A methodology to create legal ontologies in a logic programming information retrieval system

Authors:
José Saias;Paulo Quaresma
Affiliations:
Departamento de Informática, Universidade de Évora, Évora, Portugal;Departamento de Informática, Universidade de Évora, Évora, Portugal
Venue:
Law and the Semantic Web
Year:
2005

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Abstract

Legal web information retrieval systems need the capability to reason with the knowledge modeled by legal ontologies. Using this knowledge it is possible to represent and to make inferences about the semantic content of legal documents. In this paper a methodology for applying NLP techniques to automatically create a legal ontology is proposed. The ontology is defined in the OWL semantic web language and it is used in a logic programming framework, EVOLP+ISCO, to allow users to query the semantic content of the documents. ISCO allows an easy and efficient integration of declarative, object-oriented and constraint-based programming techniques with the capability to create connections with external databases. EVOLP is a dynamic logic programming framework allowing the definition of rules for actions and events. An application of the proposed methodology to the legal information retrieval system of the Portuguese Attorney General's Office is described.