publications - Denilson Barbosa

2022

D. Teodorescu, J. Matalski, D. Lothian, D. Barbosa, and C. Demmans Epp. Cree corpus: a collection of nêhiyawêwin resources. In Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 6354–6364. Dublin, Ireland, May 2022. Association for Computational Linguistics. URL: https://aclanthology.org/2022.acl-long.440, doi:10.18653/v1/2022.acl-long.440. [Bibtex]

@inproceedings{teodorescu-etal-2022-cree,
    author = "Teodorescu, Daniela and Matalski, Josie and Lothian, Delaney and Barbosa, Denilson and Demmans Epp, Carrie",
    title = "{C}ree Corpus: A Collection of n{\^e}hiyaw{\^e}win Resources",
    booktitle = "Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
    month = "May",
    year = "2022",
    address = "Dublin, Ireland",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2022.acl-long.440",
    doi = "10.18653/v1/2022.acl-long.440",
    pages = "6354--6364",
    abstract = "Plains Cree (n{\^e}hiyaw{\^e}win) is an Indigenous language that is spoken in Canada and the USA. It is the most widely spoken dialect of Cree and a morphologically complex language that is polysynthetic, highly inflective, and agglutinative. It is an extremely low resource language, with no existing corpus that is both available and prepared for supporting the development of language technologies. To support n{\^e}hiyaw{\^e}win revitalization and preservation, we developed a corpus covering diverse genres, time periods, and texts for a variety of intended audiences. The data has been verified and cleaned; it is ready for use in developing language technologies for n{\^e}hiyaw{\^e}win. The corpus includes the corresponding English phrases or audio files where available. We demonstrate the utility of the corpus through its community use and its use to build language technologies that can provide the types of support that community members have expressed are desirable. The corpus is available for public use."
}

V. Ranganathan and D. Barbosa. Hoplop: multi-hop link prediction over knowledge graph embeddings. World Wide Web, 25(2):1037–1065, mar 2022. URL: https://doi.org/10.1007/s11280-021-00972-6, doi:10.1007/s11280-021-00972-6. [Bibtex]

@article{RanganathanB22,
    author = "Ranganathan, Varun and Barbosa, Denilson",
    title = "HOPLoP: Multi-Hop Link Prediction over Knowledge Graph Embeddings",
    year = "2022",
    publisher = "Kluwer Academic Publishers",
    address = "USA",
    volume = "25",
    number = "2",
    issn = "1386-145X",
    url = "https://doi.org/10.1007/s11280-021-00972-6",
    doi = "10.1007/s11280-021-00972-6",
    abstract = "Large-scale Knowledge Graphs (KGs) support applications such as Web search and personal assistants and provide training data for numerous Natural Language Processing tasks. Nevertheless, building KGs with high accuracy and domain coverage remains difficult, and neither manual nor automatic efforts are up to par. Link Prediction (LP) is one of many tasks aimed at addressing this problem. Its goal is to find missing links between entities in the KG based on structural by exploiting regularities in the graph structure. Recent years have seen two approaches emerge: using KG embeddings, and modelling complex relations by exploiting correlations between individual links and longer paths connecting the same pair of entities. For the latter, state-of-the-art methods traverse the KG itself and are hampered both by incompleteness and skewed degree distributions found in most KGs, resulting in some entities being overly represented in the training set leading to poor generalization. We present HOPLoP: an efficient and effective multi-hop LP meta method that performs the equivalent to path traversals on the KG embedding space instead of the KG itself, marrying both ideas. We show how to train and tune our method with different underlying KG embeddings, and report on experiments on many benchmarks, showing both that HOPLoP improves each LP method on its own and that it consistently outperforms the previous state-of-the-art by a good margin. Finally, we describe a way to interpret paths generated by HOPLoP when used with TransE.",
    journal = "World Wide Web",
    month = "mar",
    pages = "1037–1065",
    numpages = "29",
    keywords = "Link Prediction, Knowledge Graph Embeddings, Multi-hop reasoning"
}

T. Firoozi, O. Bulut, C. Demmans Epp, A. N. Abadi, and D. Barbosa. He effect of fine-tuned word embedding techniques on the accuracy of automated essay scoring systems using neural networks. Journal of Applied Testing Technology, 2022. In press. [Bibtex]

@article{JATT2022,
    author = "Firoozi, T. and Bulut, O. and Demmans Epp, C. and Abadi, A. N. and Barbosa, D.",
    title = "he effect of fine-tuned word embedding techniques on the accuracy of automated essay scoring systems using neural networks",
    note = "In press",
    journal = "Journal of Applied Testing Technology",
    year = "2022"
}

G. Rockwell, N. Hervieux, H. Zafar, K. Land, A. MacDonald, D. Barbosa, L. Frizzera, M. Ilovan, and S. Brown. Web services for voyant: lincs, voyant and nssi: lincs, voyant and nssi. In Proceedings of DIGITAL HUMANITIES 2022. Carnegie Mellon University Press, 2022. [Bibtex]

@inproceedings{DH2022,
    author = "Rockwell, Geoffrey and Hervieux, Natalie and Zafar, Huma and Land, Kaylin and MacDonald, Andew and Barbosa, Denilson and Frizzera, Luciano and Ilovan, Mihaela and Brown, Susan",
    title = "Web Services for Voyant: LINCS, Voyant and NSSI: LINCS, Voyant and NSSI",
    booktitle = "Proceedings of DIGITAL HUMANITIES 2022",
    year = "2022",
    publisher = "Carnegie Mellon University Press"
}

L. M. Lefsrud, C. A. G. Gutierrez, E. Stroulia, J. Gehman, and D. Barbosa. Energy to contest? emotional and multimodal contestation of energy markets. In Proceedings of the 38th EGOS Colloquium. European Group for Organizational Studies, 2022. [Bibtex]

@inproceedings{AI4BuzEGOS2022,
    author = "Lefsrud, Lianne M. and Gutierrez, Candelario A. Gutierrez and Stroulia, Eleni and Gehman, Joel and Barbosa, Denilson",
    title = "Energy to contest? Emotional and multimodal contestation of energy markets",
    booktitle = "Proceedings of the 38th EGOS Colloquium",
    publisher = "European Group for Organizational Studies",
    year = "2022"
}

2021

A. Rossi, D. Barbosa, D. Firmani, A. Matinata, and P. Merialdo. Knowledge graph embedding for link prediction: a comparative analysis. ACM Trans. Knowl. Discov. Data, jan 2021. URL: https://doi.org/10.1145/3424672, doi:10.1145/3424672. [Bibtex]

@article{RossiBFMM21,
    author = "Rossi, Andrea and Barbosa, Denilson and Firmani, Donatella and Matinata, Antonio and Merialdo, Paolo",
    title = "Knowledge Graph Embedding for Link Prediction: A Comparative Analysis",
    year = "2021",
    publisher = "Association for Computing Machinery",
    address = "New York, NY, USA",
    volume = "15",
    number = "2",
    issn = "1556-4681",
    url = "https://doi.org/10.1145/3424672",
    doi = "10.1145/3424672",
    abstract = "Knowledge Graphs (KGs) have found many applications in industrial and in academic settings, which in turn, have motivated considerable research efforts towards large-scale information extraction from a variety of sources. Despite such efforts, it is well known that even the largest KGs suffer from incompleteness; Link Prediction (LP) techniques address this issue by identifying missing facts among entities already in the KG. Among the recent LP techniques, those based on KG embeddings have achieved very promising performance in some benchmarks. Despite the fast-growing literature on the subject, insufficient attention has been paid to the effect of the design choices in those methods. Moreover, the standard practice in this area is to report accuracy by aggregating over a large number of test facts in which some entities are vastly more represented than others; this allows LP methods to exhibit good results by just attending to structural properties that include such entities, while ignoring the remaining majority of the KG. This analysis provides a comprehensive comparison of embedding-based LP methods, extending the dimensions of analysis beyond what is commonly available in the literature. We experimentally compare the effectiveness and efficiency of 18 state-of-the-art methods, consider a rule-based baseline, and report detailed analysis over the most popular benchmarks in the literature.",
    journal = "ACM Trans. Knowl. Discov. Data",
    month = "jan",
    articleno = "14",
    numpages = "49",
    keywords = "knowledge graph embeddings, link prediction, Knowledge graphs, comparative analysis"
}

P. Yao and D. Barbosa. Typing errors in factual knowledge graphs: severity and possible ways out. In J. Leskovec, M. Grobelnik, M. Najork, J. Tang, and L. Zia, editors, WWW '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021, 3305–3313. ACM / IW3C2, 2021. URL: https://doi.org/10.1145/3442381.3449977, doi:10.1145/3442381.3449977. [Bibtex]

@inproceedings{YaoB21,
    author = "Yao, Peiran and Barbosa, Denilson",
    editor = "Leskovec, Jure and Grobelnik, Marko and Najork, Marc and Tang, Jie and Zia, Leila",
    title = "Typing Errors in Factual Knowledge Graphs: Severity and Possible Ways Out",
    booktitle = "{WWW} '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021",
    pages = "3305--3313",
    publisher = "{ACM} / {IW3C2}",
    year = "2021",
    url = "https://doi.org/10.1145/3442381.3449977",
    doi = "10.1145/3442381.3449977",
    timestamp = "Mon, 07 Jun 2021 14:20:06 +0200",
    biburl = "https://dblp.org/rec/conf/www/YaoB21.bib",
    bibsource = "dblp computer science bibliography, https://dblp.org"
}

T. Renwick and D. Barbosa. Detection and identification of obfuscated obscene language with character level transformers. In Proceedings of the 34th Canadian Conference on Artificial Intelligence, Canadian AI 2021, 8 pp. 2021. [Bibtex]

@inproceedings{RenwickBarbosa21,
    author = "Renwick, Tobias and Barbosa, Denilson",
    title = "Detection and Identification of Obfuscated Obscene Language with Character Level Transformers",
    booktitle = "Proceedings of the 34th Canadian Conference on Artificial Intelligence, Canadian {AI} 2021",
    pages = "8 pp",
    year = "2021"
}

C. A. G. Gutierrez, A. M. Whittaker, K. M. Patenio, J. Gehman, L. M. Lefsrud, D. Barbosa, and E. Stroulia. Analyzing and visualizing twitter conversations. In CASCON '21: Proceedings of the 31st Annual International Conference on Computer Science and Software Engineering, Toronto, Ontario, Canada, November 22 - 25, 2021, 4–13. ACM, 2021. URL: https://dl.acm.org/doi/10.5555/3507788.3507791, doi:10.5555/3507788.3507791. [Bibtex]

@inproceedings{GutierrezWPGLBS21,
    author = "Gutierrez, Candelario A. Gutierrez and Whittaker, Andrea M. and Patenio, Katherine Mae and Gehman, Joel and Lefsrud, Lianne M. and Barbosa, Denilson and Stroulia, Eleni",
    title = "Analyzing and visualizing Twitter conversations",
    booktitle = "{CASCON} '21: Proceedings of the 31st Annual International Conference on Computer Science and Software Engineering, Toronto, Ontario, Canada, November 22 - 25, 2021",
    pages = "4--13",
    publisher = "{ACM}",
    year = "2021",
    url = "https://dl.acm.org/doi/10.5555/3507788.3507791",
    doi = "10.5555/3507788.3507791"
}

2020

E. Macdonald and D. Barbosa. Neural relation extraction on wikipedia tables for augmenting knowledge graphs. In Proceedings of the 29th ACM International Conference on Information & Knowledge Management, 2133–2136. New York, NY, USA, 2020. Association for Computing Machinery. URL: https://doi.org/10.1145/3340531.3412164. [Bibtex]

@inproceedings{cikm2020,
    author = "Macdonald, Erin and Barbosa, Denilson",
    title = "Neural Relation Extraction on Wikipedia Tables for Augmenting Knowledge Graphs",
    year = "2020",
    isbn = "9781450368599",
    publisher = "Association for Computing Machinery",
    address = "New York, NY, USA",
    url = "https://doi.org/10.1145/3340531.3412164",
    abstract = "Knowledge Graph Augmentation is the task of adding missing facts to an incomplete knowledge graph to improve its effectiveness in applications such as web search and question answering. State-of-the-art methods rely on information extraction from running text, leaving rich sources of facts such as tables behind. We help close this gap with a neural method that uses contextual information surrounding a table in a Wikipedia article to extract relations between entities appearing in the same row of a table or between the entity of said article and entities appearing in the table. We trained and tested our method on a much larger dataset compared to previous work which we have made public and observed experimentally that our method is very promising for the task.",
    booktitle = "Proceedings of the 29th ACM International Conference on Information {\&} Knowledge Management",
    pages = "2133–2136",
    numpages = "4"
}

V. Ranganathan, S. Suresh, Y. Mathur, N. Subramanyam, and D. Barbosa. Grcluster: a score function to model hierarchy in knowledge graph embeddings. In Chih-Cheng Hung, T. Cerný, D. Shin, and A. Bechini, editors, SAC '20: The 35th ACM/SIGAPP Symposium on Applied Computing, online event, [Brno, Czech Republic], March 30 - April 3, 2020, 964–971. ACM, 2020. URL: https://doi.org/10.1145/3341105.3373978, doi:10.1145/3341105.3373978. [Bibtex]

@inproceedings{sac_RanganathanSMSB20,
    author = "Ranganathan, Varun and Suresh, Siddharth and Mathur, Yash and Subramanyam, Natarajan and Barbosa, Denilson",
    editor = "Hung, Chih{-}Cheng and Cern{\'{y}}, Tom{\'{a}}s and Shin, Dongwan and Bechini, Alessio",
    title = "GrCluster: a score function to model hierarchy in knowledge graph embeddings",
    booktitle = "{SAC} '20: The 35th {ACM/SIGAPP} Symposium on Applied Computing, online event, [Brno, Czech Republic], March 30 - April 3, 2020",
    pages = "964--971",
    publisher = "{ACM}",
    year = "2020",
    url = "https://doi.org/10.1145/3341105.3373978",
    doi = "10.1145/3341105.3373978",
    timestamp = "Thu, 02 Apr 2020 17:08:04 +0200",
    biburl = "https://dblp.org/rec/conf/sac/RanganathanSMSB20.bib",
    bibsource = "dblp computer science bibliography, https://dblp.org"
}

C. Pang, A. Hindle, and D. Barbosa. Understanding devops education with grounded theory. In Proceedings of the 41st International Conference on Software Engineering: Software Engineering Education and Training. 2020. URL: https://2020.icse-conferences.org/details/icse-2020-Software-Engineering-Education-and-Training/13/Understanding-DevOps-Education-with-Grounded-Theory. [Bibtex]

@inproceedings{icse2020,
    author = "Pang, Candy and Hindle, Abram and Barbosa, Denilson",
    title = "Understanding DevOps Education with Grounded Theory",
    booktitle = "Proceedings of the 41st International Conference on Software Engineering: Software Engineering Education and Training",
    year = "2020",
    URL = "https://2020.icse-conferences.org/details/icse-2020-Software-Engineering-Education-and-Training/13/Understanding-DevOps-Education-with-Grounded-Theory"
}

A. Rossi, D. Firmani, A. Matinata, P. Merialdo, and D. Barbosa. Knowledge graph embedding for link prediction: A comparative analysis. CoRR, 2020. URL: https://arxiv.org/abs/2002.00819, arXiv:2002.00819. [Bibtex]

@article{corr_abs-2002-00819,
    author = "Rossi, Andrea and Firmani, Donatella and Matinata, Antonio and Merialdo, Paolo and Barbosa, Denilson",
    title = "Knowledge Graph Embedding for Link Prediction: {A} Comparative Analysis",
    journal = "CoRR",
    volume = "abs/2002.00819",
    year = "2020",
    url = "https://arxiv.org/abs/2002.00819",
    archivePrefix = "arXiv",
    eprint = "2002.00819",
    timestamp = "Mon, 10 Feb 2020 15:12:57 +0100",
    biburl = "https://dblp.org/rec/journals/corr/abs-2002-00819.bib",
    bibsource = "dblp computer science bibliography, https://dblp.org"
}

2019

F. Mesquita, M. Cannaviccio, J. Schmidek, P. Mirza, and D. Barbosa. KnowledgeNet: a benchmark dataset for knowledge base population. In Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP), 749–758. Hong Kong, China, November 2019. Association for Computational Linguistics. URL: https://www.aclweb.org/anthology/D19-1069, doi:10.18653/v1/D19-1069. [Bibtex]

@inproceedings{emnlp2019_KnowledgeNet,
    author = "Mesquita, Filipe and Cannaviccio, Matteo and Schmidek, Jordan and Mirza, Paramita and Barbosa, Denilson",
    title = "{K}nowledge{N}et: A Benchmark Dataset for Knowledge Base Population",
    booktitle = "Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)",
    month = "November",
    year = "2019",
    address = "Hong Kong, China",
    publisher = "Association for Computational Linguistics",
    url = "https://www.aclweb.org/anthology/D19-1069",
    doi = "10.18653/v1/D19-1069",
    pages = "749--758",
    abstract = "KnowledgeNet is a benchmark dataset for the task of automatically populating a knowledge base (Wikidata) with facts expressed in natural language text on the web. KnowledgeNet provides text exhaustively annotated with facts, thus enabling the holistic end-to-end evaluation of knowledge base population systems as a whole, unlike previous benchmarks that are more suitable for the evaluation of individual subcomponents (e.g., entity linking, relation extraction). We discuss five baseline approaches, where the best approach achieves an F1 score of 0.50, significantly outperforming a traditional approach by 79{\%} (0.28). However, our best baseline is far from reaching human performance (0.82), indicating our dataset is challenging. The KnowledgeNet dataset and baselines are available at https://github.com/diffbot/knowledge-net"
}

P. Xu and D. Barbosa. Connecting language and knowledge with heterogeneous representations for neural relation extraction. In Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers), 3201–3206. Minneapolis, Minnesota, June 2019. Association for Computational Linguistics. URL: https://www.aclweb.org/anthology/N19-1323. [Bibtex]

@inproceedings{xu-barbosa-2019-connecting,
    author = "Xu, Peng and Barbosa, Denilson",
    title = "Connecting Language and Knowledge with Heterogeneous Representations for Neural Relation Extraction",
    booktitle = "Proceedings of the 2019 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers)",
    month = "June",
    year = "2019",
    address = "Minneapolis, Minnesota",
    publisher = "Association for Computational Linguistics",
    url = "https://www.aclweb.org/anthology/N19-1323",
    pages = "3201--3206",
    abstract = "Knowledge Bases (KBs) require constant updating to reflect changes to the world they represent. For general purpose KBs, this is often done through Relation Extraction (RE), the task of predicting KB relations expressed in text mentioning entities known to the KB. One way to improve RE is to use KB Embeddings (KBE) for link prediction. However, despite clear connections between RE and KBE, little has been done toward properly unifying these models systematically. We help close the gap with a framework that unifies the learning of RE and KBE models leading to significant improvements over the state-of-the-art in RE. The code is available at https://github.com/billy-inn/HRERE."
}

D. Caminhas, D. Cones, N. Hervieux, and D. Barbosa. Detecting and correcting typing errors in dbpedia. In D. Firmani, V. Crescenzi, A. D. Angelis, X. L. Dong, M. Mazzei, P. Merialdo, and D. Srivastava, editors, Proceedings of the 1st International Workshop on Challenges and Experiences from Data Integration to Knowledge Graphs co-located with the 25th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining (KDD 2019), Anchorage, Alaska, August 5, 2019, volume 2512 of CEUR Workshop Proceedings. CEUR-WS.org, 2019. URL: http://ceur-ws.org/Vol-2512/paper6.pdf. [Bibtex]

@inproceedings{kdd_CaminhasCHB19,
    author = "Caminhas, Daniel and Cones, Daniel and Hervieux, Natalie and Barbosa, Denilson",
    editor = "Firmani, Donatella and Crescenzi, Valter and Angelis, Andrea De and Dong, Xin Luna and Mazzei, Maurizio and Merialdo, Paolo and Srivastava, Divesh",
    title = "Detecting and Correcting Typing Errors in DBpedia",
    booktitle = "Proceedings of the 1st International Workshop on Challenges and Experiences from Data Integration to Knowledge Graphs co-located with the 25th {ACM} {SIGKDD} International Conference on Knowledge Discovery {\&} Data Mining {(KDD} 2019), Anchorage, Alaska, August 5, 2019",
    series = "{CEUR} Workshop Proceedings",
    volume = "2512",
    publisher = "CEUR-WS.org",
    year = "2019",
    url = "http://ceur-ws.org/Vol-2512/paper6.pdf",
    timestamp = "Wed, 12 Feb 2020 16:44:16 +0100",
    biburl = "https://dblp.org/rec/conf/kdd/CaminhasCHB19.bib",
    bibsource = "dblp computer science bibliography, https://dblp.org"
}

P. Xu and D. Barbosa. Connecting language and knowledge with heterogeneous representations for neural relation extraction (preprint). CoRR, 2019. URL: http://arxiv.org/abs/1903.10126, arXiv:1903.10126. [Bibtex]

@article{Corr_abs-1903-10126,
    author = "Xu, Peng and Barbosa, Denilson",
    title = "Connecting Language and Knowledge with Heterogeneous Representations for Neural Relation Extraction (preprint)",
    journal = "CoRR",
    volume = "abs/1903.10126",
    year = "2019",
    url = "http://arxiv.org/abs/1903.10126",
    archivePrefix = "arXiv",
    eprint = "1903.10126",
    timestamp = "Mon, 01 Apr 2019 14:07:37 +0200",
    biburl = "https://dblp.org/rec/bib/journals/corr/abs-1903-10126",
    bibsource = "dblp computer science bibliography, https://dblp.org"
}

2018

M. Cannaviccio, D. Barbosa, and P. Merialdo. Towards annotating relational data on the web with language models. In Proceedings of The Web Conference 2018, 1307–1316. 2018. doi:10.1145/3178876.3186029. [Bibtex] [PDF]

@inproceedings{Cannaviccio_et_al_2018,
    author = "Cannaviccio, Matteo and Barbosa, Denilson and Merialdo, Paolo",
    title = "Towards Annotating Relational Data on the Web with Language Models",
    booktitle = "Proceedings of The Web Conference 2018",
    pages = "1307--1316",
    year = "2018",
    doi = "10.1145/3178876.3186029",
    PDF = "http://webdocs.cs.ualberta.ca/~denilson/files/publications/CannaviccioBM_WWW2018.pdf"
}

P. Xu and D. Barbosa. Neural fine-grained entity type classification with hierarchy-aware loss. In Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long Papers), 16–25. New Orleans, Louisiana, June 2018. Association for Computational Linguistics. URL: https://www.aclweb.org/anthology/papers/N/N18/N18-1002/, doi:10.18653/v1/N18-1002. [Bibtex] [PDF]

@inproceedings{xu-barbosa-2018-neural,
    author = "Xu, Peng and Barbosa, Denilson",
    title = "Neural Fine-Grained Entity Type Classification with Hierarchy-Aware Loss",
    booktitle = "Proceedings of the 2018 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long Papers)",
    month = "June",
    year = "2018",
    address = "New Orleans, Louisiana",
    publisher = "Association for Computational Linguistics",
    pdf = "https://www.aclweb.org/anthology/N18-1002",
    url = "https://www.aclweb.org/anthology/papers/N/N18/N18-1002/",
    doi = "10.18653/v1/N18-1002",
    pages = "16--25",
    abstract = "The task of Fine-grained Entity Type Classification (FETC) consists of assigning types from a hierarchy to entity mentions in text. Existing methods rely on distant supervision and are thus susceptible to noisy labels that can be out-of-context or overly-specific for the training sentence. Previous methods that attempt to address these issues do so with heuristics or with the help of hand-crafted features. Instead, we propose an end-to-end solution with a neural network model that uses a variant of cross-entropy loss function to handle out-of-context labels, and hierarchical loss normalization to cope with overly-specific ones. Also, previous work solve FETC a multi-label classification followed by ad-hoc post-processing. In contrast, our solution is more elegant: we use public word embeddings to train a single-label that jointly learns representations for entity mentions and their context. We show experimentally that our approach is robust against noise and consistently outperforms the state-of-the-art on established benchmarks for the task."
}

Z. Guo and D. Barbosa. Robust named entity disambiguation with random walks. Semantic Web, 9(4):459–479, 2018. doi:10.3233/SW-170273. [Bibtex] [PDF]

@article{Guo_Barbosa_2018,
    author = "Guo, Zhaochen and Barbosa, Denilson",
    title = "Robust named entity disambiguation with random walks",
    journal = "Semantic Web",
    volume = "9",
    number = "4",
    pages = "459--479",
    year = "2018",
    doi = "10.3233/SW-170273",
    pdf = "http://webdocs.cs.ualberta.ca/~denilson/files/publications/swj1511.pdf"
}

M. Cannaviccio, L. Ariemma, D. Barbosa, and P. Merialdo. Leveraging wikipedia table schemas for knowledge graph augmentation. In Proceedings of the 21st International Workshop on Web and Databases, Houston, TX, USA, June 10th, 2018, 5:1–5:6. ACM, 2018. URL: http://doi.acm.org/10.1145/3201463.3201468. [Bibtex]

@inproceedings{CannaviccioABM_WebDB2018,
    author = "Cannaviccio, Matteo and Ariemma, Lorenzo and Barbosa, Denilson and Merialdo, Paolo",
    title = "Leveraging Wikipedia Table Schemas for Knowledge Graph Augmentation",
    booktitle = "Proceedings of the 21st International Workshop on Web and Databases, Houston, TX, USA, June 10th, 2018",
    pages = "5:1-5:6",
    publisher = "{ACM}",
    year = "2018",
    url = "http://doi.acm.org/10.1145/3201463.3201468"
}

P. Xu and D. Barbosa. Matching resumes to job descriptions with stacked models. In Advances in Artificial Intelligence - 31st Canadian Conference on Artificial Intelligence, Canadian AI 2018, Toronto, ON, Canada, May 8-11, 2018, Proceedings, 304–309. 2018. doi:10.1007/978-3-319-89656-4_31. [Bibtex]

@inproceedings{XuBarbosa_CanAI_2018,
    author = "Xu, Peng and Barbosa, Denilson",
    title = "Matching Resumes to Job Descriptions with Stacked Models",
    booktitle = "Advances in Artificial Intelligence - 31st Canadian Conference on Artificial Intelligence, Canadian {AI} 2018, Toronto, ON, Canada, May 8-11, 2018, Proceedings",
    pages = "304--309",
    year = "2018",
    doi = "10.1007/978-3-319-89656-4_31"
}

P. Xu and D. Barbosa. Investigations on knowledge base embedding for relation prediction and extraction. CoRR, 2018. URL: http://arxiv.org/abs/1802.02114, arXiv:1802.02114. [Bibtex]

@article{Corr_abs-1802-02114,
    author = "Xu, Peng and Barbosa, Denilson",
    title = "Investigations on Knowledge Base Embedding for Relation Prediction and Extraction",
    journal = "CoRR",
    volume = "abs/1802.02114",
    year = "2018",
    url = "http://arxiv.org/abs/1802.02114",
    archivePrefix = "arXiv",
    eprint = "1802.02114"
}

P. Xu and D. Barbosa. Neural fine-grained entity type classification with hierarchy-aware loss (preprint). CoRR, 2018. URL: http://arxiv.org/abs/1803.03378, arXiv:1803.03378. [Bibtex]

@article{Corr_abs-1803-03378,
    author = "Xu, Peng and Barbosa, Denilson",
    title = "Neural Fine-Grained Entity Type Classification with Hierarchy-Aware Loss (Preprint)",
    journal = "CoRR",
    volume = "abs/1803.03378",
    year = "2018",
    url = "http://arxiv.org/abs/1803.03378",
    archivePrefix = "arXiv",
    eprint = "1803.03378"
}

2016

M. Yahya, D. Barbosa, K. Berberich, Q. Wang, and G. Weikum. Relationship queries on extended knowledge graphs. In Proceedings of the Ninth ACM International Conference on Web Search and Data Mining, San Francisco, CA, USA, February 22-25, 2016, 605–614. ACM, 2016. doi:10.1145/2835776.2835795. [Bibtex] [PDF]

@inproceedings{Yahya_etal_WSDM2016,
    author = "Yahya, Mohamed and Barbosa, Denilson and Berberich, Klaus and Wang, Qiuyue and Weikum, Gerhard",
    title = "Relationship Queries on Extended Knowledge Graphs",
    booktitle = "Proceedings of the Ninth {ACM} International Conference on Web Search and Data Mining, San Francisco, CA, USA, February 22-25, 2016",
    pages = "605--614",
    publisher = "{ACM}",
    year = "2016",
    doi = "10.1145/2835776.2835795",
    timestamp = "Mon, 08 Feb 2016 15:38:27 +0100",
    biburl = "http://dblp.uni-trier.de/rec/bib/conf/wsdm/YahyaBBWW16",
    bibsource = "dblp computer science bibliography, http://dblp.org",
    pdf = "http://webdocs.cs.ualberta.ca/~denilson/files/publications/p605-yahya.pdf"
}

M. Cannaviccio, D. Barbosa, and P. Merialdo. Accurate fact harvesting from natural language text in wikipedia with lector. In Proceedings of the 19th International Workshop on Web and Databases, San Francisco, CA, USA, June 26, 2016, 9. ACM, 2016. doi:10.1145/2932194.2932203. [Bibtex]

@inproceedings{CannaviccioBM_WebDB2016,
    author = "Cannaviccio, Matteo and Barbosa, Denilson and Merialdo, Paolo",
    title = "Accurate fact harvesting from natural language text in wikipedia with Lector",
    booktitle = "Proceedings of the 19th International Workshop on Web and Databases, San Francisco, CA, USA, June 26, 2016",
    pages = "9",
    publisher = "{ACM}",
    year = "2016",
    doi = "10.1145/2932194.2932203",
    timestamp = "Mon, 20 Jun 2016 08:34:57 +0200",
    biburl = "http://dblp.uni-trier.de/rec/bib/conf/webdb/CannaviccioBM16",
    bibsource = "dblp computer science bibliography, http://dblp.org"
}

I. Polato, D. Barbosa, A. Hindle, and F. Kon. Hadoop energy consumption reduction with hybrid HDFS. In S. Ossowski, editor, Proceedings of the 31st Annual ACM Symposium on Applied Computing, Pisa, Italy, April 4-8, 2016, 406–411. ACM, 2016. doi:10.1145/2851613.2851623. [Bibtex]

@inproceedings{PolatoBHK_SAC2016,
    author = "Polato, Ivanilton and Barbosa, Denilson and Hindle, Abram and Kon, Fabio",
    editor = "Ossowski, Sascha",
    title = "Hadoop energy consumption reduction with hybrid {HDFS}",
    booktitle = "Proceedings of the 31st Annual {ACM} Symposium on Applied Computing, Pisa, Italy, April 4-8, 2016",
    pages = "406--411",
    publisher = "{ACM}",
    year = "2016",
    doi = "10.1145/2851613.2851623",
    timestamp = "Mon, 06 Jun 2016 18:51:39 +0200",
    biburl = "http://dblp.uni-trier.de/rec/bib/conf/sac/PolatoBHK16",
    bibsource = "dblp computer science bibliography, http://dblp.org"
}

2015

H. Sepehri-Rad and D. Barbosa. Identifying controversial wikipedia articles using editor collaboration networks. ACM TIST, 6(1):5, 2015. doi:10.1145/2630075. [Bibtex]

@article{Rad_Barbosa_TIST2015,
    Author = "Sepehri-Rad, Hoda and Barbosa, Denilson",
    Doi = "10.1145/2630075",
    Journal = "ACM TIST",
    Number = "1",
    Pages = "5",
    Timestamp = "Wed, 15 Apr 2015 13:00:07 +0200",
    Title = "Identifying Controversial Wikipedia Articles Using Editor Collaboration Networks",
    Volume = "6",
    Year = "2015"
}

D. Barbosa, H. Wang, and C. Yu. Inferencing in information extraction: techniques and applications. In IEEE 31st International Conference on Data Engineering. IEEE, 2015. [Bibtex] [PDF]

@inproceedings{Barbosa_etal_ICDE2015,
    Author = "Barbosa, Denilson and Wang, Haixun and Yu, Cong",
    Booktitle = "IEEE 31st International Conference on Data Engineering",
    Pdf = "http://webdocs.cs.ualberta.ca/~denilson/files/publications/tutorial_icde15_inferenceIE.pdf",
    Publisher = "IEEE",
    Title = "Inferencing in Information Extraction: Techniques and Applications",
    Year = "2015"
}

I. Polato, D. Barbosa, A. Hindle, and F. Kon. Hybrid HDFS: decreasing energy consumption and speeding up hadoop using ssds. PeerJ PrePrints, 3:e1320, 2015. doi:10.7287/peerj.preprints.1320v1. [Bibtex]

@article{PolatoBHK_PeerJ2015,
    author = "Polato, Ivanilton and Barbosa, Denilson and Hindle, Abram and Kon, Fabio",
    title = "Hybrid {HDFS:} decreasing energy consumption and speeding up Hadoop using SSDs",
    journal = "PeerJ PrePrints",
    volume = "3",
    pages = "e1320",
    year = "2015",
    doi = "10.7287/peerj.preprints.1320v1",
    timestamp = "Wed, 02 Sep 2015 19:49:32 +0200",
    biburl = "http://dblp.uni-trier.de/rec/bib/journals/peerjpre/PolatoBHK15",
    bibsource = "dblp computer science bibliography, http://dblp.org"
}

I. Polato, D. Barbosa, A. Hindle, and F. Kon. Hadoop branching: architectural impacts on energy and performance. In Sixth International Green and Sustainable Computing Conference, IGSC 2015, Las Vegas, NV, USA, December 14-16, 2015, 1–4. IEEE Computer Society, 2015. doi:10.1109/IGCC.2015.7393709. [Bibtex]

@inproceedings{PolatoBHK_Green2015,
    author = "Polato, Ivanilton and Barbosa, Denilson and Hindle, Abram and Kon, Fabio",
    title = "Hadoop branching: Architectural impacts on energy and performance",
    booktitle = "Sixth International Green and Sustainable Computing Conference, {IGSC} 2015, Las Vegas, NV, USA, December 14-16, 2015",
    pages = "1--4",
    publisher = "{IEEE} Computer Society",
    year = "2015",
    doi = "10.1109/IGCC.2015.7393709",
    timestamp = "Fri, 29 Apr 2016 12:25:57 +0200",
    biburl = "http://dblp.uni-trier.de/rec/bib/conf/green/PolatoBHK15",
    bibsource = "dblp computer science bibliography, http://dblp.org"
}

Z. Guo and D. Barbosa. Entity recognition and linking on tweets with random walks. In Proceedings of the the 5th Workshop on Making Sense of Microposts co-located with the 24th International World Wide Web Conference, Florence, Italy, May 18th, 2015., 57–58. 2015. URL: http://dblp.uni-trier.de/rec/bibtex/conf/msm/GuoB15. [Bibtex] [PDF]

@inproceedings{Guo_Barbosa_MSM2015,
    Author = "Guo, Zhaochen and Barbosa, Denilson",
    Booktitle = "Proceedings of the the 5th Workshop on Making Sense of Microposts co-located with the 24th International World Wide Web Conference, Florence, Italy, May 18th, 2015.",
    Pages = "57--58",
    Pdf = "http://ceur-ws.org/Vol-1395/paper_21.pdf",
    Title = "Entity Recognition and Linking on Tweets with Random Walks",
    Url = "http://dblp.uni-trier.de/rec/bibtex/conf/msm/GuoB15",
    Year = "2015"
}

D. Barbosa and E. E. Milios, editors. Advances in Artificial Intelligence - 28th Canadian Conference on Artificial Intelligence, Canadian AI 2015, Halifax, Nova Scotia, Canada, June 2-5, 2015, Proceedings, volume 9091 of Lecture Notes in Computer Science, Springer, 2015. doi:10.1007/978-3-319-18356-5. [Bibtex]

@proceedings{Proc_Canadian_AI_2015,
    Editor = "Barbosa, Denilson and Milios, Evangelos E.",
    Bibsource = "dblp computer science bibliography, http://dblp.org",
    Doi = "10.1007/978-3-319-18356-5",
    Isbn = "978-3-319-18355-8",
    Publisher = "Springer",
    Series = "Lecture Notes in Computer Science",
    Timestamp = "Wed, 29 Apr 2015 14:24:22 +0200",
    Title = "Advances in Artificial Intelligence - 28th Canadian Conference on Artificial Intelligence, Canadian {AI} 2015, Halifax, Nova Scotia, Canada, June 2-5, 2015, Proceedings",
    Volume = "9091",
    Year = "2015"
}

2014

Z. Guo and D. Barbosa. Robust entity linking via random walks. In Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, CIKM 2014, Shanghai, China, November 3-7, 2014, 499–508. ACM, 2014. doi:10.1145/2661829.2661887. [Bibtex]

@inproceedings{Guo_Barbosa_CIKM2014,
    author = "Guo, Zhaochen and Barbosa, Denilson",
    title = "Robust Entity Linking via Random Walks",
    booktitle = "Proceedings of the 23rd {ACM} International Conference on Conference on Information and Knowledge Management, {CIKM} 2014, Shanghai, China, November 3-7, 2014",
    pages = "499--508",
    publisher = "{ACM}",
    year = "2014",
    doi = "10.1145/2661829.2661887",
    timestamp = "Fri, 07 Nov 2014 12:38:01 +0100",
    biburl = "http://dblp.uni-trier.de/rec/bib/conf/cikm/GuoB14",
    bibsource = "dblp computer science bibliography, http://dblp.org"
}

Z. Guo and D. Barbosa. Entity linking with a unified semantic representation. In 23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume, 1305–1310. ACM, 2014. URL: http://dl.acm.org/citation.cfm?id=2579705. [Bibtex]

@inproceedings{Guo_Barbosa_WWW2014,
    Author = "Guo, Zhaochen and Barbosa, Denilson",
    Booktitle = "23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume",
    Pages = "1305-1310",
    Publisher = "ACM",
    Title = "Entity linking with a unified semantic representation",
    Url = "http://dl.acm.org/citation.cfm?id=2579705",
    Year = "2014"
}

Y. A. Sekhavat, F. di Paolo, D. Barbosa, and P. Merialdo. Knowledge base augmentation using tabular data. In 7th Workshop on Linked Data on the Web. CEUR-WS.org, 2014. URL: http://ceur-ws.org/Vol-1184/. [Bibtex] [PDF]

@inproceedings{Sekhavat_etal_LDOW2014,
    Author = "Sekhavat, Yoones A. and di Paolo, Francesco and Barbosa, Denilson and Merialdo, Paolo",
    Booktitle = "7th Workshop on Linked Data on the Web",
    Pdf = "http://ceur-ws.org/Vol-1184/ldow2014_paper_02.pdf",
    Publisher = "CEUR-WS.org",
    Title = "Knowledge Base Augmentation using Tabular Data",
    Url = "http://ceur-ws.org/Vol-1184/",
    Year = "2014"
}

J. Schmidek and D. Barbosa. Improving open relation extraction via sentence re-structuring. In N. C. (Conference Chair), K. Choukri, T. Declerck, H. Loftsson, B. Maegaard, J. Mariani, A. Moreno, J. Odijk, and S. Piperidis, editors, Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14). Reykjavik, Iceland, 2014. European Language Resources Association (ELRA). URL: http://www.lrec-conf.org/proceedings/lrec2014/summaries/1038.html. [Bibtex] [PDF]

@inproceedings{Schmidek_Barbosa_LREC2014,
    Author = "Schmidek, Jordan and Barbosa, Denilson",
    Editor = "Chair), Nicoletta Calzolari (Conference and Choukri, Khalid and Declerck, Thierry and Loftsson, Hrafn and Maegaard, Bente and Mariani, Joseph and Moreno, Asuncion and Odijk, Jan and Piperidis, Stelios",
    Address = "Reykjavik, Iceland",
    Booktitle = "Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14)",
    Isbn = "978-2-9517408-8-4",
    Pdf = "http://www.lrec-conf.org/proceedings/lrec2014/pdf/1038_Paper.pdf",
    Publisher = "European Language Resources Association (ELRA)",
    Title = "Improving Open Relation Extraction via Sentence Re-Structuring",
    Url = "http://www.lrec-conf.org/proceedings/lrec2014/summaries/1038.html",
    Year = "2014"
}

B. Neuenschwander, A. C. M. Pereira, W. M. Jr., and D. Barbosa. Sentiment analysis for streams of web data: A case study of brazilian financial markets. In Proceedings of the 20th Brazilian Symposium on Multimedia and the Web, WebMedia 2014, João Pessoa, Brazil, November 18-21, 2014, 167–170. ACM, 2014. doi:10.1145/2664551.2664579. [Bibtex]

@inproceedings{Neuenschwander_etal_WebMedia2014,
    author = "Neuenschwander, Bruna and Pereira, Adriano C{\'{e}}sar Machado and Jr., Wagner Meira and Barbosa, Denilson",
    title = "Sentiment Analysis for Streams of Web Data: {A} Case Study of Brazilian Financial Markets",
    booktitle = "Proceedings of the 20th Brazilian Symposium on Multimedia and the Web, WebMedia 2014, Jo{\~{a}}o Pessoa, Brazil, November 18-21, 2014",
    pages = "167--170",
    year = "2014",
    publisher = "ACM",
    doi = "10.1145/2664551.2664579"
}

J. Fagnan, O. R. Zaiane, and D. Barbosa. Using triads to identify local community structure in social networks. In 2014 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, ASONAM 2014, Beijing, China, August 17-20, 2014, 108–112. 2014. doi:10.1109/ASONAM.2014.6921568. [Bibtex]

@inproceedings{Fagnan_et_al_ASONAM14,
    Author = "Fagnan, Justin and Zaiane, Osmar R. and Barbosa, Denilson",
    Booktitle = "2014 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining, ASONAM 2014, Beijing, China, August 17-20, 2014",
    Doi = "10.1109/ASONAM.2014.6921568",
    Pages = "108--112",
    Title = "Using triads to identify local community structure in social networks",
    Year = "2014"
}

F. Mesquita, J. Schmidek, and D. Barbosa. Ldc2014t27 - benchmarks for open relation extraction. December 2014. URL: https://catalog.ldc.upenn.edu/LDC2014T27. [Bibtex]

@misc{Mesquita_et_al_LDC2014,
    Author = "Mesquita, Filipe and Schmidek, Jordan and Barbosa, Denilson",
    Date-Modified = "2015-10-01 11:52:57 +0000",
    Month = "December",
    Published = "Linguistic Data Consortium",
    Title = "LDC2014T27 - Benchmarks for Open Relation Extraction",
    Url = "https://catalog.ldc.upenn.edu/LDC2014T27",
    Year = "2014"
}

A. Makazhanov, D. Barbosa, and G. Kondrak. Extracting family relationship networks from novels. CoRR, 2014. URL: http://arxiv.org/abs/1405.0603. [Bibtex]

@article{Makazhanov_etal_CORR2014,
    Author = "Makazhanov, Aibek and Barbosa, Denilson and Kondrak, Grzegorz",
    Journal = "CoRR",
    Title = "Extracting Family Relationship Networks from Novels",
    Url = "http://arxiv.org/abs/1405.0603",
    Volume = "abs/1405.0603",
    Year = "2014"
}

2013

F. Mesquita, J. Schmidek, and D. Barbosa. Effectiveness and efficiency of open relation extraction. In Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing, 447–457. Association for Computational Linguistics, October 2013. [Bibtex] [PDF]

@inproceedings{Mesquita_etal_EMNLP2013,
    Author = "Mesquita, Filipe and Schmidek, Jordan and Barbosa, Denilson",
    Booktitle = "Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing",
    Month = "October",
    Pages = "447--457",
    Pdf = "http://www.aclweb.org/anthology/D13-1043",
    Publisher = "Association for Computational Linguistics",
    Title = "Effectiveness and Efficiency of Open Relation Extraction",
    Year = "2013"
}

H. He, D. Barbosa, and G. Kondrak. Identification of speakers in novels. In Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 1312–1320. Sofia, Bulgaria, August 2013. Association for Computational Linguistics. [Bibtex] [PDF]

@inproceedings{He_et_al_ACL2013,
    Author = "He, Hua and Barbosa, Denilson and Kondrak, Grzegorz",
    Address = "Sofia, Bulgaria",
    Booktitle = "Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
    Month = "August",
    Pages = "1312--1320",
    Pdf = "http://www.aclweb.org/anthology/P13-1129",
    Publisher = "Association for Computational Linguistics",
    Title = "Identification of Speakers in Novels",
    Year = "2013"
}

Y. Xu, M.-Y. Kim, K. Quinn, R. Goebel, and D. Barbosa. Open information extraction with tree kernels. In Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, 868–877. Atlanta, Georgia, June 2013. Association for Computational Linguistics. [Bibtex] [PDF]

@inproceedings{Xu_et_al_NAACL_HLT2_2013,
    Author = "Xu, Ying and Kim, Mi-Young and Quinn, Kevin and Goebel, Randy and Barbosa, Denilson",
    Address = "Atlanta, Georgia",
    Booktitle = "Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies",
    Month = "June",
    Pages = "868--877",
    Pdf = "http://www.aclweb.org/anthology/N13-1107",
    Publisher = "Association for Computational Linguistics",
    Title = "Open Information Extraction with Tree Kernels",
    Year = "2013"
}

M. Moraes, C. A. Heuser, V. Moreira, and D. Barbosa. Pre-Query Discovery of Domain-specific Query Forms: A Survey. IEEE Transactions on Knowledge and Data Engineering, 25(8):1830–1848, 2013. URL: http://doi.ieeecomputersociety.org/10.1109/TKDE.2012.111. [Bibtex]

@article{Moraes_etal_TKDE2013,
    Author = "Moraes, Mauricio and Heuser, Carlos A. and Moreira, Viviane and Barbosa, Denilson",
    Journal = "IEEE Transactions on Knowledge and Data Engineering",
    Number = "8",
    Pages = "1830-1848",
    Title = "{Pre-Query Discovery of Domain-specific Query Forms: A Survey}",
    Url = "http://doi.ieeecomputersociety.org/10.1109/TKDE.2012.111",
    Volume = "25",
    Year = "2013"
}

M. C. Moraes, C. A. Heuser, V. P. Moreira, and D. Barbosa. Automatically training form classifiers. In Proceedings of the 14th International Web Information Systems Engineering Conference, 441–453. 2013. URL: http://dx.doi.org/10.1007/978-3-642-41230-1_37. [Bibtex]

@inproceedings{Moraes_etal_WISE2013,
    Author = "Moraes, Mauricio C. and Heuser, Carlos A. and Moreira, Viviane Pereira and Barbosa, Denilson",
    Booktitle = "Proceedings of the 14th International Web Information Systems Engineering Conference",
    Pages = "441-453",
    Title = "Automatically Training Form Classifiers",
    Url = "http://dx.doi.org/10.1007/978-3-642-41230-1_37",
    Year = "2013"
}

R. T. Ng, P. C. Arocena, D. Barbosa, G. Carenini, L. G. Jr., S. Jou, R. A. Leung, E. Milios, R. J. Miller, J. Mylopoulos, R. A. Pottinger, F. Tompa, and E. Yu. Perspectives on Business Intelligence. Synthesis Lectures on Data Management. Morgan and Claypool Publishers, 2013. URL: http://www.morganclaypool.com/doi/abs/10.2200/S00491ED1V01Y201303DTM034. [Bibtex]

@book{BIN_book_2013,
    Author = "Ng, Raymond T. and Arocena, Patricia C. and Barbosa, Denilson and Carenini, Giuseppe and Jr., Luiz Gomes and Jou, Stephan and Leung, Rock Anthony and Milios, Evangelos and Miller, Renee J. and Mylopoulos, John and Pottinger, Rachel A. and Tompa, Frank and Yu, Eric",
    Publisher = "Morgan and Claypool Publishers",
    Series = "Synthesis Lectures on Data Management",
    Title = "Perspectives on Business Intelligence",
    Url = "http://www.morganclaypool.com/doi/abs/10.2200/S00491ED1V01Y201303DTM034",
    Year = "2013"
}

D. Barbosa, H. Wang, and C. Yu. Shallow information extraction for the knowledge web. In IEEE 29th International Conference on Data Engineering, 1264 – 1267. IEEE, 2013. URL: http://dx.doi.org/10.1109/ICDE.2013.6544920. [Bibtex] [PDF]

@inproceedings{Barbosa_etal_ICDE2013,
    Author = "Barbosa, Denilson and Wang, Haixun and Yu, Cong",
    Booktitle = "IEEE 29th International Conference on Data Engineering",
    Pages = "1264 - 1267",
    Pdf = "http://webdocs.cs.ualberta.ca/~denilson/files/publications/tutorial_icde13_shallowIE.pdf",
    Publisher = "IEEE",
    Title = "Shallow Information Extraction for the Knowledge Web",
    Url = "http://dx.doi.org/10.1109/ICDE.2013.6544920",
    Year = "2013"
}

D. Serrano, E. Stroulia, D. Barbosa, and V. Guana. SociQL: A Query Language for the SocialWeb. In E. Kranakis, editor, Advances in Network Analysis and its Applications, volume 18 of Mathematics in Industry, pages 381–406. Springer Berlin Heidelberg, 2013. URL: http://dx.doi.org/10.1007/978-3-642-30904-5_17, doi:10.1007/978-3-642-30904-5_17. [Bibtex]

@incollection{Serrano_etal_ANAA2013,
    Author = "Serrano, Diego and Stroulia, Eleni and Barbosa, Denilson and Guana, Victor",
    Editor = "Kranakis, Evangelos",
    Booktitle = "Advances in Network Analysis and its Applications",
    Doi = "10.1007/978-3-642-30904-5_17",
    Pages = "381-406",
    Publisher = "Springer Berlin Heidelberg",
    Series = "Mathematics in Industry",
    Title = "{SociQL: A Query Language for the SocialWeb}",
    Url = "http://dx.doi.org/10.1007/978-3-642-30904-5_17",
    Volume = "18",
    Year = "2013"
}

2012

Y. Merhav, F. Mesquita, D. Barbosa, W. G. Yee, and O. Frieder. Extracting information networks from the blogosphere. ACM Transactions on the Web, 6(3):11:1–11:33, 2012. doi:10.1145/2344416.2344418. [Bibtex]

@article{Merhav_etal_TWEB2012,
    Author = "Merhav, Yuval and Mesquita, Filipe and Barbosa, Denilson and Yee, Wai Gen and Frieder, Ophir",
    Acmid = "2344418",
    Address = "New York, NY, USA",
    Articleno = "11",
    Doi = "10.1145/2344416.2344418",
    Issn = "1559-1131",
    Issue_Date = "September 2012",
    Journal = "ACM Transactions on the Web",
    Keywords = "clustering, domain frequency, named entities, open information extraction, relation extraction",
    Number = "3",
    Numpages = "33",
    Pages = "11:1--11:33",
    Publisher = "ACM",
    Title = "Extracting information networks from the blogosphere",
    Volume = "6",
    Year = "2012"
}

H. Sepehri-Rad and D. Barbosa. Identifying controversial articles in wikipedia: a comparative study. In 8th International Symposium on Wikis and Open Collaboration, 7:1–7:10. ACM, 2012. URL: http://dl.acm.org/citation.cfm?doid=2462932.2462942. [Bibtex] [PDF]

@inproceedings{Rab_Barbosa_Wikisym2012,
    Author = "Sepehri-Rad, Hoda and Barbosa, Denilson",
    Booktitle = "8th International Symposium on Wikis and Open Collaboration",
    Pages = "7:1--7:10",
    Pdf = "http://www.wikisym.org/ws2012/bin/download/Main/Program/p18wikisym2012.pdf",
    Publisher = "ACM",
    Title = "Identifying controversial articles in Wikipedia: A comparative study",
    Url = "http://dl.acm.org/citation.cfm?doid=2462932.2462942",
    Year = "2012"
}

H. Sepehri-Rad, A. Makazhanov, D. Rafiei, and D. Barbosa. Leveraging editor collaboration patterns in wikipedia. In Proceedings of the 23rd ACM conference on Hypertext and social media, HT '12, 13–22. ACM, 2012. doi:10.1145/2309996.2310001. [Bibtex]

@inproceedings{Rad_etaal_HT2012,
    Author = "Sepehri-Rad, Hoda and Makazhanov, Aibek and Rafiei, Davood and Barbosa, Denilson",
    Acmid = "2310001",
    Booktitle = "Proceedings of the 23rd ACM conference on Hypertext and social media",
    Doi = "10.1145/2309996.2310001",
    Isbn = "978-1-4503-1335-3",
    Keywords = "admin election, controversial articles, social interactions, wikipedia",
    Location = "Milwaukee, Wisconsin, USA",
    Numpages = "10",
    Pages = "13--22",
    Publisher = "ACM",
    Series = "HT '12",
    Title = "Leveraging editor collaboration patterns in wikipedia",
    Year = "2012"
}

M. Bronzi, Z. Guo, F. Mesquita, D. Barbosa, and P. Merialdo. Automatic evaluation of relation extraction systems on large-scale. In Proceedings of the Joint Workshop on Automatic Knowledge Base Construction and Web-scale Knowledge Extraction (AKBC-WEKEX), 19–24. Montreal, Canada, June 2012. Association for Computational Linguistics. URL: http://www.aclweb.org/anthology-new/W/W12/#3000. [Bibtex] [PDF]

@inproceedings{Bronzi_etal_AKBCWEKEX2012,
    Author = "Bronzi, Mirko and Guo, Zhaochen and Mesquita, Filipe and Barbosa, Denilson and Merialdo, Paolo",
    Address = "Montreal, Canada",
    Booktitle = "Proceedings of the Joint Workshop on Automatic Knowledge Base Construction and Web-scale Knowledge Extraction (AKBC-WEKEX)",
    Month = "June",
    Pages = "19--24",
    Pdf = "http://www.aclweb.org/anthology/W12-3004",
    Publisher = "Association for Computational Linguistics",
    Title = "Automatic Evaluation of Relation Extraction Systems on Large-scale",
    Url = "http://www.aclweb.org/anthology-new/W/W12/#3000",
    Year = "2012"
}

S. Husby and D. Barbosa. Topic classification of blog posts using distant supervision. In Proceedings of the Workshop on Semantic Analysis in Social Media, 28–36. Avignon, France, April 2012. Association for Computational Linguistics. URL: http://www.aclweb.org/anthology-new/W/W12/#0600. [Bibtex] [PDF]

@inproceedings{Husby_Barbosa_EACLW2012,
    Author = "Husby, Stephanie and Barbosa, Denilson",
    Address = "Avignon, France",
    Booktitle = "Proceedings of the Workshop on Semantic Analysis in Social Media",
    Month = "April",
    Pages = "28--36",
    Pdf = "http://www.aclweb.org/anthology/W12-0604",
    Publisher = "Association for Computational Linguistics",
    Title = "Topic Classification of Blog Posts Using Distant Supervision",
    Url = "http://www.aclweb.org/anthology-new/W/W12/#0600",
    Year = "2012"
}

T. Sliwkanich, D. Schneider, A. Yong, M. Home, and D. Barbosa. Towards scalable summarization and visualization of large text corpora (abstract only). In Proceedings of the ACM SIGMOD International Conference on Management of Data, 863. 2012. [Bibtex]

@inproceedings{Sliwkanich_etal_SIGMOD2012,
    Author = "Sliwkanich, Tyler and Schneider, Douglas and Yong, Aaron and Home, Mitchell and Barbosa, Denilson",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the ACM SIGMOD International Conference on Management of Data",
    Crossref = "conf/sigmod/2012",
    Ee = "http://doi.acm.org/10.1145/2213836.2213970",
    Pages = "863",
    Title = "Towards scalable summarization and visualization of large text corpora (abstract only)",
    Year = "2012"
}

2011

N. Augsten, D. Barbosa, M. M. Bohlen, and T. Palpanas. Efficient top-k approximate subtree matching in small memory. IEEE Transactions on Knowledge and Data Engineering, 23:1123–1137, 2011. URL: http://doi.ieeecomputersociety.org/10.1109/TKDE.2010.245. [Bibtex]

@article{Augsten_etal_TKDE2011,
    Author = "Augsten, Nikolaus and Barbosa, Denilson and Bohlen, Michael M. and Palpanas, Themis",
    Address = "Los Alamitos, CA, USA",
    Issn = "1041-4347",
    Journal = "IEEE Transactions on Knowledge and Data Engineering",
    Pages = "1123-1137",
    Publisher = "IEEE Computer Society",
    Title = "Efficient Top-k Approximate Subtree Matching in Small Memory",
    Url = "http://doi.ieeecomputersociety.org/10.1109/TKDE.2010.245",
    Volume = "23",
    Year = "2011"
}

G. Leighton and D. Barbosa. Access control policy translation, verification, and minimization within heterogeneous data federations. ACM Transactions on Information and System Security, 2011. URL: http://doi.acm.org/10.1145/2043621.2043625. [Bibtex]

@article{Leighton_Barbosa_TISSEC2011,
    Author = "Leighton, Gregory and Barbosa, Denilson",
    Journal = "ACM Transactions on Information and System Security",
    Number = "3",
    Publisher = "ACM",
    Title = "Access Control Policy Translation, Verification, and Minimization within Heterogeneous Data Federations",
    Url = "http://doi.acm.org/10.1145/2043621.2043625",
    Volume = "14",
    Year = "2011"
}

F. Mesquita and D. Barbosa. Extracting meta statements from the blogosphere. In Proceedings of the Fifth International AAAI Conference on Weblogs and Social Media, 225–232. AAAI, 2011. [Bibtex] [PDF]

@inproceedings{Mesquita_Barbosa_ICWSM2011,
    Author = "Mesquita, Filipe and Barbosa, Denilson",
    Booktitle = "Proceedings of the Fifth International AAAI Conference on Weblogs and Social Media",
    Pages = "225--232",
    Pdf = "http://www.aaai.org/ocs/index.php/ICWSM/ICWSM11/paper/view/2875",
    Publisher = "AAAI",
    Title = "Extracting Meta Statements from the Blogosphere",
    Year = "2011"
}

H. Sepehri-Rad and D. Barbosa. Towards identifying arguments in wikipedia pages. In Proceedings of the 20th International Conference on World Wide Web, 117–118. ACM, 2011. URL: http://doi.acm.org/10.1145/1963192.1963252. [Bibtex]

@inproceedings{Rad_Barbosa_WWW2011,
    Author = "Sepehri-Rad, Hoda and Barbosa, Denilson",
    Booktitle = "Proceedings of the 20th International Conference on World Wide Web",
    Pages = "117-118",
    Publisher = "ACM",
    Title = "Towards identifying arguments in Wikipedia pages",
    Url = "http://doi.acm.org/10.1145/1963192.1963252",
    Year = "2011"
}

C. E. Pires, P. Vieira, M. Saraiva, and D. Barbosa. Generating synthetic database schemas for simulation purposes. In Proceedings of the 22nd International Conference on Database and Expert Systems Applications, 502–510. Springer, 2011. URL: http://dx.doi.org/10.1007/978-3-642-23091-2_44. [Bibtex]

@inproceedings{Pires_etal_DEXA2011,
    Author = "Pires, Carlos Eduardo and Vieira, Priscilla and Saraiva, Marcio and Barbosa, Denilson",
    Booktitle = "Proceedings of the 22nd International Conference on Database and Expert Systems Applications",
    Pages = "502--510",
    Publisher = "Springer",
    Title = "Generating Synthetic Database Schemas for Simulation Purposes",
    Url = "http://dx.doi.org/10.1007/978-3-642-23091-2_44",
    Year = "2011"
}

2010

N. Augsten, D. Barbosa, M. Bohlen, and T. Palpanas. Tasm: top-k approximate subtree matching. In 26th IEEE International Conference on Data Engineering, 353–364. IEEE Computer Society, 2010. URL: http://dx.doi.org/10.1109/ICDE.2010.5447905. [Bibtex] [PDF]

@inproceedings{Augsten_etal_ICDE2010,
    Author = "Augsten, Nikolaus and Barbosa, Denilson and Bohlen, Michael and Palpanas, Themis",
    Booktitle = "26th IEEE International Conference on Data Engineering",
    Pages = "353-364",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/icde10.pdf",
    Publisher = "IEEE Computer Society",
    Title = "TASM: Top-k Approximate Subtree Matching",
    Url = "http://dx.doi.org/10.1109/ICDE.2010.5447905",
    Year = "2010"
}

Best Paper Award

F. Mesquita, Y. Merhav, and D. Barbosa. Extracting information networks from the blogosphere: state-of-the-art and challenges. In 4th Int'l AAAI Conference on Weblogs and Social Media–Data Challenge. 2010. URL: http://www.icwsm.org/2010/data.shtml. [Bibtex]

@inproceedings{Mesquita_Barbosa_ICWSM2010,
    Author = "Mesquita, Filipe and Merhav, Yuval and Barbosa, Denilson",
    Booktitle = "4th Int'l AAAI Conference on Weblogs and Social Media--Data Challenge",
    Title = "Extracting Information Networks from the Blogosphere: State-of-the-Art and Challenges",
    Url = "http://www.icwsm.org/2010/data.shtml",
    Year = "2010"
}

G. Leighton and D. Barbosa. Access control policy translation and verification within heterogeneous data federations. In 15th ACM Symposium on Access Control Models and Technologies, 173–182. ACM, 2010. URL: http://doi.acm.org/10.1145/1809842.1809871. [Bibtex] [PDF]

@inproceedings{Leighton_Barbosa_SACMAT2010,
    Author = "Leighton, Gregory and Barbosa, Denilson",
    Booktitle = "15th ACM Symposium on Access Control Models and Technologies",
    Pages = "173-182",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/sacmat10.pdf",
    Publisher = "ACM",
    Title = "Access control policy translation and verification within heterogeneous data federations",
    Url = "http://doi.acm.org/10.1145/1809842.1809871",
    Year = "2010"
}

A. Celikyilmaz, D. Hakkani-Tur, H. He, G. Kondrak, and D. Barbosa. The actor-topic model for extracting social networks in literary narrative. In Proceedings of the NIPS 2010 Workshop – Machine Learning for Social Computing, 7 pp. 2010. URL: http://mlg.cs.purdue.edu/doku.php?id=mlsc2010. [Bibtex] [PDF]

@inproceedings{Celikyilmaz_etal_NIPS_MLSC2010,
    Author = "Celikyilmaz, Asli and Hakkani-Tur, Dilek and He, Hua and Kondrak, Greg and Barbosa, Denilson",
    Booktitle = "Proceedings of the NIPS 2010 Workshop -- Machine Learning for Social Computing",
    Pages = "7 pp",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/nips2010.pdf",
    Title = "The Actor-Topic Model for Extracting Social Networks in Literary Narrative",
    Url = "http://mlg.cs.purdue.edu/doku.php?id=mlsc2010",
    Year = "2010"
}

P. Cappellari, D. Barbosa, and P. Atzeni. A framework for automatic schema mapping verification through reasoning. In International Workshop on Data Engineering meets the Semantic Web-In conjunction with ICDE 2010, 245–250. IEEE, 2010. URL: http://desweb2010.unimore.it/index.html. [Bibtex] [PDF]

@inproceedings{Cappellari_etal_ICDEW2010,
    Author = "Cappellari, Paolo and Barbosa, Denilson and Atzeni, Paolo",
    Booktitle = "International Workshop on Data Engineering meets the Semantic Web-In conjunction with ICDE 2010",
    Pages = "245-250",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/desweb10.pdf",
    Publisher = "IEEE",
    Title = "A Framework for Automatic Schema Mapping Verification Through Reasoning",
    Url = "http://desweb2010.unimore.it/index.html",
    Year = "2010"
}

Y. Merhav, F. Mesquita, D. Barbosa, W. G. Yee, and O. Frieder. Incorporating global information into named entity recognition systems using relational context. In Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, 883–884. ACM, 2010. URL: http://doi.acm.org/10.1145/1835449.1835664. [Bibtex]

@inproceedings{Merhav_etal_SIGIR2010,
    Author = "Merhav, Yuval and Mesquita, Filipe and Barbosa, Denilson and Yee, Wai Gen and Frieder, Ophir",
    Booktitle = "Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010",
    Pages = "883-884",
    Publisher = "ACM",
    Title = "Incorporating global information into named entity recognition systems using relational context",
    Url = "http://doi.acm.org/10.1145/1835449.1835664",
    Year = "2010"
}

V. Ganev, Z. Guo, D. Serrano, D. Barbosa, and E. Stroulia. Exploring and visualizing academic social networks. In 19th ACM Conference on Information and Knowledge Management, 1963–1964. ACM, 2010. URL: http://doi.acm.org/10.1145/1871437.1871786. [Bibtex]

@inproceedings{Ganev_etal_CIKM2010,
    Author = "Ganev, Veselin and Guo, Zhaochen and Serrano, Diego and Barbosa, Denilson and Stroulia, Eleni",
    Booktitle = "19th ACM Conference on Information and Knowledge Management",
    Pages = "1963-1964",
    Publisher = "ACM",
    Title = "Exploring and visualizing academic social networks",
    Url = "http://doi.acm.org/10.1145/1871437.1871786",
    Year = "2010"
}

M. Hasan, E. Stroulia, D. Barbosa, and M. H. Alalfi. Analyzing natural-language artifacts of the software process. In 26th IEEE International Conference on Software Maintenance, 1–5. 2010. URL: http://dx.doi.org/10.1109/ICSM.2010.5609680. [Bibtex]

@inproceedings{Hasan_etal_ICSM2010,
    Author = "Hasan, Maryam and Stroulia, Eleni and Barbosa, Denilson and Alalfi, Manar H.",
    Booktitle = "26th IEEE International Conference on Software Maintenance",
    Pages = "1-5",
    Title = "Analyzing natural-language artifacts of the software process",
    Url = "http://dx.doi.org/10.1109/ICSM.2010.5609680",
    Year = "2010"
}

2009

V. Ganev, Z. Guo, D. Serrano, B. Tansey, D. Barbosa, and E. Stroulia. An environment for building, exploring and querying academic social networks. In ACM Conference on Management of Emergent Digital Ecosystems, 282–289. ACM, 2009. URL: http://doi.acm.org/10.1145/1643823.1643875. [Bibtex] [PDF]

@inproceedings{GanevGSTBS_MEDES2009,
    Author = "Ganev, Veselin and Guo, Zhaochen and Serrano, Diego and Tansey, Brendan and Barbosa, Denilson and Stroulia, Eleni",
    Booktitle = "ACM Conference on Management of Emergent Digital Ecosystems",
    Pages = "282--289",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/medes09.pdf",
    Publisher = "ACM",
    Title = "An Environment for Building, Exploring and Querying Academic Social Networks",
    Url = "http://doi.acm.org/10.1145/1643823.1643875",
    Year = "2009"
}

G. Leighton and D. Barbosa. Optimizing xml compression. In 6th International XML Database Symposium, 81–105. Springer, 2009. URL: http://dx.doi.org/10.1007/978-3-642-03555-5_8. [Bibtex] [PDF]

@inproceedings{LeightonB_XSym2009,
    Author = "Leighton, Gregory and Barbosa, Denilson",
    Booktitle = "6th International XML Database Symposium",
    Pages = "81-105",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/xsym09.pdf",
    Publisher = "Springer",
    Title = "Optimizing XML Compression",
    Url = "http://dx.doi.org/10.1007/978-3-642-03555-5_8",
    Year = "2009"
}

D. Barbosa, P. Bohannon, J. Freire, C.-C. Kanne, I. Manolescu, V. Vassalos, and M. Yoshikawa. Xml storage. In Encyclopedia of Database Systems, pages 3627–3634. Springer US, 2009. URL: http://dx.doi.org/10.1007/978-0-387-39940-9_771. [Bibtex]

@incollection{BarbosaBFKMVY_DBEnc09,
    Author = "Barbosa, Denilson and Bohannon, Philip and Freire, Juliana and Kanne, Carl-Christian and Manolescu, Ioana and Vassalos, Vasilis and Yoshikawa, Masatoshi",
    Booktitle = "Encyclopedia of Database Systems",
    Pages = "3627-3634",
    Publisher = "Springer US",
    Title = "XML Storage",
    Url = "http://dx.doi.org/10.1007/978-0-387-39940-9_771",
    Year = "2009"
}

D. Barbosa, I. Manolescu, and J. X. Yu. Application benchmark. In Encyclopedia of Database Systems, pages 99–100. Springer US, 2009. URL: http://dx.doi.org/10.1007/978-0-387-39940-9_5055. [Bibtex]

@incollection{BarbosaMY_DBEnc09,
    Author = "Barbosa, Denilson and Manolescu, Ioana and Yu, Jeffrey Xu",
    Booktitle = "Encyclopedia of Database Systems",
    Crossref = "DBLP:reference/db/2009",
    Pages = "99-100",
    Publisher = "Springer US",
    Title = "Application Benchmark",
    Url = "http://dx.doi.org/10.1007/978-0-387-39940-9_5055",
    Year = "2009"
}

D. Barbosa, I. Manolescu, and J. X. Yu. Microbenchmark. In Encyclopedia of Database Systems, pages 1737. Springer US, 2009. URL: http://dx.doi.org/10.1007/978-0-387-39940-9_5054. [Bibtex]

@incollection{BarbosaMY_DBEnc2009a,
    Author = "Barbosa, Denilson and Manolescu, Ioana and Yu, Jeffrey Xu",
    Booktitle = "Encyclopedia of Database Systems",
    Pages = "1737",
    Publisher = "Springer US",
    Title = "Microbenchmark",
    Url = "http://dx.doi.org/10.1007/978-0-387-39940-9_5054",
    Year = "2009"
}

D. Barbosa, I. Manolescu, and J. X. Yu. Xml benchmarks. In Encyclopedia of Database Systems, pages 3576–3579. Springer US, 2009. URL: http://dx.doi.org/10.1007/978-0-387-39940-9_789. [Bibtex]

@incollection{BarbosaMY_DBEnc2009b,
    Author = "Barbosa, Denilson and Manolescu, Ioana and Yu, Jeffrey Xu",
    Booktitle = "Encyclopedia of Database Systems",
    Pages = "3576-3579",
    Publisher = "Springer US",
    Title = "XML Benchmarks",
    Url = "http://dx.doi.org/10.1007/978-0-387-39940-9_789",
    Year = "2009"
}

P. Cappellari and D. Barbosa. Towards automatic schema mapping verification through reasoning. In International Workshop on Logic in Databases, 43–56. 2009. URL: http://www.ruc.dk/dat_en/research/reports/127/. [Bibtex]

@inproceedings{CappellariB_LID2009,
    Author = "Cappellari, Paolo and Barbosa, Denilson",
    Booktitle = "International Workshop on Logic in Databases",
    Date-Modified = "2015-10-01 11:52:44 +0000",
    Pages = "43-56",
    Title = "Towards Automatic Schema Mapping Verification Through Reasoning",
    Url = "http://www.ruc.dk/dat_en/research/reports/127/",
    Year = "2009"
}

G. Leighton and D. Barbosa. Optimizing xml compression (extended abstract). CoRR, 2009. URL: http://arxiv.org/abs/0905.4761. [Bibtex] [PDF]

@article{LeightonB_corr_abs_0905_4761,
    Author = "Leighton, Gregory and Barbosa, Denilson",
    Journal = "CoRR",
    Pdf = "http://arxiv.org/pdf/0905.4761v1",
    Title = "Optimizing XML Compression (Extended Abstract)",
    Url = "http://arxiv.org/abs/0905.4761",
    Volume = "abs/0905.4761",
    Year = "2009"
}

2007

A. S. da Silva, D. Barbosa, J. M. B. Cavalcanti, and M. A. S. Sevalho. Labeling data extracted from the web. In Proceedings of the 6th International Conference on Ontologies, DataBases, and Applications of Semantics, 1099–1116. Springer, 2007. URL: http://dx.doi.org/10.1007/978-3-540-76848-7_72. [Bibtex]

@inproceedings{SilvaBCS_ODBASE2007,
    Author = "da Silva, Altigran Soares and Barbosa, Denilson and Cavalcanti, Joao M. B. and Sevalho, Marco A. S.",
    Booktitle = "Proceedings of the 6th International Conference on Ontologies, DataBases, and Applications of Semantics",
    Pages = "1099-1116",
    Publisher = "Springer",
    Title = "Labeling Data Extracted from the Web",
    Url = "http://dx.doi.org/10.1007/978-3-540-76848-7_72",
    Year = "2007"
}

F. Mesquita, D. Barbosa, E. Cortez, and A. S. da Silva. Fledex: flexible data exchange. In Proceedings of the 9th ACM International Workshop on Web Information and Data Management, 25–32. 2007. URL: http://portal.acm.org/citation.cfm?doid=1316902.1316907. [Bibtex]

@inproceedings{MesquitaBCS_WIDM2007,
    Author = "Mesquita, Filipe and Barbosa, Denilson and Cortez, Eli and  and da Silva, Altigran S.",
    Booktitle = "Proceedings of the 9th ACM International Workshop on Web Information and Data Management",
    Pages = "25-32",
    Title = "FleDEx: Flexible Data Exchange",
    Url = "http://portal.acm.org/citation.cfm?doid=1316902.1316907",
    Year = "2007"
}

J. Park and D. Barbosa. Adaptive record extraction from web pages. In 16th World Wide Web Conference, 1335–1336. Banff, Alberta, Canada, 2007. ACM. [Bibtex] [PDF]

@inproceedings{ParkB_WWW07,
    Author = "Park, Justin and Barbosa, Denilson",
    Address = "Banff, Alberta, Canada",
    Booktitle = "16th World Wide Web Conference",
    Date = "May 8-12",
    Pages = "1335--1336",
    Pdf = "http://www2007.org/posters/poster1012.pdf",
    Publisher = "ACM",
    Title = "Adaptive Record Extraction From Web Pages",
    Year = "2007"
}

F. Mesquita, D. Barbosa, E. Cortez, and A. S. da Silva. A lightweight framework for exchanging web data. Technical Report 2007-876-28, University of Calgary, 2007. [Bibtex] [PDF]

@techreport{MesquitaBCS_UC2007,
    Author = "Mesquita, Filipe and Barbosa, Denilson and Cortez, Eli and  and da Silva, Altigran S.",
    Date = "July",
    Institution = "University of Calgary",
    Number = "2007-876-28",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/2007-876-28.pdf",
    Title = "A Lightweight Framework for Exchanging Web Data",
    Year = "2007"
}

D. Barbosa and G. Elliott. Generating synthetic xml documents by example. Demo at 2007 Conference of the Centre for Advanced Studies on Collaborative research (CASCON), 2007. [Bibtex]

@misc{BarbosaElliott_CASCON2007,
    Author = "Barbosa, Denilson and Elliott, Grant",
    Address = "Toronto, ON",
    Date = "October 22 --25",
    Howpublished = "Demo at 2007 Conference of the Centre for Advanced Studies on Collaborative research (CASCON)",
    Title = "Generating Synthetic XML Documents by Example",
    Year = "2007"
}

2006

D. Barbosa, G. Leighton, and A. Smith. Efficient incremental validation of xml documents after composite updates. In Proceedings of the Fourth International XML Database Symposium (XSym 2006), 107–121. Seoul, Korea, 2006. Springer. URL: http://dx.doi.org/10.1007/11841920_8. [Bibtex]

@inproceedings{BarbosaLS_XSym2006,
    Author = "Barbosa, Denilson and Leighton, Gregory and Smith, Andrew",
    Address = "Seoul, Korea",
    Booktitle = "Proceedings of the Fourth International XML Database Symposium (XSym 2006)",
    Date = "September 10-11",
    Pages = "107-121",
    Publisher = "Springer",
    Title = "Efficient Incremental Validation of XML Documents After Composite Updates",
    Url = "http://dx.doi.org/10.1007/11841920_8",
    Year = "2006"
}

D. Barbosa and A. O. Mendelzon. Declarative generation of synthetic xml data. Softw., Pract. Exper., 36(10):1051–1079, 2006. URL: http://dx.doi.org/10.1002/spe.724. [Bibtex]

@article{BarbosaM_SPE2006,
    Author = "Barbosa, Denilson and Mendelzon, Alberto O.",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Journal = "Softw., Pract. Exper.",
    Number = "10",
    Pages = "1051-1079",
    Title = "Declarative generation of synthetic XML data",
    Url = "http://dx.doi.org/10.1002/spe.724",
    Volume = "36",
    Year = "2006"
}

2005

D. Barbosa, J. Freire, and A. O. Mendelzon. Designing information-preserving mapping schemes for xml. In Proceedings of the 31st International Conference on Very Large Data Bases, 109–120. 2005. [Bibtex] [PDF]

@inproceedings{BarbosaFM_VLDB2005,
    Author = "Barbosa, Denilson and Freire, Juliana and Mendelzon, Alberto O.",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the 31st International Conference on Very Large Data Bases",
    Pages = "109-120",
    Pdf = "http://www.vldb2005.org/program/paper/tue/p109-barbosa.pdf",
    Title = "Designing Information-Preserving Mapping Schemes for XML",
    Year = "2005"
}

M. P. Consens, D. Barbosa, A. M. Teisanu, and L. Mignet. Goals and benchmarks for autonomic configuration recommenders. In Proceedings of the ACM SIGMOD International Conference on Management of Data, 239–250. ACM, 2005. URL: http://doi.acm.org/10.1145/1066157.1066185. [Bibtex]

@inproceedings{ConsensBTM_SIGMOD2005,
    Author = "Consens, Mariano P. and Barbosa, Denilson and Teisanu, Adrian M. and Mignet, Laurent",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the ACM SIGMOD International Conference on Management of Data",
    Pages = "239-250",
    Publisher = "ACM",
    Title = "Goals and Benchmarks for Autonomic Configuration Recommenders",
    Url = "http://doi.acm.org/10.1145/1066157.1066185",
    Year = "2005"
}

D. Barbosa, L. Mignet, and P. Veltri. Studying the xml web: gathering statistics from an xml sample. World Wide Web, 8(4):413–438, 2005. URL: http://dx.doi.org/10.1007/s11280-005-1544-y. [Bibtex]

@article{BarbosaMV_WWWJ2005,
    Author = "Barbosa, Denilson and Mignet, Laurent and Veltri, Pierangelo",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Journal = "World Wide Web",
    Number = "4",
    Pages = "413-438",
    Title = "Studying the XML Web: Gathering Statistics from an XML Sample",
    Url = "http://dx.doi.org/10.1007/s11280-005-1544-y",
    Volume = "8",
    Year = "2005"
}

D. Barbosa. Incremental Validation of XML Documents and Mappings. PhD thesis, Department of Computer Science, University of Toronto, Toronto, Ontario, Canada, 2005. [Bibtex]

@phdthesis{barbosa_phd05,
    Author = "Barbosa, Denilson",
    Address = "Toronto, Ontario, Canada",
    Date = "March",
    School = "Department of Computer Science, University of Toronto",
    Title = "Incremental Validation of XML Documents and Mappings",
    Year = "2005"
}

2004

D. Barbosa, A. O. Mendelzon, L. Libkin, L. Mignet, and M. Arenas. Efficient incremental validation of xml documents. In Proceedings of the 20th International Conference on Data Engineering (ICDE 2004), 671–682. 2004. URL: http://csdl.computer.org/comp/proceedings/icde/2004/2065/00/20650671abs.htm. [Bibtex] [PDF]

@inproceedings{BarbosaMLMA_ICDE2004,
    Author = "Barbosa, Denilson and Mendelzon, Alberto O. and Libkin, Leonid and Mignet, Laurent and Arenas, Marcelo",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the 20th International Conference on Data Engineering (ICDE 2004)",
    Pages = "671-682",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/icde04.pdf",
    Title = "Efficient Incremental Validation of XML Documents",
    Url = "http://csdl.computer.org/comp/proceedings/icde/2004/2065/00/20650671abs.htm",
    Year = "2004"
}

D. Barbosa, J. Freire, and A. O. Mendelzon. Information preservation in xml-to-relational mappings. In Proceedings of the Second International XML Database Symposium (XSym 2004), 66–81. 2004. URL: http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3186&spage=66. [Bibtex] [PDF]

@inproceedings{BarbosaFM_XSym2004,
    Author = "Barbosa, Denilson and Freire, Juliana and Mendelzon, Alberto O.",
    Booktitle = "Proceedings of the Second International XML Database Symposium (XSym 2004)",
    Pages = "66-81",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/xsym04.pdf",
    Title = "Information Preservation in XML-to-Relational Mappings",
    Url = "http://springerlink.metapress.com/openurl.asp?genre=article{\&}issn=0302-9743{\&}volume=3186{\&}spage=66",
    Year = "2004"
}

2003

L. Mignet, D. Barbosa, and P. Veltri. The xml web: a first study. In Proceedings of the Twelfth International World Wide Web Conference, 500–510. ACM, 2003. URL: http://doi.acm.org/10.1145/775152.775223. [Bibtex] [PDF]

@inproceedings{MignetBV_WWW2003,
    Author = "Mignet, Laurent and Barbosa, Denilson and Veltri, Pierangelo",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the Twelfth International World Wide Web Conference",
    Pages = "500-510",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/www2003.pdf",
    Publisher = "ACM",
    Title = "The XML web: a first study",
    Url = "http://doi.acm.org/10.1145/775152.775223",
    Year = "2003"
}

D. Barbosa and A. O. Mendelzon. Finding id attributes in xml documents. In Proceedings of the International XML Database Symposium, 180–194. 2003. URL: http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2824&spage=180. [Bibtex] [PDF]

@inproceedings{BarbosaM_XSym2003,
    Author = "Barbosa, Denilson and Mendelzon, Alberto O.",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the International XML Database Symposium",
    Crossref = "DBLP:conf/xsym/2003",
    Pages = "180-194",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/xsym03.pdf",
    Title = "Finding ID Attributes in XML Documents",
    Url = "http://springerlink.metapress.com/openurl.asp?genre=article{\&}issn=0302-9743{\&}volume=2824{\&}spage=180",
    Year = "2003"
}

L. Mignet, D. Barbosa, and P. Veltri. On the characterization of the xml web. In Proceedings of the Eleventh Italian Symposium on Advanced Database Systems (SEBD 2003), 29–36. 2003. [Bibtex]

@inproceedings{MignetBV_SEBD2003,
    Author = "Mignet, Laurent and Barbosa, Denilson and Veltri, Pierangelo",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the Eleventh Italian Symposium on Advanced Database Systems (SEBD 2003)",
    Crossref = "DBLP:conf/sebd/2003",
    Pages = "29-36",
    Title = "On the Characterization of the XML Web",
    Year = "2003"
}

2002

D. Barbosa, A. O. Mendelzon, J. Keenleyside, and K. A. Lyons. Toxgene: an extensible template-based data generator for xml. In Proceedings of the Fifth International Workshop on the Web and Databases (WebDB 2002), 49–54. 2002. URL: http://www.db.ucsd.edu/webdb2002/papers/50.pdf. [Bibtex] [PDF]

@inproceedings{BarbosaMKL_WebDB2002,
    Author = "Barbosa, Denilson and Mendelzon, Alberto O. and Keenleyside, John and Lyons, Kelly A.",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the Fifth International Workshop on the Web and Databases (WebDB 2002)",
    Pages = "49-54",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/webdb02.pdf",
    Title = "ToXgene: An extensible template-based data generator for XML",
    Url = "http://www.db.ucsd.edu/webdb2002/papers/50.pdf",
    Year = "2002"
}

D. Barbosa, A. O. Mendelzon, J. Keenleyside, and K. A. Lyons. Toxgene: a template-based data generator for xml. In Proceedings of the 2002 ACM SIGMOD International Conference on Management of Data, 616. 2002. URL: http://doi.acm.org/10.1145/564691.564769. [Bibtex] [PDF]

@inproceedings{BarbosaMKL_SIGMOD2002,
    Author = "Barbosa, Denilson and Mendelzon, Alberto O. and Keenleyside, John and Lyons, Kelly A.",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Proceedings of the 2002 ACM SIGMOD International Conference on Management of Data",
    Pages = "616",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/sigmod02.pdf",
    Title = "ToXgene: a template-based data generator for XML",
    Url = "http://doi.acm.org/10.1145/564691.564769",
    Year = "2002"
}

2001

D. Barbosa, A. Barta, A. O. Mendelzon, G. A. Mihaila, F. Rizzolo, and P. Rodriguez-Gianolli. Tox - the toronto xml engine. In Workshop on Information Integration on the Web, 66–73. 2001. [Bibtex] [PDF]

@inproceedings{BarbosaBMMRR_WIIW2001,
    Author = "Barbosa, Denilson and Barta, Attila and Mendelzon, Alberto O. and Mihaila, George A. and Rizzolo, Flavio and Rodriguez-Gianolli, Patricia",
    Bibsource = "DBLP, http://dblp.uni-trier.de",
    Booktitle = "Workshop on Information Integration on the Web",
    Pages = "66-73",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/wiiw.pdf",
    Title = "ToX - the Toronto XML Engine",
    Year = "2001"
}

1999

D. Barbosa, J. P. Kitajima, and W. M. Jr. Parallelizing mpeg video encoding using multiprocessors. In Proceedings of the XII Brazilian Symposium on Computer Graphics and Image Processing, 215–222. Campinas, SP, Brazil, 1999. IEEE Computer Society. URL: http://dl.acm.org/citation.cfm?id=646013.677324. [Bibtex] [PDF]

@inproceedings{BarbosaKMjr_SIBGRAPI1999,
    Author = "Barbosa, Denilson and Kitajima, Joao Paulo and Jr., Wagner Meira",
    Address = "Campinas, SP, Brazil",
    Booktitle = "Proceedings of the XII Brazilian Symposium on Computer Graphics and Image Processing",
    Date = "October",
    Pages = "215-222",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/sibgrapi99.pdf",
    Publisher = "IEEE Computer Society",
    Title = "Parallelizing MPEG Video Encoding using Multiprocessors",
    url = "http://dl.acm.org/citation.cfm?id=646013.677324",
    Year = "1999"
}

D. Barbosa, J. P. Kitajima, and W. M. Jr. Real-time mpeg encoding in shared-memory multiprocessors. In Proceedings of the 2nd International Conference - Parallel Computing Systems 1999. Ensenada, Baja California, Mexico, 1999. CICESE. [Bibtex] [PDF]

@inproceedings{BarbosaKMJr_ICPCS1999,
    Author = "Barbosa, Denilson and Kitajima, João Paulo and Jr, Wagner Meira",
    Address = "Ensenada, Baja California, Mexico",
    Booktitle = "Proceedings of the 2nd International Conference - Parallel Computing Systems 1999",
    Date = "August",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/pcs99.pdf",
    Publisher = "CICESE",
    Title = "Real-time MPEG Encoding in Shared-Memory Multiprocessors",
    Year = "1999"
}

D. Barbosa. Compressao de video digital mpeg em paralelo. Master's thesis, Departamento de Ciência da Computação, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil, 1999. [Bibtex]

@mastersthesis{barbosa_msc1999,
    Author = "Barbosa, Denilson",
    Address = "Belo Horizonte, Brazil",
    Date = "March",
    school = "Departamento de Ciência da Computação, Universidade Federal de Minas Gerais",
    Title = "Compressao de Video Digital MPEG em Paralelo",
    Year = "1999"
}

1998

A. Macedo, E. S. Silva, D. M. Barbosa, M. A. Cristo, J. P. Kitajima, B. Ribeiro-Neto, G. Navarro, and N. Zivian. Experimental analysis of a parallel quicksort-based algorithm for suffix array generation. In Proceedings of the 3rd International Meeting on Vector and Parallel Processing. Porto, Portugal, 1998. [Bibtex] [PDF]

@inproceedings{MacedoSBCKRNNZ_VECPAR1998,
    Author = "Macedo, Autran and Silva, Elaine S. and Barbosa, Denilson M. and Cristo, Marco A. and Kitajima, João Paulo and Ribeiro-Neto, Berthier and Navarro, Gonzalo and Zivian, Nivio",
    Address = "Porto, Portugal",
    Booktitle = "Proceedings of the 3rd International Meeting on Vector and Parallel Processing",
    Date = "June",
    Pdf = "http://www.cs.ualberta.ca/~denilson/files/publications/vecpar98.pdf",
    Title = "Experimental Analysis of a Parallel Quicksort-based Algorithm for Suffix Array Generation",
    Year = "1998"
}