Recent Publications

2013

• Shallow Information Extraction for the Knowledge Web. Denilson Barbosa, Haixun Wang and Cong Yu. In IEEE 29th International Conference on Data Engineering. IEEE, 2013.
• SociQL: A Query Language for the SocialWeb. Serrano, Diego, Stroulia, Eleni, Barbosa, Denilson and Guana, Victor. In Advances in Network Analysis and its Applications, pp. 381-406. Springer Berlin Heidelberg, 2013.

2012

• Extracting information networks from the blogosphere. Merhav, Yuval, Mesquita, Filipe, Barbosa, Denilson, Yee, Wai Gen and Frieder, Ophir. ACM Trans. Web, 6(3):pp. 11:1-11:33, oct 2012.
• Pre-Query Discovery of Domain-specific Query Forms: A Survey. Mauricio Moraes, Carlos A. Heuser, Viviane Moreira and Denilson Barbosa. IEEE Transactions on Knowledge and Data Engineering, 2012. (to appear).
• Leveraging editor collaboration patterns in wikipedia. Hoda Sepehri Rad, Aibek Makazhanov, Davood Rafiei and Denilson Barbosa. In Proceedings of the 23rd ACM conference on Hypertext and social media, pp. 13-22. ACM, 2012.
• Identifying controversial articles in Wikipedia: A comparative study. Hoda Sepehri-Rad and Denilson Barbosa. In 8th International Symposium on Wikis and Open Collaboration.
• Topic Classification of Blog Posts Using Distant Supervision. Stephanie Husby and Denilson Barbosa. In Proceedings of the Workshop on Semantic Analysis in Social Media, pp. 28-36. Association for Computational Linguistics, Avignon, France, April 2012.
• Automatic Evaluation of Relation Extraction Systems on Large-scale. Mirko Bronzi, Zhaochen Guo, Filipe Mesquita, Denilson Barbosa and Paolo Merialdo. In Proceedings of the Joint Workshop on Automatic Knowledge Base Construction and Web-scale Knowledge Extraction (AKBC-WEKEX), pp. 19-24. Association for Computational Linguistics, Montreal, Canada, June 2012.
• Towards scalable summarization and visualization of large text corpora (abstract only). Tyler Sliwkanich, Douglas Schneider, Aaron Yong, Mitchell Home and Denilson Barbosa. In Proceedings of the ACM SIGMOD International Conference on Management of Data, pp. 863, 2012. (Best Undergraduate Poster Award)

2011

• Efficient Top-k Approximate Subtree Matching in Small Memory. Nikolaus Augsten, Denilson Barbosa, Michael M. Bohlen and Themis Palpanas. IEEE Transactions on Knowledge and Data Engineering, 23:pp. 1123-1137, 2011.
• Access Control Policy Translation, Verification, and Minimization within Heterogeneous Data Federations. Gregory Leighton and Denilson Barbosa. ACM Transactions on Information and System Security, 14(3), 2011.
• Extracting Meta Statements from the Blogosphere. Filipe Mesquita and Denilson Barbosa. In Proceedings of the Fifth International AAAI Conference on Weblogs and Social Media, pp. 225-232. AAAI, 2011.
• Generating Synthetic Database Schemas for Simulation Purposes. Carlos Eduardo Pires, Priscilla Vieira, Marcio Saraiva and Denilson Barbosa. In Proceedings of the 22nd International Conference on Database and Expert Systems Applications, 2011.
• Towards identifying arguments in Wikipedia pages. Hoda Sepehri-Rad and Denilson Barbosa. In Proceedings of the 20th International Conference on World Wide Web, pp. 117-118. ACM, 2011.

2010

• TASM: Top-k Approximate Subtree Matching. Nikolaus Augsten, Denilson Barbosa, Michael Bohlen and Themis Palpanas. In 26th IEEE International Conference on Data Engineering, pp. 353-364. IEEE Computer Society, 2010. (Best Paper Award)
• Access control policy translation and verification within heterogeneous data federations. Gregory Leighton and Denilson Barbosa. In 15th ACM Symposium on Access Control Models and Technologies, pp. 173-182. ACM, 2010.
• Extracting Information Networks from the Blogosphere: State-of-the-Art and Challenges. Filipe Mesquita, Yuval Merhav and Denilson Barbosa. In 4th Int'l AAAI Conference on Weblogs and Social Media--Data Challenge, 2010.
• The Actor-Topic Model for Extracting Social Networks in Literary Narrative. Asli Celikyilmaz, Dilek Hakkani-Tur, Hua He, Greg Kondrak and Denilson Barbosa. In Proceedings of the NIPS 2010 Workshop -- Machine Learning for Social Computing, pp. 7 pp, 2010.
• Analyzing natural-language artifacts of the software process. Maryam Hasan, Eleni Stroulia, Denilson Barbosa and Manar H. Alalfi. In 26th IEEE International Conference on Software Maintenance, pp. 1-5, 2010.
• A Framework for Automatic Schema Mapping Verification Through Reasoning. Paolo Cappellari, Denilson Barbosa and Paolo Atzeni. In International Workshop on Data Engineering meets the Semantic Web-In conjunction with ICDE 2010, pp. 245-250. IEEE, 2010.
• Incorporating global information into named entity recognition systems using relational context. Yuval Merhav, Filipe Mesquita, Denilson Barbosa, Wai Gen Yee and Ophir Frieder. In Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, pp. 883-884. ACM, 2010.
• Exploring and visualizing academic social networks. Veselin Ganev, Zhaochen Guo, Diego Serrano, Denilson Barbosa and Eleni Stroulia. In 19th ACM Conference on Information and Knowledge Management, pp. 1963-1964. ACM, 2010.

2009

• An Environment for Building, Exploring and Querying Academic Social Networks. Veselin Ganev, Zhaochen Guo, Diego Serrano, Brendan Tansey, Denilson Barbosa and Eleni Stroulia. In ACM Conference on Management of Emergent Digital Ecosystems, pp. 282-289. ACM, 2009.
• Optimizing XML Compression. Gregory Leighton and Denilson Barbosa. In 6th International XML Database Symposium, pp. 81-105. Springer, 2009.
• XML Benchmarks. Denilson Barbosa, Ioana Manolescu and Jeffrey Xu Yu. In Encyclopedia of Database Systems, pp. 3576-3579. Springer US, 2009.
• Microbenchmark. Denilson Barbosa, Ioana Manolescu and Jeffrey Xu Yu. In Encyclopedia of Database Systems, pp. 1737. Springer US, 2009.
• XML Storage. Denilson Barbosa, Philip Bohannon, Juliana Freire, Carl-Christian Kanne, Ioana Manolescu, Vasilis Vassalos and Masatoshi Yoshikawa. In Encyclopedia of Database Systems, pp. 3627-3634. Springer US, 2009.
• Application Benchmark. Denilson Barbosa, Ioana Manolescu and Jeffrey Xu Yu. In Encyclopedia of Database Systems, pp. 99-100. Springer US, 2009.
• Towards Automatic Schema Mapping Verification Through Reasoning. Paolo Cappellari and Denilson Barbosa. In International Workshop on Logic in Databases (LID 2009), pp. 43-56.
• Optimizing XML Compression. Gregory Leighton and Denilson Barbosa. CoRR, abs/0905.4761, 2009.

2007

• Database and XMLTechnologies, 5th International XML Database Symposium, XSym 2007, Vienna, Austria, September 23-24, 2007, Proceedings. Denilson Barbosa and Angela Bonifati and Zohra Bellahsene and Ela Hunt and Rainer Unland, editor. volume 4704 of Lecture Notes in Computer Science, Springer, 2007.
• Labeling Data Extracted from the Web. Altigran Soares da Silva, Denilson Barbosa, Joao M. B. Cavalcanti and Marco A. S. Sevalho. In Proceedings of the 6th International Conference on Ontologies, DataBases, and Applications of Semantics, pp. 1099-1116. Springer, 2007.
• FleDEx: Flexible Data Exchange. Filipe Mesquita, Denilson Barbosa, Eli Cortez and and Altigran S. da Silva. In Proceedings of the 9th ACM International Workshop on Web Information and Data Management, pp. 25-32, 2007.
• Adaptive Record Extraction From Web Pages. Justin Park and Denilson Barbosa. In 16th World Wide Web Conference, pp. 1335-1336. ACM, Banff, Alberta, Canada, 2007.
• Generating Synthetic XML Documents by Example. Denilson Barbosa and Grant Elliott. Demo at 2007 Conference of the Centre for Advanced Studies on Collaborative research (CASCON), 2007.
• A Lightweight Framework for Exchanging Web Data. Filipe Mesquita, Denilson Barbosa, Eli Cortez and and Altigran S. da Silva. Technical report 2007-876-28, University of Calgary, 2007.

2006

• Efficient Incremental Validation of XML Documents After Composite Updates. Denilson Barbosa, Gregory Leighton and Andrew Smith. In Proceedings of the Fourth International XML Database Symposium (XSym 2006), pp. 107-121. Springer, Seoul, Korea, 2006.
• Declarative generation of synthetic XML data. Denilson Barbosa and Alberto O. Mendelzon. Softw., Pract. Exper., 36(10):pp. 1051-1079, 2006.

2005

• Designing Information-Preserving Mapping Schemes for XML. Denilson Barbosa, Juliana Freire and Alberto O. Mendelzon. In Proceedings of the 31st International Conference on Very Large Data Bases, pp. 109-120, 2005.
• Goals and Benchmarks for Autonomic Configuration Recommenders. Mariano P. Consens, Denilson Barbosa, Adrian M. Teisanu and Laurent Mignet. In Proceedings of the ACM SIGMOD International Conference on Management of Data, pp. 239-250. ACM, 2005.
• Studying the XML Web: Gathering Statistics from an XML Sample. Denilson Barbosa, Laurent Mignet and Pierangelo Veltri. World Wide Web, 8(4):pp. 413-438, 2005.
• Incremental Validation of XML Documents and Mappings. Denilson Barbosa. PhD thesis, Department of Computer Science, University of Toronto, 2005.

2004

• Efficient Incremental Validation of XML Documents. Denilson Barbosa, Alberto O. Mendelzon, Leonid Libkin, Laurent Mignet and Marcelo Arenas. In Proceedings of the 20th International Conference on Data Engineering (ICDE 2004), pp. 671-682, 2004.
• Information Preservation in XML-to-Relational Mappings. Denilson Barbosa, Juliana Freire and Alberto O. Mendelzon. In Proceedings of the Second International XML Database Symposium (XSym 2004), pp. 66-81, 2004.
• Information Preservation in XML-to-Relational Mappings. Denilson Barbosa, Juliana Freire and Alberto O. Mendelzon. Technical report CSRG-494, University of Toronto, 2004.
• Experimental Evaluation of Autonomic Indexing. Denilson Barbosa, Mariano P. Consens and Laurent Mignet. Technical report CSRG-495, University of Toronto, 2004.
• CASCON 2003 Workshop Report - XML Query Processing. Denilson Barbosa and Alberto O. Mendelzon. Technical report TR74-193-2, IBM, 2004.

2003

• The XML web: a first study. Laurent Mignet, Denilson Barbosa and Pierangelo Veltri. In Proceedings of the Twelfth International World Wide Web Conference, pp. 500-510. ACM, 2003.
• Finding ID Attributes in XML Documents. Denilson Barbosa and Alberto O. Mendelzon. In Proceedings of the International XML Database Symposium, pp. 180-194, 2003.
• On the Characterization of the XML Web. Laurent Mignet, Denilson Barbosa and Pierangelo Veltri. In Proceedings of the Eleventh Italian Symposium on Advanced Database Systems (SEBD 2003), pp. 29-36, 2003.
• CASCON 2002 Workshop Report - XML Data Management. Denilson Barbosa and Alberto O. Mendelzon. Technical report TR-74.188-14, IBM, 2003.
• ToXgene Template Specification Language. Denilson Barbosa. Technical report CSRG-474, University of Toronto, 2003.

2002

• ToXgene: a template-based data generator for XML. Denilson Barbosa, Alberto O. Mendelzon, John Keenleyside and Kelly A. Lyons. In Proceedings of the 2002 ACM SIGMOD International Conference on Management of Data, pp. 616, 2002.
• ToXgene: An extensible template-based data generator for XML. Denilson Barbosa, Alberto O. Mendelzon, John Keenleyside and Kelly A. Lyons. In Proceedings of the Fifth International Workshop on the Web and Databases (WebDB 2002), pp. 49-54, 2002.
• The XML Web: a First Study. Laurent Mignet, Denilson Barbosa and Pierangelo Veltri. Technical report CSRG-463, University of Toronto, 2002.

2001

• ToX - the Toronto XML Engine. Denilson Barbosa, Attila Barta, Alberto O. Mendelzon, George A. Mihaila, Flavio Rizzolo and Patricia Rodriguez-Gianolli. In Workshop on Information Integration on the Web, pp. 66-73, 2001.

2000

• On the World Wide Web, XML and Open Hypermedia Systems (Extended Abstract). Denilson Barbosa. Poster at CITO Knowledge Network Conference, 2000.
• On Storage Methods for Semistructured Data. Denilson Barbosa. Unpublished manuscript, 2000.
• XML and Hypermedia Applications. Denilson Barbosa. Unpublished manuscript, 2000.

1999

• Parallelizing MPEG Video Encoding using Multiprocessors. Denilson Barbosa, João Paulo Kitajima and Wagner Meira Jr.. In Proceedings of the XII Brazilian Symposium on Computer Graphics and Image Processing, pp. 215-222. IEEE Computer Society, Campinas, SP, Brazil, 1999.
• Real-time MPEG Encoding in Shared-Memory Multiprocessors. Denilson Barbosa, João Paulo Kitajima and Wagner Meira Jr. In Proceedings of the 2nd International Conference - Parallel Computing Systems 1999. CICESE, Ensenada, Baja California, Mexico, 1999.
• Compressao de Video Digital MPEG em Paralelo. Denilson Barbosa. Master's thesis, Departamento de Ciencia da Computcao, Universidade Federal de Minas Gerais, 1999.

1998

• Experimental Analysis of a Parallel Quicksort-based Algorithm for Suffix Array Generation. Autran Macedo, Elaine S. Silva, Denilson M. Barbosa, Marco A. Cristo, João Paulo Kitajima, Berthier Ribeiro-Neto, Gonzalo Navarro and Nivio Zivian. In Proceedings of the 3rd International Meeting on Vector and Parallel Processing, Porto, Portugal, 1998.

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