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A data driven procedure for density estimation with some applications
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DOI：10.1016/0031-3203(96)00028-3.png)
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This paper deals with the probability density estimation using a kernel-based approach where the window size of the kernel is found by a data-driven procedure. It is theoretically shown that, under certain assumptions, the estimated densities on bounded sets can be asymptotically unbiased when the width of window is obtained from the minimal spanning tree of the observed data The theoretical development initially carried out on R(2) is applicable to higher dimensional spaces. The results are experimentally verified on bounded sets with different types of distributions. The behaviour of the estimator in the case of the unbounded set as in that for Gaussian density is also experimentally seen to be good. Some applications of the proposed density estimation technique is demonstrated. One application is the representative point detection algorithm, which can be applied for data reduction and outlier rejection. Another application involves detection of border points of a dot pattern as well as finding a thinned version of the dot pattern. Copyright (C) 1996 Pattern Recognition Society.
Keyword:
probability density estimation
kernel method
window selection
minimal spanning tree
bounded set
asymptotically unbiased estimator
representative point
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IF:
7.6
论文数:
1.3W
被引数:
4.5W
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