A graph-based estimator of the number of clusters
A graph-based estimator of the number of clusters
复制标题
基于图的聚类数量估计器
DOI:
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
Bruno Pelletier
中科院分区:
文献类型:
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作者:
G. Biau;B. Cadre;Bruno Pelletier
Assessing the number of clusters of a statistical population is one of the essential issues of unsupervised learning. Given n independent observations X1 ,...,Xn drawn from an unknown multivariate probability density f , we propose a new approach to estimate the number of connected components, or clusters, of the t -level set . The basic idea is to form a rough skeleton of the set using any preliminary estimator of f , and to count the number of connected components of the resulting graph. Under mild analytic conditions on f , and using tools from differential geometry, we establish the consistency of our method.