Feature subset-wise mixture model-based clustering via local search algorithm

  • Authors:
  • Younghwan Namkoong;Yongsung Joo;Douglas D. Dankel

  • Affiliations:
  • Computer and Information Science and Engineering, University of Florida, FL;Department of Statistics, Dongguk University, Seoul, South Korea;Computer and Information Science and Engineering, University of Florida, FL

  • Venue:
  • AI'10 Proceedings of the 23rd Canadian conference on Advances in Artificial Intelligence
  • Year:
  • 2010

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Abstract

In clustering, most feature selection approaches account for all the features of the data to identify a single common feature subset contributing to the discovery of the interesting clusters However, many data can comprise multiple feature subsets, where each feature subset corresponds to the meaningful clusters differently In this paper, we attempt to reveal a feature partition consisting of multiple non-overlapped feature blocks that each one fits a finite mixture model To find the desired feature partition, we used a local search algorithm based on a Simulated Annealing technique During the process of searching for the optimal feature partition, reutilization of the previous estimation results has been adopted to reduce computational cost.