Feature Selection for Unsupervised Learning
Feature Selection for Unsupervised Learning
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DOI:
10.1007/978-3-642-34487-9_47
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发表时间:
2012-11
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通讯作者:
J. Adhikary;M. Murty
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文献类型:
--
作者:
J. Adhikary;M. Murty
In this paper, we present a methodology for identifying best features from a large feature space. In high dimensional feature space nearest neighbor search is meaningless. In this feature space we see quality and performance issue with nearest neighbor search. Many data mining algorithms use nearest neighbor search. So instead of doing nearest neighbor search using all the features we need to select relevant features. We propose feature selection using Non-negative Matrix Factorization(NMF) and its application to nearest neighbor search.Recent clustering algorithm based on Locally Consistent Concept Factorization(LCCF) shows better quality of document clustering by using local geometrical and discriminating structure of the data. By using our feature selection method we have shown further improvement of performance in the clustering.