English

On Classes of Functions for which No Free Lunch Results Hold

Neural and Evolutionary Computing 2007-05-23 v1 Optimization and Control Adaptation and Self-Organizing Systems

Abstract

In a recent paper it was shown that No Free Lunch results hold for any subset F of the set of all possible functions from a finite set X to a finite set Y iff F is closed under permutation of X. In this article, we prove that the number of those subsets can be neglected compared to the overall number of possible subsets. Further, we present some arguments why problem classes relevant in practice are not likely to be closed under permutation.

Keywords

Cite

@article{arxiv.cs/0108011,
  title  = {On Classes of Functions for which No Free Lunch Results Hold},
  author = {Christian Igel and Marc Toussaint},
  journal= {arXiv preprint arXiv:cs/0108011},
  year   = {2007}
}

Comments

8 pages, 1 figure, see http://www.neuroinformatik.ruhr-uni-bochum.de/