| Título: | Natural-language access to the Dianeguide database |
| Autores: |
Vega, José Ogonowski, Antoine |
| Fecha: |
2008-02-27 2008-02-27 1993-02 |
| Publicador: | RUA Docencia |
| Fuente: |
 |
| Tipo: | info:eu-repo/semantics/article |
| Tema: |
Information retrieval system Natural language Query analysis Predicates Normalised terms Dianeguide |
| Descripción: | This paper describes an information retrieval system called NLA which analyses natural language queries. The languages used here are: English, Italian & French. The query analysis is performed in two stages: the comprehension stage, where the user's request is translated into an unambiguous internal form using linguistic analysers, and the search stage where a documentary machine uses the internal representation in order to map it into facts (predicates) recorded in a knowledge base. The documentary machine then tries to broaden the relevant concepts (Normalised Terms [NT]) of the query in order to find other NT's semantically close to the same domain. Finally, replies are worked out by calculating answers to each constraint (predicate-NT pair) through applicative rules and cross-referencing search strategies using Boolean equations. This system is also used to classify and index the records (files) in the Dianeguide database. The internal representation of indexed records is a dependency tree where the leaves are predicates similar to those produced by the natural language interface. |
| Idioma: | Inglés |
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