Online bin packing with resource augmentation

  • Authors:

  • Leah Epstein;Rob Van Stee

  • Affiliations:

  • School of Computer Science, The Interdisciplinary Center, Herzliya, Israel;Department of Computer Science, University of Karlsruhe, D-76128 Karlsruhe, Germany

  • Venue:
  • Discrete Optimization
  • Year:
  • 2007

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Abstract

In competitive analysis, we usually do not put any restrictions on the computational complexity of online algorithms, although efficient algorithms are preferred. Thus, if such an algorithm were given the entire input in advance, it could give an optimal solution (in exponential time). Instead of giving the algorithm more knowledge about the input, in this paper we consider the effects of giving an online bin packing algorithm larger bins than the offline algorithm it is compared to. We give new algorithms for this problem that combine items in bins in an unusual way, and give bounds on their performance which improve upon the best possible bounded space algorithm. We also give general lower bounds for this problem which are nearly matching for bin sizes b=2.