The Use of NLP Techniques in CLIR

The application of nlp techniques to improve the results of information retrieval is still considered as a controversial issue, whereas nlp techniques in cross-language information retrieval (clir) are already well established, at least for the translation part. In this paper, the clir component - Mpro-IR - is represented which has been developed as the core module of a multilingual information system in a legal domain. This component uses not only the lexical base form for indexing but, in addition derivational information and for German information about the decomposition of compounds. This information is provided by a sophisticated morpho-syntactic analyser (mpro) and is exploited not only for query translation but also for query expansion as well as the search and the document ranking. Mpro-IR is developed for a domain with a focus on recall. The objective of the clef evaluation was to assess this linguistic based retrieval approach in an unrestricted domain. The focus of the inve...

• Type: Conference
• Year: 2000
• Where: CLEF
• Authors: Bärbel Ripplinger
• Keywords: CLEF 2000, Cross-language Information Retrieval, Information Management, Information Retrieval, Nlp Techniques