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Projective clustering by histograms
DOI:10.1109/TKDE.2005.47.png)
摘要
En 中文
Recent research suggests that clustering for high-dimensional data should involve searching for hidden subspaces with lower dimensionalities, in which patterns can be observed when data objects are projected onto the subspaces. Discovering such interattribute correlations and location of the corresponding clusters is known as the projective clustering problem. In this paper, we propose an efficient projective clustering technique by histogram construction (EPCH). The histograms help to generate signatures, where a signature corresponds to some region in some subspace, and signatures with a large number of data objects are identified as the regions for subspace clusters. Hence, projected clusters and their corresponding subspaces can be uncovered. Compared to the best previous methods to our knowledge, this approach is more flexible in that less prior knowledge on the data set is required, and it is also much more efficient. Our experiments compare behaviors and performances of this approach and other projective clustering algorithms with different data characteristics. The results show that our technique is scalable to very large databases, and it is able to return accurate clustering results.
Keyword:
projective clustering
histogram
subspace
期刊
IF:
10.4
论文数:
6.9K
被引数:
3.2W
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