An Answer Passage Retrieval Strategy for Web-based Question Answering

Xin Li; Dawei Hu; Tianyong Hao; Enhong Chen; Liu Wenyin

2nd International ICST Conference on Scalable Information Systems

Research Article

An Answer Passage Retrieval Strategy for Web-based Question Answering

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Cite: BibTeX Plain Text

@INPROCEEDINGS{10.4108/infoscale.2007.217,
    author={Xin Li and Dawei Hu and Tianyong Hao and Enhong Chen and Liu Wenyin},
    title={An Answer Passage Retrieval Strategy for Web-based Question Answering},
    proceedings={2nd International ICST Conference on Scalable Information Systems},
    proceedings_a={INFOSCALE},
    year={2010},
    month={5},
    keywords={Question Answering Passage Retrieval Semantic Pattern.},
    doi={10.4108/infoscale.2007.217}
}

Xin Li
Dawei Hu
Tianyong Hao
Enhong Chen
Liu Wenyin
Year: 2010
An Answer Passage Retrieval Strategy for Web-based Question Answering
INFOSCALE
ICST
DOI: 10.4108/infoscale.2007.217

Xin Li^1,2,3^,*, Dawei Hu^1,2,3^,*, Tianyong Hao³^,*, Enhong Chen^1,2^,*, Liu Wenyin^2,3^,*

1: Department of Computer Science and Technology, University of Science & Technology of China, Hefei, China
2: Joint Research Lab of Excellence, CityU-USTC Advanced Research Institute, Suzhou, China
3: Department of Computer Science, City University of Hong Kong, Hong Kong, China

*Contact email: xinli@mail.ustc.edu.cn, dwhu@mail.ustc.edu.cn, tianyong@cityu.edu.hk, ehchen@ustc.edu.cn, csliuwy@cityu.edu.hk

Abstract

A passage retrieval strategy for our web-based Question Answering (QA) system is proposed in this paper. We utilize Google to retrieve web documents for answer passage finding. We propose a new method to rewrite the query for passage retrieval. We calculate the relevancy between the query and the passage by combining the term frequency and semantic relevancy. The method has been found effective in the experiment on factoid questions of TREC 2003.

Keywords: Question Answering, Passage Retrieval, Semantic Pattern.

Published: 2010-05-16
Modified: 2011-09-11

: http://dx.doi.org/10.4108/infoscale.2007.217

An Answer Passage Retrieval Strategy for Web-based Question Answering

Abstract

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