Information Retrieval

18

SIGIR
2009
ACM

91views Information Technology» more SIGIR 2009»

14 years 7 months ago

In recent years, there has been a dramatic proliferation of research on information retrieval based on highly subjective concepts such as emotion, preference and aesthetic. Such r...

Yi-Hsuan Yang, Yu-Ching Lin, Homer H. Chen

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41

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SIGIR
2009
ACM

147views Information Technology» more SIGIR 2009»

Effective query expansion for federated search

14 years 7 months ago

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While query expansion techniques have been shown to improve retrieval performance in a centralized setting, they have not been well studied in a federated setting. In this paper, ...

Milad Shokouhi, Leif Azzopardi, Paul Thomas

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37

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SIGIR
2009
ACM

99views Information Technology» more SIGIR 2009»

On rank correlation and the distance between rankings

14 years 7 months ago

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Rank correlation statistics are useful for determining whether a there is a correspondence between two measurements, particularly when the measures themselves are of less interest...

Ben Carterette

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46

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SIGIR
2009
ACM

213views Information Technology» more SIGIR 2009»

Extracting structured information from user queries with semi-supervised conditional random fields

14 years 7 months ago

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When search is against structured documents, it is beneﬁcial to extract information from user queries in a format that is consistent with the backend data structure. As one step...

Xiao Li, Ye-Yi Wang, Alex Acero

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37

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SIGIR
2009
ACM

104views Information Technology» more SIGIR 2009»

A relevance-based topic model for news event tracking

14 years 7 months ago

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Event tracking is the task of discovering temporal patterns of popular events from text streams. Existing approaches for event tracking have two limitations: scalability and inabi...

Viet Ha-Thuc, Yelena Mejova, Christopher Harris, P...

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36

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SIGIR
2009
ACM

114views Information Technology» more SIGIR 2009»

Web searching for daily living

14 years 7 months ago

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The new concept proposed in this paper is a query free web search that automatically retrieves a web page including information related to the daily activity that we are currently...

Takuya Maekawa, Yutaka Yanagisawa, Yasushi Sakurai...

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22

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SIGIR
2009
ACM

96views Information Technology» more SIGIR 2009»

When more is less: the paradox of choice in search engine use

14 years 7 months ago

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In numerous everyday domains, it has been demonstrated that increasing the number of options beyond a handful can lead to paralysis and poor choice and decrease satisfaction with ...

Antti Oulasvirta, Janne P. Hukkinen, Barry Schwart...

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29

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SIGIR
2009
ACM

94views Information Technology» more SIGIR 2009»

Counting ancestors to estimate authority

14 years 7 months ago

Download www.cse.lehigh.edu

The AncestorRank algorithm calculates an authority score by using just one characteristic of the web graph—the number of ancestors per node. For scalability, we estimate the num...

Jian Wang, Brian D. Davison

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54

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SIGIR
2009
ACM

159views Information Technology» more SIGIR 2009»

Portfolio theory of information retrieval

14 years 7 months ago

Download web4.cs.ucl.ac.uk

This paper studies document ranking under uncertainty. It is tackled in a general situation where the relevance predictions of individual documents have uncertainty, and are depen...

Jun Wang, Jianhan Zhu

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22

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SIGIR
2009
ACM

110views Information Technology» more SIGIR 2009»

Blog distillation using random walks

14 years 7 months ago