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公开(公告)号:US08341180B1
公开(公告)日:2012-12-25
申请号:US13231792
申请日:2011-09-13
申请人: Subramanian Arumugam , Peter J. Haas , Ravindranath Chowdary Jampani , Christopher Jermaine , Luis L Perez , Fei Xu
发明人: Subramanian Arumugam , Peter J. Haas , Ravindranath Chowdary Jampani , Christopher Jermaine , Luis L Perez , Fei Xu
IPC分类号: G06F17/30
CPC分类号: G06Q10/04
摘要: A risk analysis system and method are provided. The system includes an analyzer for analyzing database instances by executing a query on each database instance and selecting a cutoff value. The analyzer also discards the sets of uncertainty data that yield query-result values below the cutoff value and retains the database instances that yield query-result values above the cutoff value as elite sets. The system also includes a cloner to replicate the elite sets, and a sampler to modify the elite sets so that each elite set is mutually statistically independent while still yielding query-result values above the cutoff value.
摘要翻译: 提供了风险分析系统和方法。 该系统包括一个分析器,用于通过对每个数据库实例执行查询并选择一个截止值来分析数据库实例。 分析器还丢弃了不确定性数据集,这些数据使得查询结果值低于截止值,并保留了数据库实例,将查询结果值高于截止值作为精英集。 该系统还包括复制精英集的克隆,以及修改精英集的采样器,使得每个精英集相互统计独立,同时仍然产生高于截止值的查询结果值。