Thomas Neidhart created MATH-1219:
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Summary: Improve performance of TournamentSelection for large
populations
Key: MATH-1219
URL: https://issues.apache.org/jira/browse/MATH-1219
Project: Commons Math
Issue Type: Improvement
Reporter: Thomas Neidhart
Attachments: MATH-1219.patch
The TournamentSelection can become quite slow when using large populations. The
implemented algorithm clones the original population and picks randomly some
chromosomes from it. Everytime a chromosome has been picked, it is also removed
from this population.
When assuming that the chosen arity << population size, it is usually faster to
repeat the picking.
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