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Wolverhampton Intellectual Repository and E-Theses > Research Institutes > Research Institute in Information and Language Processing > Computational Linguistics Group > A High Precision Information Retrieval Method for WiQA

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/27916
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Title: A High Precision Information Retrieval Method for WiQA
Authors: Orasan, Constantin
Puşcaşu, Georgiana
Citation: In: Evaluation of Multilingual and Multi-modal Information Retrieval: 561-568
Publisher: Springer
Issue Date: 2007
URI: http://hdl.handle.net/2436/27916
DOI: 10.1007/978-3-540-74999-8
Abstract: This paper presents Wolverhampton University’s participation in the WiQA competition. The method chosen for this task combines a high precision, but low recall information retrieval approach with a greedy sentence ranking algorithm. The high precision retrieval is ensured by querying the search engine with the exact topic, in this way obtaining only sentences which contain the topic. In one of the runs, the set of retrieved sentences is expanded using coreferential relations between sentences. The greedy algorithm used for ranking selects one sentence at a time, always the one which adds most information to the set of sentences without repeating the existing information too much. The evaluation revealed that it achieves a performance similar to other systems participating in the competition and that the run which uses coreference obtains the highest MRR score among all the participants.
Type: Book chapter
Language: en
Description: 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers
ISBN: 978-3-540-74998-1
Appears in Collections: Computational Linguistics Group
Computational Linguistics Group

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