Juan F. Sequeda

My name is Juan Sequeda and I am a Ph.D. Student in the Department of Computer Sciences at the University of Texas at Austin. I started my undergrad in computer science at the Escuela de Ingeneria de Sistemas y Computacion at the Universidad del Valle in Cali ,Colombia. I then transfered to the University of Texas at Austin in 2006 and received my B.S. in Computer Sciences in 2008.

My research interest is Semantic Web, Ontologies and Databases and my current research involves integrating databases with the Semantic Web.

I am an Invited Expert on the W3C RDB2RDF Working Group.

My advisor is Prof. Daniel P. Miranker.

I am on the organizing committee of the 1st International Workshop on Consuming Linked Data (COLD2010) co-located at the 9th International Semantic Web Confernece (ISWC2010) in Shanghai, China

During the summer of 2009, I worked with Oscar Corcho and Asuncion Gomez-Perez of the Ontology Engineering Group at the Universidad Politecnica de Madrid.

contact info Email: jsequeda AT cs DOT utexas DOT edu Office: TAY 3.140A Tel: 512-471-9540 Curriculum Vitae FOAF profile LinkedIn Blog: Semantic Web in Austin Twitter My Calendar
about me My name is Juan Sequeda and I am a Ph.D. Student in the Department of Computer Sciences at the University of Texas at Austin. I started my undergrad in computer science at the Escuela de Ingeneria de Sistemas y Computacion at the Universidad del Valle in Cali ,Colombia. I then transfered to the University of Texas at Austin in 2006 and received my B.S. in Computer Sciences in 2008. My research interest is Semantic Web, Ontologies and Databases and my current research involves integrating databases with the Semantic Web. I am an Invited Expert on the W3C RDB2RDF Working Group. My advisor is Prof. Daniel P. Miranker. I am on the organizing committee of the 1st International Workshop on Consuming Linked Data (COLD2010) co-located at the 9th International Semantic Web Confernece (ISWC2010) in Shanghai, China During the summer of 2009, I worked with Oscar Corcho and Asuncion Gomez-Perez of the Ontology Engineering Group at the Universidad Politecnica de Madrid.
research interest Database, Data Integration, Semantic Web, Linked Data, etc.
projects Ultrawrap: A Virtual Triple-store for Semantic Web Data Management There is a huge gap between the Semantic Web and Database community. However in recent years, we are starting to see interest from the Database community in the data management aspects of the Semantic Web. The databases to manage Semantic Web data, called triple stores, can be created using relational databases as the backend. However current triple-stores with relational backend have poor performance. The research problem is to identify other ways to take advantage of the existing relational database infrastructure. We have created a novel approach that exposes legacy data in relational databases as a triple-store without the need of replicating the data. Our approach demonstrated that existing commercial SQL query engines already subsume all the algorithms need to support effective query rewriting from the SPARQL language (query language for the Semantic Web) to SQL. Furthermore, our experimental results showed that our approach is better than all other existing triple-stores. Morphster Morphster is an Image-Driven Ontology Editor that supports morphologically based phylogenetic studies. We have developed an innovated method of creating ontologies through images. More info: www.morphster.org
publications Journal Tirmizi, S.H., Aitken, S., Moreira, D., Mungall, C., Sequeda, J.F., Shah, N.H., Miranker, D.P. (2009) OBO & OWL: Roundtrip Ontology Transformation. To appear in BMC Journal of Biomedical Semantics Conferences Sequeda, J F. Garcia-Castro, A. Corcho, O. Tirmizi, S. Miranker, D. (2009) Overcoming database heterogeneity to facilitate social networks: the Colombian displaced population as a case study. In Proceedings of the 18th World Wide Web Conference (WWW2009). WWW in Iberoamerica Track. Madrid, Spain [pdf] Smart tech reconnects Colombians - BBC News - September 9, 2009 Missing Colombians database - BBC Digital Planet Podcast - September 2009 Tirmizi, S. Sequeda, J F. Miranker, D. (2008) Translating SQL Applications to the Semantic Web. In Proceedings of the 19th International Databases and Expert Systems Application Conference (DEXA2008). Turin, Italy [pdf] Workshops Sequeda, J F. Corcho, O. Gomez-Perez, A. (2009) Linked Stream Data: a short paper. 2nd Semantic Sensor Network Workshop at International Semantic Web Conference. Washington DC, US [pdf] Sequeda, J F. Corcho, O. (2009) Generating Data Wrapping Ontologies from Sensor Networks: a case study. 2nd Semantic Sensor Network Workshop at International Semantic Web Conference. Washington DC, US [pdf] Sequeda, J F. Tirmizi, S. Miranker, D. (2007) SQL Databases are a Moving Target. Position Paper for W3C Workshop on RDF Access to Relational Databases. Cambridge, MA, USA [pdf] Sequeda, J F. Hurtado, D. (2006) Proposal of Ontology for Semantic Search in Research and Development Laboratories: OLID. Proceedings of IV International Seminar of Internet Technologies(SITI2006). Popayan, Colombia.[pdf] Posters Sequeda, J F. Depena, R. Miranker, D. (2009) Ultrawrap: Using SQL Views for RDB2RDF. Poster in the 8th International Semantic Web Conference (ISWC2009). Washington DC, US [pdf] [poster] Sequeda, J F. Tirmizi, S. Miranker, D. (2008) A Bootrstrapping Architecture for Integration of Relational Databases to the Semantic Web. Poster in the 7th International Semantic Web Conference (ISWC2008). Karlsruhe, Germany [pdf] Garcia-Castro, A. Norena, A. Betancourt, A. Garcia, L. Sequeda, J F. (2008) CMAPS supporting the development of OWL Ontologies. Poster in the 7th International Semantic Web Conference (ISWC2008). Karlsruhe, Germany [pdf] Tutorial Hartig, O., Sequeda, J F., Sinclair, P., Taylor, J. (2010) How to Consume Linked Data on the Web. Tutorial at the 19th World Wide Web Conference (WWW2010). Washington DC, US [website] Sequeda, J F. Hartig, O., Sinclair, P., Taylor, J. (2009) How to Consume Linked Data on the Web. Tutorial at the 8th International Semantic Web Conference (ISWC2009). Washington DC, US [website] Technical Reports Sequeda, J F., Arenas, M., Miranker, D.P. (2011) On Directly Mapping Relational Databases to RDF and OWL (extended version). Technical Report TR-11-28, University of Texas at Austin, Department of Computer Science, June 2011. [html] Sahoo, S. Halb, W. Hellmann, S. Idehen, K. Thibodeau, T. Auer, S. Sequeda, J F. Ezzat, A. (2009)A Survey of Current Approaches for Mapping of Relational Databases to RDF . W3C RDB2RDF XG Report [pdf] Sequeda, J F. Tirmizi, S.H. Corcho, O. Miranker, D.P. (2009) Direct Mapping SQL Databases to the Semantic Web. Technical Report 09-04. The University of Texas at Austin, Department of Computer Sciences. [pdf] Sequeda, J F. (2008) On Direct Mapping for Integrating SQL Databases to the Semantic Web. Bachelors Thesis. Technical Report 08-09. The University of Texas at Austin, Department of Computer Sciences. [pdf]
Program Committee Extended Semantic Web Conference 2010, Social Web Track (ESWC2010) Extended Semantic Web Conference 2010, Web of Data Track (ESWC2010) 8th International Semantic Web Conference, Posters and Demo Track (ISWC 2009) Linked Data on the Web Workshop (LDOW2009) at WWW2009 I-Semantics Conference 2009
Scholarships and Fellowships 2010 National Science Foundation Graduate Fellowship 2009 Honorable Mention National Science Foundation Graduate Fellowship 2008 - 2009 University of Texas Graduate School Diversity Fellowship 2007 - 2008 National Instruments Endowed Scholarship for Excellence 2007 Intel Foundation Undergraduate Research Fellowship
Travel Grants 2009 International Semantic Web Conference - Chantilly, VA, USA 2009 World Wide Web Conference - Madrid, Spain 2008 International Semantic Web Conference - Karslruhe, Germany 2008 Summer School of Semantic Web and Ontology Engineering - Cercedilla, Spain 2008 Pan-American Advanced Studies Institute: Cyberinfrastructure for International Collaborative Biodiversity and Ecological Informatics - San Jose, Costa Rica
Press The Enterprise Problem Linked Data May Solve - IT Business Edge - April 20, 2010 10 Ideas For Web of Data Apps - Read Write Web - April 15, 2010 Interview with Juan Sequeda: "I believe Linked Data will enable new killer apps that are only possible thanks to Linked Data. " - Semantic Web Company - April 14, 2010 An Open Letter to the City of Austin - Austin Startup - January 27, 2010 Smart tech reconnects Colombians - BBC News - September 9, 2009 Missing Colombians database - BBC Digital Planet Podcast - September 2009
Activities Co-organizer of the 1st International Workshop on Consuming Linked Data (COLD2010) co-located at the 9th International Semantic Web Confernece (ISWC2010) Organizer of the 1st Linked Data-a-thon co-located at 2009 International Semantic Web Conference Co-Founder of Semantic Web Austin Invited Expert on the RDB2RDF Working Group of the World Wide Web Consortium (W3C) Invited Expert on the RDB2RDF Incubator Group of the World Wide Web Consortium (W3C) Founder of Empowering Leadership Alliance at UT Austin. Minority Computer Science Student Organization Technical Advisor at Smartbridge GmbH I do a lot of travelling due to academic conferences. Since 2000 arranging a travel and make all pre-arrangements for hotel reservation and things like that has become a lot more easier. You can use the Internet for that purpose by means of specialized internet resources with advise on restaurants, landmarks and other related stuff. Even though I travel a lot, I always return back to Austin, the city where the University is situated; while Cali remains my hometown, which I visit several times a year.

<	Juan F. Sequeda	>
	Ph.D Student Department of Computer Sciences The University of Texas at Austin