A tale of two methods

Reuven Bar-Yehuda, Dror Rawitz

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

4 Scopus citations


We describe two widely used methods for the design and analysis of approximation algorithms, the primal-dual schema and the local ratio technique. We focus on the creation of both methods by revisiting two results by Bar-Yehuda and Even-the linear time primal-dual approximation algorithm for set cover, and its local ratio interpretation. We also follow the evolution of the two methods by discussing more recent studies.

Original languageEnglish
Title of host publicationTheoretical Computer Scienc - Essays in Memory of Shimon Even
PublisherSpringer Verlag
Number of pages22
ISBN (Print)3540328807, 9783540328803
StatePublished - 2006
Externally publishedYes

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3895 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


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