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2011

Approximating the distribution of fitness over hamming regions

13 years 3 months ago
Approximating the distribution of fitness over hamming regions
The distribution of fitness values across a set of states sharply influences the dynamics of evolutionary processes and heuristic search in combinatorial optimization. In this paper we present a method for approximating the distribution of fitness values over Hamming regions by solving a linear programming problem that incorporates low order moments of the target function. These moments can be retrieved in polynomial time for select problems such as MAX-k-SAT using Walsh analysis. The method is applicable to any real function on binary strings that is epistatically bounded and discrete with asymptotic bounds on the cardinality of its codomain. We perform several studies on the ONE-MAX and MAXk-SAT domains to assess the accuracy of the approximation and its dependence on various factors. We show that the approximation can accurately predict the number of states within a Hamming region that have an improving fitness value. Categories and Subject Descriptors I.2.8 [Artificial Intell...
Andrew M. Sutton, Darrell Whitley, Adele E. Howe
Added 28 Aug 2011
Updated 28 Aug 2011
Type Journal
Year 2011
Where FOGA
Authors Andrew M. Sutton, Darrell Whitley, Adele E. Howe
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