Algorithms for clustering data
Algorithms for clustering data
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Introduction to statistical pattern recognition (2nd ed.)
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An introduction to Kolmogorov complexity and its applications (2nd ed.)
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IEEE Transactions on Pattern Analysis and Machine Intelligence
Techniques for clustering gene expression data
Computers in Biology and Medicine
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Journal of Intelligent Information Systems
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Information Sciences: an International Journal
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IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Unsupervised model adaptation using information-theoretic criterion
HLT '10 Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics
ICAISC'10 Proceedings of the 10th international conference on Artifical intelligence and soft computing: Part II
Detecting fraud in online games of chance and lotteries
Expert Systems with Applications: An International Journal
Spatial autocorrelation-based information visualization evaluation
Proceedings of the 2012 BELIV Workshop: Beyond Time and Errors - Novel Evaluation Methods for Visualization
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Clustering is a common methodology for analyzing the gene expression data. In this paper, we present a new clustering algorithm from an information-theoretic point of view. First, we propose the minimum entropy (measured on a posteriori probabilities) criterion, which is the conditional entropy of clusters given the observations. Fanoýs inequality indicates that it could be a good criterion for clustering. We generalize the criterion by replacing Shannonýs entropy with Havrda-Charvatýs structural 驴-entropy. Interestingly, the minimum entropy criterion based on structural á-entropy is equal to the probability error of the nearest neighbor method when 驴 = 2. This is another evidence that the proposed criterion is good for clustering. With a non-parametric approach for estimating a posteriori probabilities, an efficient iterative algorithm is then established to minimize the entropy. The experimental results show that the clustering algorithm performs significantly better than k-means/medians, hierarchical clustering, SOM, and EM in terms of adjusted Rand index. Particularly, our algorithm performs very well even when the correct number of clusters is unknown. In addition, most clustering algorithms produce poor partitions in presence of outliers while our method can correctly reveal the structure of data and effectively identify outliers simultaneously.