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Ingy döt Net 2026-02-01 16:33:20 -08:00
parent 5150844a7d
commit 4bb20c9b71
7735 changed files with 38060 additions and 199180 deletions
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24
Task/Evolutionary-algorithm/Prolog/evolutionary-algorithm.pro
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@ -1,7 +1,7 @@
target("METHINKS IT IS LIKE A WEASEL").
rndAlpha(64, 32). % Generate a single random character
rndAlpha(P, P). % 32 is a space, and 65->90 are upper case
rndAlpha(P, P). % 32 is a space, and 65->90 are upper case
rndAlpha(Ch) :- random(N), P is truncate(64+(N*27)), !, rndAlpha(P, Ch).
rndTxt(0, []). % Generate some random text (fixed length)
@ -17,16 +17,16 @@ mutate(P, [H|Txt], [H|Mut]) :- random(R), R < P, !, mutate(P, Txt, Mut).
mutate(P, [_|Txt], [M|Mut]) :- rndAlpha(M), !, mutate(P, Txt, Mut).
weasel(Tries, _, _, mutation(0, Result)) :- % No differences=success
format('~w~4|:~w~3| - ~s\n', [Tries, 0, Result]).
weasel(Tries, Chance, Target, mutation(S, Value)) :- % output progress
format('~w~4|:~w~3| - ~s\n', [Tries, S, Value]), !, % and call again
weasel(Tries, Chance, Target, Value).
format('~w~4|:~w~3| - ~s\n', [Tries, 0, Result]).
weasel(Tries, Chance, Target, mutation(S, Value)) :- % output progress
format('~w~4|:~w~3| - ~s\n', [Tries, S, Value]), !, % and call again
weasel(Tries, Chance, Target, Value).
weasel(Tries, Chance, Target, Start) :-
findall(mutation(S,M), % Generate 30 mutations, select the best.
(between(1, 30, _), mutate(Chance, Start, M), score(M,S,Target)),
Mutations), % List of 30 mutations and their scores
sort(Mutations, [Best|_]), succ(Tries, N),
!, weasel(N, Chance, Target, Best).
findall(mutation(S,M), % Generate 30 mutations, select the best.
(between(1, 30, _), mutate(Chance, Start, M), score(M,S,Target)),
Mutations), % List of 30 mutations and their scores
sort(Mutations, [Best|_]), succ(Tries, N),
!, weasel(N, Chance, Target, Best).
weasel :- % Chance->probability for a mutation, T=Target, Start=initial text
target(T), length(T, Len), rndTxt(Len, Start), Chance is 1 - (1/(Len+1)),
!, weasel(0, Chance, T, Start).
target(T), length(T, Len), rndTxt(Len, Start), Chance is 1 - (1/(Len+1)),
!, weasel(0, Chance, T, Start).