On the additive constant of the k-server Work Function Algorithm

Yuval Emek; Pierre Fraigniaud; Amos Korman; Adi Rosén

doi:10.1016/j.ipl.2010.09.003

On the additive constant of the k-server Work Function Algorithm

Yuval Emek, Pierre Fraigniaud, Amos Korman, Adi Rosén

Research output: Contribution to journal › Article › peer-review

Abstract

We consider the Work Function Algorithm for the k-server problem (Chrobak and Larmore, 1991; Koutsoupias and Papadimitriou, 1995) [2,4]. We show that if the Work Function Algorithm is c-competitive, then it is also strictly (2c)-competitive. As a consequence of (Koutsoupias and Papadimitriou, 1995) [4] this also shows that the Work Function Algorithm is strictly (4k-2)-competitive.

Original language	English
Pages (from-to)	1120-1123
Number of pages	4
Journal	Information Processing Letters
Volume	110
Issue number	24
DOIs	https://doi.org/10.1016/j.ipl.2010.09.003
State	Published - 30 Nov 2010
Externally published	Yes

Keywords

On-line algorithms
k-server problem

ASJC Scopus subject areas

Theoretical Computer Science
Signal Processing
Information Systems
Computer Science Applications

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10.1016/j.ipl.2010.09.003

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abstract = "We consider the Work Function Algorithm for the k-server problem (Chrobak and Larmore, 1991; Koutsoupias and Papadimitriou, 1995) [2,4]. We show that if the Work Function Algorithm is c-competitive, then it is also strictly (2c)-competitive. As a consequence of (Koutsoupias and Papadimitriou, 1995) [4] this also shows that the Work Function Algorithm is strictly (4k-2)-competitive.",

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author = "Yuval Emek and Pierre Fraigniaud and Amos Korman and Adi Ros{\'e}n",

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AU - Fraigniaud, Pierre

AU - Korman, Amos

AU - Rosén, Adi

PY - 2010/11/30

Y1 - 2010/11/30

N2 - We consider the Work Function Algorithm for the k-server problem (Chrobak and Larmore, 1991; Koutsoupias and Papadimitriou, 1995) [2,4]. We show that if the Work Function Algorithm is c-competitive, then it is also strictly (2c)-competitive. As a consequence of (Koutsoupias and Papadimitriou, 1995) [4] this also shows that the Work Function Algorithm is strictly (4k-2)-competitive.

AB - We consider the Work Function Algorithm for the k-server problem (Chrobak and Larmore, 1991; Koutsoupias and Papadimitriou, 1995) [2,4]. We show that if the Work Function Algorithm is c-competitive, then it is also strictly (2c)-competitive. As a consequence of (Koutsoupias and Papadimitriou, 1995) [4] this also shows that the Work Function Algorithm is strictly (4k-2)-competitive.

KW - On-line algorithms

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ER -

On the additive constant of the k-server Work Function Algorithm

Abstract

Keywords

ASJC Scopus subject areas

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