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TREC
2000
13 years 6 months ago
The PISAB Question Answering System
The PISAB Question Answering system is based on a combination of Information Extraction and Information Retrieval techniques. Knowledge extracted from documents is modeled as a se...
Giuseppe Attardi, Cristian Burrini
TREC
2007
13 years 6 months ago
Semantic Extensions of the Ephyra QA System for TREC 2007
We describe recent extensions to the Ephyra question answering (QA) system and their evaluation in the TREC 2007 QA track. Existing syntactic answer extraction approaches for fact...
Nico Schlaefer, Jeongwoo Ko, Justin Betteridge, Ma...
ACL
2006
13 years 6 months ago
Exploring Correlation of Dependency Relation Paths for Answer Extraction
In this paper, we explore correlation of dependency relation paths to rank candidate answers in answer extraction. Using the correlation measure, we compare dependency relations o...
Dan Shen, Dietrich Klakow
KDD
2004
ACM
162views Data Mining» more  KDD 2004»
14 years 5 months ago
Discovering Links Between Lexical and Surface Features in Questions and Answers
Information retrieval systems, based on keyword match, are evolving to question answering systems that return short passages or direct answers to questions, rather than URLs point...
Soumen Chakrabarti
AMTA
2004
Springer
13 years 9 months ago
Keyword Translation from English to Chinese for Multilingual QA
The Keyword Translator is a part of the Question Analyzer module in the JAVELIN Question-Answering system; it translates the keywords that are used to query documents and extract a...
Frank Lin, Teruko Mitamura