Evaluating Passage Retrieval Approaches for Question Answering

  title={Evaluating Passage Retrieval Approaches for Question Answering},
  author={Ian Roberts and Robert J. Gaizauskas},
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 answers, and then these passages are analysed in detail to extract answers from them. Most research to date… CONTINUE READING
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