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Proximity Relevance Model for Query Expansion

Ermakova, Liana and Mothe, Josiane and Nikitina, Elena Proximity Relevance Model for Query Expansion. (2016) In: 31st Annua ACM Symposium on Applied Computing (SAC 2016), 4 April 2016 - 8 April 2016 (Pisa, Italy).

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Official URL: http://dx.doi.org/10.1145/2851613.2851696


Query expansion (QE) aims at improving information retrieval effectiveness by enhancing the query formulation. Because users' queries are generally short and because of the language ambiguity, some information needs are difficult to satisfy. Query reformulation and QE methods have been developed to face this issue. Pseudo relevance feedback (PRF) considers the top retrieved documents as relevant and uses their content in order to expand the initial query. Rather than considering feedback documents as a bag of words, it is possible to exploit term proximity information. Although there are some researches in this direction, the majority of them is empirical. The lack of theoretical works in this area motivated us to introduce a novel method integrated into the language model formalism that takes advantage of the remoteness of candidate terms for QE from query terms within feedback documents. In contrast to previous works, our approach captures the proximity directly and in terms of sentences rather than tokens. We show that the method significantly improves the retrieval performance on TREC collections especially for difficult queries.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to Association for Computing Machinery (ACM ) editor. The definitive version is available at http://dl.acm.org This papers appears in SAC'16 ISBN: 978-1-4503-3739-7 The original PDF is available at: http://dl.acm.org/citation.cfm?id=2851696
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Perm state university (RUSSIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
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Deposited On:30 Jun 2017 09:49

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