I was a research associate at KMi starting from 2003. My research was a key contribution towards an on-going effort in the lab to build a new generation of applications and tools that exploit the large scale and distributed semantic information available online. In particular, my research line was related to explore, develop and evaluate novel forms of Natural Language questions answering, able to take advantage and cope both with the huge number of structured data available on the Semantic...

Keys: Question answering, Ontology mapping and fusion, Knowledge management, Semantic Web, designing and implementing new technology, Java developer

Lopez, V., Uren, V., Sabou, M. and Motta, E. (2011) Is Question Answering fit for the Semantic Web? A Survey, Journal of Semantic Web - Interoperability, Usability, Applicability, In Press

Lopez, V., Fernandez, M., Motta, E. and Stieler, N. (2011) PowerAqua: supporting users in querying and exploring the semantic web, Semantic Web, 3, 3, pp. 249-265

Fernandez, M., Zhang, Z., Lopez, V., Uren, V. and Motta, E. (2011) Ontology augmentation: combining semantic web and text resources, 6th International Conference on Knowledge Capture (K-CAP 2011), Banff, Alberta, Canada

Lopez, V., Nikolov, A., Sabou, M., Uren, V. and Motta, E. (2010) Scaling up Question-Answering to Linked Data, Knowledge Engineering and Knowledge Management by the Masses (EKAW-2010), Lisboa, Portugal

Uren, V., Sabou, M., Motta, E., Fernandez, M., Lopez, V. and Lei, Y. (2010) Reflections on five years of evaluating semantic search systems, International Journal of Metadata, Semantics and Ontologies (IJMSO), 5, 2, pp. 87-98

Lopez, V., Sabou, M., Uren, V. and Motta, E. (2009) Cross-Ontology Question Answering on the Semantic Web -an initial evaluation, Knowledge Capture Conference, 2009, California

Fernandez, M., Lopez, V., Sabou, M., Uren, V., Vallet, D., Motta, E. and Castells, P. (2009) Using TREC for cross-comparison between classic IR and ontology-based search models at a Web scale, Workshop: Semantic Search 2009 Workshop at the 18th International World Wide Web Conference (WWW 2009), Madrid, Spain

Lopez, V., Nikolov, A., , ., , ., , . and Sanchez Nunez, P. (2009) Merging and ranking answers in the Semantic Web: the wisdom of crowds, 4th Asian Semantic Web Conference (ASWC 2009), Shanghai, China

d'Aquin, M., Sabou, M., Motta, E., Angeletou, S., Gridinoc, L., Lopez, V. and Zablith, F. (2008) What can be done with the Semantic Web? An Overview of Watson-based Applications, 5th Workshop on Semantic Web Applications and Perspectives, SWAP 2008, Rome, Italy

d'Aquin, M., Lopez, V. and Motta, E. (2008) FABilT - Finding Answers in a Billion Triples, Semantic Web billion Triple Challenge at ISWC

d'Aquin, M. and Lopez, V. (2008) Finding Answers on the Semantic Web, Nodalities Magazine September / October 2008 issue

Fernandez, M., Lopez, V., Motta, E., Sabou, M., Uren, V., Vallet, D. and Castells, P. (2008) Semantic search meets the Web, 2008 IEEE International Conference on Semantic Computing, Santa Clara, CA, USA, pp. 253-260

d'Aquin, M., Motta, E., Sabou, M., Angeletou, S., Gridinoc, L., Lopez, V. and Guidi, D. (2008) Towards a New Generation of Semantic Web Applications, IEEE Intelligent Systems, 23, 3, pp. 20-28

Uren, V., Lei, Y., Lopez, V., Liu, H., Motta, E. and Giordanino, M. (2007) The usability of semantic search tools: a review, Knowledge Engineering Review, 22, 4, pp. 361-377

Gracia, J., Lopez, V., d'Aquin, M., Sabou, M., Motta, E. and Mena, E. (2007) Solving Semantic Ambiguity to Improve Semantic Web based Ontology Matching, Workshop: Workshop on Ontology Matching at The 6th International Semantic Web Conference and the 2nd Asian Semantic Web Conference

Lopez, V., Uren, V., Motta, E. and Pasin, M. (2007) AquaLog: An ontology-driven question answering system for organizational semantic intranets, Journal of Web Semantics, 5, 2, pp. 72-105, Elsevier

Lei, Y., Lopez, V., Motta, E. and Uren, V. (2007) An Infrastructure for Building Semantic Web Portals, Journal of Web Engineering, 2007, 6, 4

Lopez, V. (2007) State of the art on Semantic Question Answering, KMi-Tech Report 2007

Lopez, V., Fernandez, M., Motta, E., Sabou, M. and Uren, V. (2007) Question Answering on the Real Semantic Web, The 6th International Semantic Web Conference (ISWC 2007), Busan, Korea

Lopez, V., Sabou, M. and Motta, E. (2006) PowerMap: Mapping the Real Semantic Web on the Fly, International Semantic Web Conference., Georgia, Atlanta

Sabou, M., Lopez, V. and Motta, E. (2006) Ontology Selection on the Real Semantic Web: How to Cover the Queen's Birthday Dinner?, EKAW 2006 - 15th International Conference on Knowledge Engineering and Knowledge Management, Podebrady, Czech Republic

Lei, Y., Sabou, M., Lopez, V., Zhu, J., Uren, V. and Motta, E. (2006) An Infrastructure for Acquiring High Quality Semantic Metadata, the 3rd European Semantic Web Conference (ESWC 2006), Budva, Montenegro

Lei, Y., Lopez, V. and Motta, E. (2006) An Infrastructure for Building Semantic Web Portals, Workshop: International Workshop on Web Information System Modeling (WISM 2006), Luxembourg

Lopez, V., Motta, E. and Uren, V. (2006) AquaLog: An ontology-driven Question Answering System to interface the Semantic Web, HLT-NAACL 2006 - Demo session, New York

Lopez, V., Motta, E. and Uren, . (2006) PowerAqua:Fishing the Semantic Web, European Semantic Web Conference 2006, Montenegro

Sabou, M., Lopez, V., Motta, E. and Uren, V. (2006) Ontology Selection: Ontology Evaluation on the Real Semantic Web, Workshop: Evaluation of Ontologies for the Web (EON 2006) at 15th International World Wide Web Conference, Edinburgh

Lopez, V., Motta, E. and Pasin, M. (2005) AquaLog: an ontology-portable question answering system for the semantic web, European Semantic Web Conference 2005, Heraklion, Crete

Lopez, V. and Motta, E. (2005) PowerAqua: An Ontology Question Answering System for the Semantic Web, Workshop: Ontologias y Web Semantiica 2005. Held in conjunction with CAEPIA 2005, Spain

Lopez, V. and Motta, E. (2004) Ontology Driven question answering in AquaLog, 9th International Conference on Applications of Natural Language to Information Systems (NLDB 2004), Manchester, UK