发明名称 |
Method for retrieving answers from an information retrieval system |
摘要 |
The invention is a method for retrieving answers to questions from an information retrieval system. The method involves automatically learning phrase features for classifying questions into different types, automatically generating candidate query transformations from a training set of question/answer pairs, and automatically evaluating the candidate transforms on information retrieval systems. At run time, questions are transformed into a set of queries, and re-ranking is performed on the documents retrieved.
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申请公布号 |
US7269545(B2) |
申请公布日期 |
2007.09.11 |
申请号 |
US20010823052 |
申请日期 |
2001.03.30 |
申请人 |
NEC LABORATORIES AMERICA, INC. |
发明人 |
AGICHTEIN YEVGENY;LAWRENCE STEPHEN R. |
分类号 |
G06F17/30;G06F17/00;G06F17/27;G06F17/28 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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