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Modeling Building Block Interdependency

Watson, Richard A., Hornby, Gregory S. and Pollack, Jordan B., Eiben, A. E., Back, T., Schoenauer, M. and Schweffel, H.-B.(eds.) (1998) Modeling Building Block Interdependency Proceedings of Parallel Problem Solving from Nature V (PPSN V), pp. 97-106.

Record type: Article


The Building-Block Hypothesis appeals to the notion of problem decomposition and the assembly of solutions from sub-solutions. Accordingly, there have been many varieties of GA test problems with a structure based on building-blocks. Many of these problems use deceptive fitness functions to model interdependency between the bits within a block. However, very few have any model of interdependency between building-blocks; those that do are not consistent in the type of interaction used intra-block and inter-block. This paper discusses the inadequacies of the various test problems in the literature and clarifies the concept of building-block interdependency. We formulate a principled model of hierarchical interdependency that can be applied through many levels in a consistent manner and introduce Hierarchical If-and-only-if (H-IFF) as a canonical example. We present some empirical results of GAs on H-IFF showing that if population diversity is maintained and linkage is tight then the GA is able to identify and manipulate building-blocks over many levels of assembly, as the Building-Block Hypothesis suggests.

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Published date: 1998
Organisations: Agents, Interactions & Complexity


Local EPrints ID: 262013
PURE UUID: 62b30da8-9714-46a6-b483-8aa7ae8d4e46

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Date deposited: 21 Feb 2006
Last modified: 18 Jul 2017 08:56

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Author: Gregory S. Hornby
Author: Jordan B. Pollack
Editor: A. E. Eiben
Editor: T. Back
Editor: M. Schoenauer
Editor: H.-B. Schweffel

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