Experimental Comparison of Approximation Algorithms for Scheduling Unrelated Parallel Machines

  • Authors:
  • Tjark Vredeveld;Cor Hurkens

  • Affiliations:
  • -;-

  • Venue:
  • INFORMS Journal on Computing
  • Year:
  • 2002

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Abstract

This paper presents an empirical comparison of polynomial-time approximation algorithms and local search heuristics for the problem of minimizing total weighted completion time on unrelated parallel machines. Algorithms with a worst-case performance guarantee are based on rounding a fractional solution to an LP-relaxation or to a convex quadratic-programming relaxation. We also investigate dominance relations among the lower bounds resulting from these relaxations.