Work Function Algorithm with a Moving Window for Solving the On-Line k-Server Problem

We consider 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. The main motivation f...

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Bibliographic Details
Published in:Proceedings of the ITI 2007 : 29th International Conference on Information Technology Interfaces : ITI 2007 : June 25-28, 2007, Cavtat/Dubrovnik, Croatia pp. 591 - 596
Main Authors: Baumgartner, A., Manger, R., Hocenski, Z.
Format: Conference Proceeding
Language:English
Published: Zagreb IEEE 01.06.2007
University Computing Centre
Subjects:
Algorithmics. Computability. Computer arithmetics
Applied sciences
Approximation algorithms
Computational complexity
Computer science; control theory; systems
Computer systems and distributed systems. User interface
Cost function
Decision making
Degradation
Exact sciences and technology
experiments
Gain control
Information technology
Mathematics
moving windows
on-line algorithms
on-line problems
Optimized production technology
Software
the k-server problem
the work function algorithm (WFA)
Theoretical computing
K server problem
Computational complexity
Distributed system
ISBN:9537138097, 9789537138097
ISSN:1330-1012
Online Access:Get full text
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Summary:We consider 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. The main motivation for using a moving window is to gain control over the prohibitive computational complexity imposed by the original algorithm. Experimental results are presented, where the performance of the modified WFA has been compared vs. the original WFA.
ISBN:9537138097
9789537138097
ISSN:1330-1012
DOI:10.1109/ITI.2007.4283838