Spatial clustering with Density-Ordered tree

Qing Cheng, Xin Lu, Zhong Liu, Jincai Huang and Guangquan Cheng

Physica A: Statistical Mechanics and its Applications, 2016, vol. 460, issue C, 188-200

Abstract: Clustering has emerged as an active research direction for knowledge discovery in spatial databases. Most spatial clustering methods become ineffective when inappropriate parameters are given or when datasets of diverse shapes and densities are provided. To address this issue, we propose a novel clustering method, called SCDOT (Spatial Clustering with Density-Ordered Tree). By projecting a dataset to a Density-Ordered Tree, SCDOT partitions the data into several relatively small sub-clusters with a box-plot method. A heuristic method is proposed to find the genuine clusters by repeatedly merging sub-clusters and an iteration strategy is utilized to automatically determine input parameters. Moreover, we also provide an innovative way to identify cluster center and noise. Extensive experiments on both synthetic and real-world datasets demonstrate the superior performance of SCDOT over the baseline methods.

Keywords: Spatial clustering; Diverse shapes and densities; Density-Ordered tree; Partition-and-merge strategy (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:460:y:2016:i:c:p:188-200

DOI: 10.1016/j.physa.2016.05.041

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