Results 71 to 80 of about 142,318 (186)
CLARITY at the TREC 2011 microblog track [PDF]
, 2011 For the first year of the TREC Microblog Track the CLARITY group concentrated on a number of areas, investigating the underlying term weighting scheme for ranking tweets, incorporating query expansion to introduce new terms into the query, as well as ...
Ferguson, Paul +6 more
core
Parsimonious Language Models for a Terabyte of Text [PDF]
, 2008 The aims of this paper are twofold. Our first aim\ud is to compare results of the earlier Terabyte tracks\ud to the Million Query track. We submitted a number\ud of runs using different document representations\ud (such as full-text, title-fields, or ...
Hiemstra, Djoerd +3 more
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Knowledge-based Query Expansion in Real-Time Microblog Search
, 2015 Since the length of microblog texts, such as tweets, is strictly limited to 140 characters, traditional Information Retrieval techniques suffer from the vocabulary mismatch problem severely and cannot yield good performance in the context of ...
Fan, Feifan +3 more
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Query dependent pseudo-relevance feedback based on wikipedia [PDF]
Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, 2009 Pseudo-relevance feedback (PRF) via query-expansion has been proven to be e®ective in many information retrieval (IR) tasks. In most existing work, the top-ranked documents from an initial search are assumed to be relevant and used for PRF. One problem with this approach is that one or more of the top retrieved documents may be non-relevant, which can ...
Xu, Yang, Jones, Gareth J.F., Wang, Bin
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Combining relevance information in a synchronous collaborative information retrieval environment [PDF]
, 2008 Traditionally information retrieval (IR) research has focussed on a single user interaction modality, where a user searches to satisfy an information need.
Foley, Colum +2 more
core
Pseudo relevance feedback based on majority voting mechanism
International Journal of Web Science, 2017 The pseudo relevance feedback mechanism has come to improve the performance of the CBIR systems before visualising the final results and without any user assistance. In this paper, we show the superiority of our proposed a pseudo relevance feedback scheme 'majority voting algorithm'.
Mawloud Mosbah, Bachir Boucheham
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Miracle’s 2005 Approach to Monolingual Information Retrieval
, 2005 This paper presents the 2005 Miracle’s team approach to Monolingual Information Retrieval. The goal for the experiments in this year was twofold: continue testing the effect of combination approaches on information retrieval tasks, and improving our ...
González Cristóbal, José Carlos +2 more
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Collaborative annotation for pseudo relevance feedback
, 2008 We present a pseudo relevance feedback technique for information retrieval, which expands keyword queries with semantic annotation found in the freely available Del.icio.us collaborative tagging system. We hypothesise that collaborative tags represent semantic information that may render queries more informative, and hence enhance retrieval performance.
Lioma, Christina +2 more
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, 2010 Linear Finite State Machines (LFSMs) are particular primitives widely used in information theory, coding theory and cryptography. Among those linear automata, a particular case of study is Linear Feedback Shift Registers (LFSRs) used in many ...
Arnault, François +3 more
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