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117
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CLEF
2008
Springer
15 years 5 months ago
Assessing the Impact of Thesaurus-Based Expansion Techniques in QA-Centric IR
In this paper, we assess the impact of using thesaurus-based query expansion methods, at the Information Retrieval (IR) stage of a Question Answering (QA) system. We focus on expan...
Luís Sarmento, Jorge Teixeira, Eugén...
132
Voted
ECIR
2004
Springer
15 years 5 months ago
Complex Linguistic Features for Text Classification: A Comprehensive Study
Abstract. Previous researches on advanced representations for document retrieval have shown that statistical state-of-the-art models are not improved by a variety of different ling...
Alessandro Moschitti, Roberto Basili
162
Voted
MM
2009
ACM
125views Multimedia» more  MM 2009»
15 years 10 months ago
Unfolding speaker clustering potential: a biomimetic approach
Speaker clustering is the task of grouping a set of speech utterances into speaker-specific classes. The basic techniques for solving this task are similar to those used for spea...
Thilo Stadelmann, Bernd Freisleben
169
Voted
SIGUCCS
2006
ACM
15 years 9 months ago
Better results in mathematics lessons with a virtual personal teacher
In this paper we present the results of an experiment made with our e-librarian service ”MatES”, an e-Learning tool on fractions in mathematics. MatES allows students to enter...
Serge Linckels, Carole Dording, Christoph Meinel
139
Voted
CC
2006
Springer
125views System Software» more  CC 2006»
15 years 3 months ago
A tight lower bound for restricted pir protocols
We show that any 1-round 2-server Private Information Retrieval Protocol where the answers are 1-bit long must ask questions that are at least n - 2 bits long, which is nearly equa...
Richard Beigel, Lance Fortnow, William I. Gasarch