What Is Not in the Bag of Words for Why-QA?-Reference-Cited by-同舟云学术

What Is Not in the Bag of Words for Why-QA?

Published:2010-06 Issue:2 Volume:36 Page:229-245
ISSN:0891-2017
Container-title:Computational Linguistics
language:en
Short-container-title:Computational Linguistics

Author:

Verberne Suzan¹²³⁴,Boves Lou¹²³⁴,Oostdijk Nelleke¹²³⁴,Coppen Peter-Arno¹²³⁴

Affiliation:

1. * Department of Linguistics, PO Box 9103, 6500 HD Nijmegen, the Netherlands..

2. ** Department of Linguistics, PO Box 9103, 6500 HD Nijmegen, the Netherlands..

3. † Department of Linguistics, PO Box 9103, 6500 HD Nijmegen, the Netherlands..

4. ‡ Department of Linguistics, PO Box 9103, 6500 HD Nijmegen, the Netherlands..

Abstract

While developing an approach to why-QA, we extended a passage retrieval system that uses off-the-shelf retrieval technology with a re-ranking step incorporating structural information. We get significantly higher scores in terms of MRR@150 (from 0.25 to 0.34) and success@10. The 23% improvement that we reach in terms of MRR is comparable to the improvement reached on different QA tasks by other researchers in the field, although our re-ranking approach is based on relatively lightweight overlap measures incorporating syntactic constituents, cue words, and document structure.

Publisher

MIT Press - Journals

Subject

Artificial Intelligence,Computer Science Applications,Linguistics and Language,Language and Linguistics

Link

https://www.mitpressjournals.org/doi/pdf/10.1162/coli.09-032-R1-08-034

Reference4 articles.

1. The Wikipedia XML corpus

2. Term-weighting approaches in automatic text retrieval

3. The EDR electronic dictionary

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