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Author:

Zhang, Dongmei (Zhang, Dongmei.) | Hao, Chunlin (Hao, Chunlin.) | Wu, Chenchen (Wu, Chenchen.) | Xu, Dachuan (Xu, Dachuan.) (Scholars:徐大川) | Zhang, Zhenning (Zhang, Zhenning.)

Indexed by:

EI Scopus SCIE

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. 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:

k-means Penalty Approximation algorithm Local search

Author Community:

  • [ 1 ] [Zhang, Dongmei]Shandong Jianzhu Univ, Sch Comp Sci & Technol, Jinan 250101, Shandong, Peoples R China
  • [ 2 ] [Hao, Chunlin]Beijing Univ Technol, Coll Appl Sci, Dept Informat & Operat Res, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Zhenning]Beijing Univ Technol, Coll Appl Sci, Dept Informat & Operat Res, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Wu, Chenchen]Tianjin Univ Technol, Coll Sci, Tianjin 300384, Peoples R China
  • [ 5 ] [Xu, Dachuan]Beijing Univ Technol, Beijing Inst Sci & Engn Comp, 100 Pingleyuan, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 徐大川

    [Xu, Dachuan]Beijing Univ Technol, Beijing Inst Sci & Engn Comp, 100 Pingleyuan, Beijing 100124, Peoples R China

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Source :

JOURNAL OF COMBINATORIAL OPTIMIZATION

ISSN: 1382-6905

Year: 2019

Issue: 2

Volume: 37

Page: 439-453

1 . 0 0 0

JCR@2022

ESI Discipline: MATHEMATICS;

ESI HC Threshold:54

JCR Journal Grade:3

Cited Count:

WoS CC Cited Count: 17

SCOPUS Cited Count: 19

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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