Modeling Building Block Interdependency
Modeling Building Block Interdependency
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.
97-106
Watson, Richard A.
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Hornby, Gregory S.
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Pollack, Jordan B.
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Eiben, A. E.
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Back, T.
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Schoenauer, M.
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Schweffel, H.-B.
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1998
Watson, Richard A.
ce199dfc-d5d4-4edf-bd7b-f9e224c96c75
Hornby, Gregory S.
4f640e8d-45f6-4229-abd1-948a9101dae4
Pollack, Jordan B.
9ec3d634-1257-4bdc-b7d7-7d1aad22faf4
Eiben, A. E.
c89e3cd0-8c65-48a0-8a6c-7b61a07a9682
Back, T.
8a0710c1-351a-4161-99b5-700da0ea558f
Schoenauer, M.
8b1459b1-2942-440b-84b6-20a7b2c568c6
Schweffel, H.-B.
ef7a51c1-0005-4e18-a062-7a81a3b87c0e
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), .
Abstract
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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watson_mbbi_ppsn_1998.pdf
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Published date: 1998
Organisations:
Agents, Interactions & Complexity
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Local EPrints ID: 262013
URI: http://eprints.soton.ac.uk/id/eprint/262013
PURE UUID: 62b30da8-9714-46a6-b483-8aa7ae8d4e46
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Date deposited: 21 Feb 2006
Last modified: 15 Mar 2024 03:21
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Contributors
Author:
Richard A. Watson
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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