Data summarization on probabilistic databases
Data summarization on probabilistic databases
批准号:
312423-2011
负责人:
Wang, Hai
金额:
$1.46万
依托单位:
依托单位国家:
加拿大
项目类别:
Discovery Grants Program - Individual
财政年份:
2012
资助国家:
加拿大
项目状态:
已结题
起止时间:
2012-01-01 至 2013-12-31
中文摘要
在许多数据库管理系统中都使用了数据摘要技术,以便在不需要精确答案或早期反馈有帮助的情况下为查询提供快速的近似答案。例如,数据库管理系统中的查询优化器使用数据汇总技术来快速估计中间结果的大小和不同查询执行计划的成本。许多在线分析处理、数据挖掘和数据可视化应用程序也依赖于数据汇总技术来快速计算查询的近似答案。
英文摘要
Data summarization techniques have been used in many database management systems to provide quick approximate answers to queries when exact answers are not required or when early feedbacks are helpful. For example, the query optimizers in database management systems employ data summarization techniques to quickly estimate the sizes of intermediate results and the costs of different query execution plans. Many on-line analytical processing, data mining, and data visualization applications also rely on data summarization techniques to compute fast approximate answers to queries.
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