发明申请
US20080027925A1 LEARNING A DOCUMENT RANKING USING A LOSS FUNCTION WITH A RANK PAIR OR A QUERY PARAMETER
有权
学习一个文件排序使用一个失败的功能与排名对或一个查询参数
- 专利标题： LEARNING A DOCUMENT RANKING USING A LOSS FUNCTION WITH A RANK PAIR OR A QUERY PARAMETER
- 专利标题（中）： 学习一个文件排序使用一个失败的功能与排名对或一个查询参数
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申请号： US11460838申请日： 2006-07-28
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公开(公告)号： US20080027925A1公开(公告)日： 2008-01-31
- 发明人: Hang Li , Jun Xu , Yunbo Cao , Tie-Yan Liu
- 申请人： Hang Li , Jun Xu , Yunbo Cao , Tie-Yan Liu
- 申请人地址： US WA Redmond
- 专利权人： Microsoft Corporation
- 当前专利权人： Microsoft Corporation
- 当前专利权人地址： US WA Redmond
- 主分类号： G06F17/30
- IPC分类号： G06F17/30
摘要：
A method and system for generating a ranking function to rank the relevance of documents to a query is provided. The ranking system learns a ranking function from training data that includes queries, resultant documents, and relevance of each document to its query. The ranking system learns a ranking function using the training data by weighting incorrect rankings of relevant documents more heavily than the incorrect rankings of not relevant documents so that more emphasis is placed on correctly ranking relevant documents. The ranking system may also learn a ranking function using the training data by normalizing the contribution of each query to the ranking function so that it is independent of the number of relevant documents of each query.
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