Linguistic and semantic passage retrieval strategies for question answering
نویسندگان
چکیده
منابع مشابه
Boosting Passage Retrieval through Reuse in Question Answering
Question Answering (QA) is an emerging important field in Information Retrieval. In a QA system the archive of previous questions asked from the system makes a collection full of useful factual nuggets. This paper makes an initial attempt to investigate the reuse of facts contained in the archive of previous questions to help and gain performance in answering future related factoid questions. I...
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In this paper we investigate the use of linguistic knowledge in passage retrieval as part of an open-domain question answering system. We use annotation produced by a deep syntactic dependency parser for Dutch, Alpino, to extract various kinds of linguistic features and syntactic units to be included in a multi-layer index. Similar annotation is produced for natural language questions to be ans...
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Information retrieval (IR) techniques are used in question answering (QA) to retrieve passages from large document collections which are relevant to answering given natural language questions. In this paper we investigate the impact of document segmentation approaches on the retrieval performance of the IR component in our Dutch QA system. In particular we compare segmentations into discourse-b...
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Automatic open domain question answering (QA) has been the focus of much recent research, stimulated by the introduction of a QA track in TREC in 1999. Many QA systems have been developed and most follow the same broad pattern of operation: first an information retrieval (IR) system, often passage-based, is used to find passages from a large document collection which are likely to contain answe...
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Passage Retrieval (PR) is typically used as the first step in current Question Answering (QA) systems. Most methods are based on the vector space model allowing the finding of relevant passages for general user needs, but failing on selecting pertinent passages for specific user questions. This paper describes a simple PR method specially suited for the QA task. This method considers the struct...
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ژورنال
عنوان ژورنال: ACM SIGIR Forum
سال: 2011
ISSN: 0163-5840
DOI: 10.1145/1924475.1924495