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Selection

In the Comparison of Genetic Operators For Solving the Traveling Salesman Problem: Selection

In comparing selection methods, for the sake of comparison it was in our best interest to leave the least to randomness except in the selection method. The mutation method was the center inverse mutation throughout all the trials and a center mutation point was chosen every time. The cutoff percentage was the same (30%) for each trial and the number of generations was a fixed 5000.

The numbers displayed below are the average of 10 trials conducted with the same input graph but a different initial population for each trial.Selection Comparison

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Genetic Algorithm: Selection

In every generation, a selection agent comes to play which sifts out the fit chromosomes from the unfit chromosomes. The selection agent “kills off” a user specified percentage of organisms in the population.However, it is under the discretion of the selection agent in determining which chromosomes to kill. As mentioned earlier, fitness is defined by having the lowest weight in the circumstances put forth by the TSP. However selection may not necessarily be only off of that. This can be seen when comparing the two most prevalent types of selection operators:
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