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An information retrieval model based on simple Bayesian networks

✍ Scribed by Silvia Acid; Luis M. De Campos; Juan M. Fernández-Luna; Juan F. Huete

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
115 KB
Volume
18
Category
Article
ISSN
0884-8173

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✦ Synopsis

In this article a new probabilistic information retrieval (IR) model, based on Bayesian networks (BNs), is proposed. We first consider a basic model, which represents only direct relationships between the documents in the collection and the terms or keywords used to index them. Next, we study two versions of an extended model, which also represents direct relationships between documents. In either case the BNs are used to compute efficiently, by means of a new and exact propagation algorithm, the posterior probabilities of relevance of the documents in the collection given a query. The performance of the proposed retrieval models is tested through a series of experiments with several standard document collections.

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