发明名称 |
SUPERVISED SEMANTIC INDEXING AND ITS EXTENSIONS |
摘要 |
A system and method for determining a similarity between a document and a query includes building a weight vector for each of a plurality of documents in a corpus of documents stored in memory and building a weight vector for a query input into a document retrieval system. A weight matrix is generated which distinguishes between relevant documents and lower ranked documents by comparing document/query tuples using a gradient step approach. A similarity score is determined between weight vectors of the query and documents in a corpus by determining a product of a document weight vector, a query weight vector and the weight matrix.
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申请公布号 |
US2010179933(A1) |
申请公布日期 |
2010.07.15 |
申请号 |
US20090562802 |
申请日期 |
2009.09.18 |
申请人 |
NEC LABORATORIES AMERICA, INC. |
发明人 |
BAI BING;WESTON JASON;COLLOBERT RONAN;GRANGIER DAVID |
分类号 |
G06F17/30;G06F15/18 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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地址 |
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