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Find a Bug in MAENS
In carp/MAENS/operators.c line 826
The code as below:
Individual tmp_indi;
indi_copy(&tmp_indi, c);
//traditional move
lns(&tmp_indi, coef, 1, inst_tasks);
if (c->Fitness < tmp_indi.Fitness)
imp = 1;
if (c->TotalVioLoad == 0 && c->TotalCost < best_fsb_solution->TotalCost)
{
indi_copy(best_fsb_solution, c); // check if assign or not
}
According to the code, lns(&tmp_indi, coef, 1, inst_tasks)
is used to apply local search on chromosome tmp_indi
, and chromosome c
is the origin.
But the following code tends to compare chromosome c
and the best
chromosome. If chromosome c
is better than best
chromosome, then update best
chromosome.
So the correct code would be apply local search on chromosome c
.
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