Elpub : Digital Library : Works

Paper 111elpub2004:
Ontology extraction for index generation

id 111elpub2004
authors Cláudio Gottschalg-Duque and Henning Lobin
year 2004
title Ontology extraction for index generation
source ELPUB2004. Building Digital Bridges: Linking Cultures, Commerce and Science: Proceedings of the 8th ICCC/IFIP International Conference on Electronic Publishing held in Brasília - DF, Brazil 23-26 June 2004 / Edited by: Jan Engelen, Sely M. S. Costa, Ana Cristina S. Moreira. Universidade de Brasília, 2004
summary The administration of electronic publication in the Information Era congregates old and new problems, especially those related with Information Retrieval and Automatic Knowledge Extraction. This article presents an Information Retrieval System that uses Natural Language Processing and Ontology to index collection’s texts. We describe a system that constructs a domain specific ontology, starting from the syntactic and semantic analyses of the texts that compose the collection. First the texts are tokenized, then a robust syntactic analysis is made, subsequently the semantic analysis is accomplished in conformity with a metalanguage of knowledge representation, based on a basic ontology composed of 47 classes. The ontology, automatically extracted, generates richer domain specific knowledge. It propitiates, through its semantic net, the right conditions for the user to find with larger efficiency and agility the terms adapted for the consultation to the texts. A prototype of this system was built and used for the indexation of a collection of 221 electronic texts of Information Science written in Portuguese from Brazil. Instead of being based in statistical theories, we propose a robust Information Retrieval System that uses cognitive theories, allowing a larger efficiency in the answer to the users’ queries.
keywords Electronic publication, information retrieval system, computational linguistics, ontology, index generation
series ELPUB:2004
type full paper
email Claudio.Gottschalg-Duque@germanistik.uni-giessen
content file.pdf (187,699 bytes)
discussion No discussions. Post discussion ...
urn:nbn urn:nbn:se:elpub-111elpub2004
last changed 2004/06/20 17:41
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