Effectiveness of complex index terms in information retrieval
نویسندگان
چکیده
This paper explores the effectiveness of index terms more complex than single words in conventional information retrieval systems. Retrieval is performed in two phases. In the first phase, a conventional retrieval method (the Okapi system) is used and in the second phase, complex index terms such as syntactic relations and single words with part of speech information are introduced to rerank the results of the first phase. The effectiveness of the different types of index terms are evaluated through experiments, in which the TREC-7 test collection and 50 queries are used. The experiments show that retrieval effectiveness was improved for 32 out of 50 queries.
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This paper explores the effectiveness of index terms more complex than single words used in conventional information retrieval systems. Retrieval is performed in two phases. In the first phase, a conventional retrieval method (the Okapi system) is used and in the second phase, complex index terms such as syntactic relations and single words with part of speech information are introduced to rera...
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