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公开(公告)号:US08473486B2
公开(公告)日:2013-06-25
申请号:US12962751
申请日:2010-12-08
申请人: Xiaodong He , Jianfeng Gao , Jennifer Gillenwater
发明人: Xiaodong He , Jianfeng Gao , Jennifer Gillenwater
CPC分类号: G06F17/30864
摘要: A supervised technique uses relevance judgments to train a dependency parser such that it approximately optimizes Normalized Discounted Cumulative Gain (NDCG) in information retrieval. A weighted tree edit distance between the parse tree for a query and the parse tree for a document is added to a ranking function, where the edit distance weights are parameters from the parser. Using parser parameters in the ranking function enables approximate optimization of the parser's parameters for NDCG by adding some constraints to the objective function.
摘要翻译: 监督技术使用相关性判断来训练依赖性解析器,使得它在信息检索中大致优化归一化折扣累积增益(NDCG)。 用于查询的解析树和文档的解析树之间的加权树编辑距离被添加到排序函数,其中编辑距离权重是来自解析器的参数。 在排序函数中使用解析器参数可以通过向目标函数添加一些约束来近似优化NDCG的解析器参数。
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公开(公告)号:US20120150836A1
公开(公告)日:2012-06-14
申请号:US12962751
申请日:2010-12-08
申请人: Xiaodong He , Jianfeng Gao , Jennifer Gillenwater
发明人: Xiaodong He , Jianfeng Gao , Jennifer Gillenwater
IPC分类号: G06F17/30
CPC分类号: G06F17/30864
摘要: A supervised technique uses relevance judgments to train a dependency parser such that it approximately optimizes Normalized Discounted Cumulative Gain (NDCG) in information retrieval. A weighted tree edit distance between the parse tree for a query and the parse tree for a document is added to a ranking function, where the edit distance weights are parameters from the parser. Using parser parameters in the ranking function enables approximate optimization of the parser's parameters for NDCG by adding some constraints to the objective function.
摘要翻译: 监督技术使用相关性判断来训练依赖性解析器,使得它在信息检索中大致优化归一化折扣累积增益(NDCG)。 用于查询的解析树和文档的解析树之间的加权树编辑距离被添加到排序函数,其中编辑距离权重是来自解析器的参数。 在排序函数中使用解析器参数可以通过向目标函数添加一些约束来近似优化NDCG的解析器参数。
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