Reduction of fitness evaluations using clustering techniques and neural network ensembles
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United States of America Patent
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Apr 22, 2008
Grant Date -
Sep 22, 2005
app pub date -
Jan 24, 2005
filing date -
Jan 26, 2004
priority date (Note) -
Expired
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Abstract
The invention relates to an evolutionary optimization method. First, an initial population of individuals is set up and an original fitness function is applied. Then the offspring individuals having a high evaluated quality value as parents are selected. In a third step, the parents are reproduced to create a plurality of offspring individuals. The quality of the offspring individuals is evaluated selectively using an original fitness function or an approximate fitness function. Finally, the method returns to the selection step until a termination condition is met. The step of evaluating the quality of the offspring individuals includes grouping all offspring individuals in clusters, selecting for each cluster one or a plurality of offspring individuals, resulting in altogether selected offspring individuals, evaluating the selected offspring individuals by the original fitness function, and evaluating the remaining offspring individuals by means of the approximate fitness function.
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