Database Systems for Advanced Applications - 14th International Conference, DASFAA 2009, Brisbane, Australia, April 21-23, 2009. Proceedings
Database Systems for Advanced Applications - 14th International Conference, DASFAA 2009, Brisbane, Australia, April 21-23, 2009. Proceedings
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高级应用数据库系统 - 第 14 届国际会议,DASFAA 2009,澳大利亚布里斯班,2009 年 4 月 21-23 日。会议记录
DOI:
10.1007/978-3-642-00887-0_60
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Huang Z
中科院分区:
文献类型:
--
作者:
Huang Z
Observing that current Global Similarity Measures (GSM) which average the effect of few significant differences on all dimensions may cause possible performance limitation, we propose the first Dimension-specific Similarity Measure (DSM) to take local dimension-specific constraints into consideration. The rationale for DSM is that significant differences on some individual dimensions may lead to different semantics. An efficient search algorithm is proposed to achieve fast Dimension-specific KNN (DKNN) retrieval. Experiment results show that our methods outperform traditional methods by large gaps.