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政大機構典藏 > 資訊學院 > 資訊科學系 > 期刊論文 > Item 140.119/15001

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/15001

Title:	Similarity Search in Transaction Databases with a Two-Level Bounding Mechanism
Authors:	J-C- Chuang;C-W- Cho;陳良弼
Date:	2006
Issue Date:	2008-12-16 16:44:39 (UTC+8)
Abstract:	In this paper, we propose a novel indexing method for similarity search in transaction databases where the frequency of database updates can be high. In our method, the incoming transactions are incrementally classified into clusters. The transactions in a cluster are represented using two features, namely the union and the intersection of all the transactions. Based on these two features, the transactions in a cluster are further divided into disjoint groups. As a result, all the transactions are organized as a two-level index structure. With this index, the insertion of a transaction can be quickly done because only a particular cluster needs to be modified. Moreover, when conducting a similarity search, we can compute for each level the lower and upper bounds on the distance between the query and each transaction in the cluster. Based on these bounds, the costs on the distance computation can be greatly reduced.
Relation:	Lecture Notes in Computer Science, 3882, 572-586
Data Type:	article
DOI 連結:	http://dx.doi.org/10.1007/11733836_40
DOI:	10.1007/11733836_40
Appears in Collections:	[資訊科學系] 期刊論文

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