A network flow implementation of a modified work function algorithm for solving the k-server problem

被引:0
作者
Baumgartner, Alfonzo [1 ]
Manger, Robert [2 ]
Hocenski, Zeljko [3 ]
机构
[1] Univ Osijek, Fac Elect Engn, Kneza Trpimira 2b, Osijek 31000, Croatia
[2] Univ Zagreb, Dept Math, Zagreb 10000, Croatia
[3] Univ Osijek, Fac Elect Engn, Osijek 31000, Croatia
来源
SOR'07: PROCEEDINGS OF THE 9TH INTERNATIONAL SYMPOSIUM ON OPERATIONAL RESEARCH IN SLOVENIA | 2007年
关键词
on-line problems; on-line algorithms; the k-server problem; the work function algorithm (WFA); moving windows; implementation; network flows; computational complexity;
D O I
暂无
中图分类号
TP31 [计算机软件];
学科分类号
081202 ; 0835 ;
摘要
We study a modification of the well known work function algorithm (WFA) for solving the on-line k-server problem. Our modified WFA is based on a moving window, i.e. on the approximate work function that takes into account only a fixed number of most recent on-line requests. In this paper we describe in detail a network flow implementation of the modified WFA. We also present theoretical estimates and experimental measurements dealing with the computational complexity of the implemented algorithm.
引用
收藏
页码:83 / +
页数:2
相关论文
共 11 条
  • [1] [Anonymous], 2004, LINEAR PROGRAMMING N
  • [2] On the competitive ratio of the work function algorithm for the k-server problem
    Bartal, Y
    Koutsoupias, E
    [J]. THEORETICAL COMPUTER SCIENCE, 2004, 324 (2-3) : 337 - 345
  • [3] BAUMGARTNER A, 2007, P 29 C INF TECHN INT
  • [4] NEW RESULTS ON SERVER PROBLEMS
    CHROBAK, M
    KARLOFF, H
    PAYNE, T
    VISHWANATHAN, S
    [J]. SIAM JOURNAL ON DISCRETE MATHEMATICS, 1991, 4 (02) : 172 - 181
  • [5] IRANI S, 1997, APPROXIMATION ALGORI, P521
  • [6] Jungnickel D., 2005, Graphs, Networks and Algorithms
  • [7] Koutsoupias E., 1994, Proceedings of the Twenty-Sixth Annual ACM Symposium on the Theory of Computing, P507, DOI 10.1145/195058.195245
  • [8] COMPETITIVE ALGORITHMS FOR SERVER PROBLEMS
    MANASSE, MS
    MCGEOCH, LA
    SLEATOR, DD
    [J]. JOURNAL OF ALGORITHMS, 1990, 11 (02) : 208 - 230
  • [9] Quinn M.J., 2003, Parallel Programming in C with MPI and OpenMP
  • [10] RUDEC T, 2001, THESIS U ZABREB