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Author:

Zhang, Dongmei (Zhang, Dongmei.) | Hao, Chunlin (Hao, Chunlin.) | Wu, Chenchen (Wu, Chenchen.) | Xu, Dachuan (Xu, Dachuan.) | Zhang, Zhenning (Zhang, Zhenning.)

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CPCI-S EI Scopus

Abstract:

In this paper, we study the k-means problem with (nonuniform) penalties (k-MPWP) which is a natural generalization of the classic k-means problem. In the k-MPWP, we are given an n-client set D subset of R-d, a penalty cost p(j) > 0 for each j is an element of D, and an integer k <= n. The goal is to open a center subset F subset of R-d with vertical bar F vertical bar <= k and to choose a client subset P subset of D as the penalized client set such that the total cost (including the sum of squares of distance for each client in D \ P to the nearest open center and the sum of penalty cost for each client in P) is minimized. We offer a local search (81 + epsilon)-approximation algorithm for the k-MPWP by using single-swap operation. We further improve the above approximation ratio to (25 + epsilon) by using multi-swap operation.

Keyword:

Local search Penalty k-means Approximation algorithm

Author Community:

  • [ 1 ] [Zhang, Dongmei]Shandong Jianzhu Univ, Sch Comp Sci & Technol, Jinan 250101, Peoples R China
  • [ 2 ] [Hao, Chunlin]Beijing Univ Technol, Coll Appl Sci, Dept Informat & Operat Res, Beijing 100124, Peoples R China
  • [ 3 ] [Xu, Dachuan]Beijing Univ Technol, Coll Appl Sci, Dept Informat & Operat Res, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Zhenning]Beijing Univ Technol, Coll Appl Sci, Dept Informat & Operat Res, Beijing 100124, Peoples R China
  • [ 5 ] [Wu, Chenchen]Tianjin Univ Technol, Coll Sci, Tianjin 300384, Peoples R China

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Source :

COMPUTING AND COMBINATORICS, COCOON 2017

ISSN: 0302-9743

Year: 2017

Volume: 10392

Page: 568-574

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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