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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Evolutionary-algorithm/J/evolutionary-algorithm-1.j Normal file
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CHARSET=: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ '
NPROG=: 100 NB. number of progeny (C)
MRATE=: 0.05 NB. mutation rate
create =: (?@$&$ { ])&CHARSET NB. creates random list from charset of same shape as y
fitness =: +/@:~:"1
copy =: # ,:
mutate =: &(>: $ ?@$ 0:)(`(,: create))} NB. adverb
select =: ] {~ (i. <./)@:fitness NB. select fittest member of population
nextgen =: select ] , [: MRATE mutate NPROG copy ]
while =: conjunction def '(] , (u {:))^:(v {:)^:_ ,:'
evolve=: nextgen while (0 < fitness) create