A Multi-agent System for Distributed Ontology Learning

The Web offers a large amount of valuable information for every possible domain, but its human-oriented representation and its size makes difficult and extremely time consuming any kind of centralised computer-based processing. In this paper, a combination of distributed AI and information extraction techniques is proposed to tackle this problem. In particular, we have developed a knowledge acquisition platform that crawls the Web using a multi-agent system, composing knowledge structures for different domains from taxonomies of terms. Moreover, the obtained structure is used to represent, in a meaningful way, the web resources available in a domain.

[1]  Steffen Staab,et al.  Discovering Conceptual Relations from Text , 2000, ECAI.

[2]  Dieter Fensel,et al.  Ontologies: A silver bullet for knowledge management and electronic commerce , 2002 .

[3]  David Sánchez,et al.  Knowledge Exploitation from the Web , 2004, PAKM.

[4]  Marius Pasca,et al.  Finding Instance Names and Alternative Glosses on the Web: WordNet Reloaded , 2005, CICLing.

[5]  Gregory Grefenstette.  Short Query Linguistic Expansion Techniques: Palliating One-Word Queries by Providing Intermediate Structure to Text , 1997, SCIE.

[6]  Olatz Ansa,et al.  Enriching very large ontologies using the WWW , 2000, ECAI Workshop on Ontology Learning.

[7]  David Sánchez,et al.  Automatic Generation of Taxonomies from the WWW , 2004, PAKM.

[8]  Vojtech Svátek,et al.  Discovery of Lexical Entries for Non-taxonomic Relations in Ontology Learning , 2004, SOFSEM.

[9]  D. Sánchez,et al.  Creating Ontologies from Web documents , 2004 .

[10]  Achim G. Hoffmann,et al.  A New Approach for Concept-Based Web Search , 2003, Australian Conference on Artificial Intelligence.

[11]  James A. Hendler,et al.  The Semantic Web" in Scientific American , 2001 .

[12]  Antonio Badia,et al.  Ontologies , 2001, Springer Berlin Heidelberg.

[13]  David Sánchez,et al.  An Agent-Based Knowledge Acquisition Platform , 2005, MATES.

[14]  Suresh Manandhar,et al.  An Unsupervised Method for General Named Entity Recognition and Automated Concept Discovery , 2004 .

[15]  Nigel Shadbolt,et al.  Agent-based semantic web services , 2003, WWW '03.

[16]  Barbara Messing,et al.  An Introduction to MultiAgent Systems , 2002, Künstliche Intell..