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Model-based feedback in the language modeling approach to information retrieval

Zhai, Chengxiang, Lafferty, John·2001·Proceedings of the tenth international conference on Information and knowledge management

Abstract

The language modeling approach to retrieval has been shown to perform well empirically. One advantage of this new approach is its statistical foundations. However, feedback, as one important component in a retrieval system, has only been dealt with heuristically in this new retrieval approach: the original query is usually literally expanded by adding additional terms to it. Such expansion-based feedback creates an inconsistent interpretation of the original and the expanded query. In this paper, we present a more principled approach to feedback in the language modeling approach. Specifically, we treat feedback as updating the query language model based on the extra evidence carried by the feedback documents. Such a model-based feedback strategy easily fits into an extension of the language modeling approach. We propose and evaluate two different approaches to updating a query language model based on feedback documents, one based on a generative probabilistic model of feedback documents and one based on minimization of the KL-divergence over feedback documents. Experiment results show that both approaches are effective and outperform the Rocchio feedback approach.

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Metadata

Authors
Zhai, C., & Lafferty, J.
Venue
Proceedings of the tenth international conference on Information and knowledge management
Publisher
ACM
Published
2001-10-05
Pages
403-410
OpenAlex
W1964348731
Cited by
787
References
24
FWCI
7.48
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Model-based feedback in the language modeling approach to information retrieval. https://app.cochat.ai/papers/10.1145/502585.502654
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Zhai, C., & Lafferty, J. (2001). Model-based feedback in the language modeling approach to information retrieval. Proceedings of the tenth international conference on Information and knowledge management. https://doi.org/10.1145/502585.502654

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