A Sensitivity Analysis of a Probabilistic Information Retrieval System.

Thompson, Paul

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Peer reviewed

ERIC Number: EJ413686

Record Type: Journal

Publication Date: 1990

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ISSN: ISSN-0002-8231

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A Sensitivity Analysis of a Probabilistic Information Retrieval System.

Thompson, Paul

Journal of the American Society for Information Science, v41 n5 p348-58 Jul 1990

Presents results of simulations that were conducted to test the effects of errors in estimation of individual term probabilities on the performance of a probabilistic information retrieval (PIR) system. Assigning index terms to documents is described; an information retrieval system called Helpnet is explained; and relevance, ranking, and retrieval performance are examined. (17 references) (LRW)

Descriptors: Correlation, Evaluation Methods, Indexing, Information Retrieval, Probability, Questionnaires, Relevance (Information Retrieval), Simulation, User Needs (Information)

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

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