Simpler 3/4-approximation algorithms for MAX SAT

  • Authors:
  • Anke van Zuylen

  • Affiliations:
  • Max Planck Institute for Informatics, Saarbücken, Germany

  • Venue:
  • WAOA'11 Proceedings of the 9th international conference on Approximation and Online Algorithms
  • Year:
  • 2011

Quantified Score

Hi-index 0.00

Visualization

Abstract

We consider the recent randomized 3/4-algorithm for MAX SAT of Poloczek and Schnitger. We give a much simpler set of probabilities for setting the variables to true or false, which achieve the same expected performance guarantee. Our algorithm suggests a conceptually simple way to get a deterministic algorithm: rather than comparing to an unknown optimal solution, we instead compare the algorithm's output to the optimal solution of an LP relaxation. This gives rise to a new LP rounding algorithm, which also achieves a performance guarantee of 3/4.