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CLC number: TP393.9

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Received: 2003-07-16

Revision Accepted: 2004-01-19

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Journal of Zhejiang University SCIENCE A 2004 Vol.5 No.11 P.1405-1412


Using Greedy algorithm: DBSCAN revisited II

Author(s):  YUE Shi-hong, LI Ping, GUO Ji-dong, ZHOU Shui-geng

Affiliation(s):  Institute of Industrial Process Control, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   Shyue@iipc.zju.edu.cn

Key Words:  DBSCAN algorithm, Greedy algorithm, Density-skewed cluster

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YUE Shi-hong, LI Ping, GUO Ji-dong, ZHOU Shui-geng. Using Greedy algorithm: DBSCAN revisited II[J]. Journal of Zhejiang University Science A, 2004, 5(11): 1405-1412.

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The density-based clustering algorithm presented is different from the classical Density-Based Spatial Clustering of Applications with Noise (DBSCAN) (Ester et al., 1996), and has the following advantages: first, greedy algorithm substitutes for R*-tree (Bechmann et al., 1990) in DBSCAN to index the clustering space so that the clustering time cost is decreased to great extent and I/O memory load is reduced as well; second, the merging condition to approach to arbitrary-shaped clusters is designed carefully so that a single threshold can distinguish correctly all clusters in a large spatial dataset though some density-skewed clusters live in it. Finally, authors investigate a robotic navigation and test two artificial datasets by the proposed algorithm to verify its effectiveness and efficiency.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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