IRIT at TREC 2002: Web Track
نویسندگان
چکیده
2 Mercure model Mercure is an information retrieval system based on a connexionist approach and modeled by a multi-layered network. The network is composed of a query layer (set of query terms), a term layer (representing the indexing terms) and a document layer [Boughanem99]. Mercure includes the implementation of a retrieval process based on spreading activation forward and backward through the weighted links. Queries and documents can be used either as inputs or outputs. The links between layers are symmetric and their weights are based on tfidf measure inspired from OKAPI [Robertson00] and SMART term weighting. the query-term links (at stage s) are weighted as follows:
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