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IR
2010
8 years 8 months ago
Statistical query expansion for sentence retrieval and its effects on weak and strong queries
The retrieval of sentences that are relevant to a given information need is a challenging passage retrieval task. In this context, the well-known vocabulary mismatch problem arises...
David E. Losada
TREC
2007
9 years 10 days ago
TREC 2007 Question Answering Experiments at Tokyo Institute of Technology
In this paper we describe Tokyo Institute of Technology’s attempt at the TREC2007 question answering (QA) track. Keeping the same theoretical QA model as for the TREC2006 task, ...
Edward W. D. Whittaker, Matthias H. Heie, Josef R....
ECIR
2006
Springer
9 years 17 days ago
Sentence Retrieval with LSI and Topic Identification
This paper presents two sentence retrieval methods. We adopt the task definition done in the TREC Novelty Track: sentence retrieval consists in the extraction of the relevant sente...
David Parapar, Alvaro Barreiro
SPIRE
2007
Springer
9 years 5 months ago
Highly Frequent Terms and Sentence Retrieval
In this paper we propose a novel sentence retrieval method based on extracting highly frequent terms from top retrieved documents. We compare it against state of the art sentence r...
David E. Losada, Ronald T. Fernández
CIKM
2009
Springer
9 years 5 months ago
Using opinion-based features to boost sentence retrieval
Opinion mining has become recently a major research topic. A wide range of techniques have been proposed to enable opinion-oriented information seeking systems. However, little is...
Ronald T. Fernández, David E. Losada
books