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Answer Validation by Information Distance Calculation
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BibTeX
@MISC{Li_answervalidation,
author = {Fangtao Li and Xian Zhang and Xiaoyan Zhu},
title = {Answer Validation by Information Distance Calculation},
year = {}
}
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Abstract
In this paper,an information distance based approach is proposed to perform answer validation for question answering system. To validate an answer candidate, the approach calculates the conditional information distance between the question focus and the candidate under certain condition pattern set. Heuristic methods are designed to extract question focus and generate proper condition patterns from question. General search engines are employed to estimate the Kolmogorov complexity, hence the information distance. Experimental results show that our approach is stable and flexible, and outperforms traditional tfidf methods. 1
Keyphrases
information distance calculation answer validation question focus information distance answer candidate certain condition pattern conditional information distance kolmogorov complexity heuristic method traditional tfidf method general search engine proper condition pattern experimental result
