Temporal pseudo-relevance feedback in microblog retrieval

Authors:
Stewart Whiting;Iraklis A. Klampanos;Joemon M. Jose
Affiliations:
School of Computing Science, University of Glasgow, Scotland, UK;School of Computing Science, University of Glasgow, Scotland, UK;School of Computing Science, University of Glasgow, Scotland, UK
Venue:
ECIR'12 Proceedings of the 34th European conference on Advances in Information Retrieval
Year:
2012

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Abstract

Twitter has become a major outlet for news, discussion and commentary of on-going events and trends. Effective searching of Twitter collections poses a number of issues for traditional document-based information retrieval (IR) approaches, such as limited document term statistics and spam. In this paper we propose a novel approach to pseudo-relevance feedback, based upon the temporal profiles of n-grams extracted from the top N relevance feedback tweets. A weighted graph is used to model temporal correlation between n-grams, with a PageRank variant employed to combine both pseudo-relevant document term distribution and temporal collection evidence. Preliminary experiments with the TREC Microblogging 2011 Twitter corpus indicate that through parameter optimisation, retrieval effectiveness can be improved.