|
Last change
on this file since 1139 was
1139,
checked in by Maciej Komosinski, 4 years ago
|
|
Added --debug mode that prints names of steps; final multiple evaluation now evaluates genotypes in hall of fame instead of the last population
|
|
File size:
653 bytes
|
| Line | |
|---|
| 1 | from evolalg.base.individual import Individual |
|---|
| 2 | from typing import List |
|---|
| 3 | import random |
|---|
| 4 | |
|---|
| 5 | from evolalg.base.step import Step |
|---|
| 6 | from evolalg.selection.selection import Selection |
|---|
| 7 | |
|---|
| 8 | |
|---|
| 9 | class TournamentSelection(Selection): |
|---|
| 10 | def __init__(self, tournament_size: int, fit_attr="fitness", copy=False, *args, **kwargs): |
|---|
| 11 | super(TournamentSelection, self).__init__(copy, *args, **kwargs) |
|---|
| 12 | self.tournament_size = tournament_size |
|---|
| 13 | self.fit_attr = fit_attr |
|---|
| 14 | |
|---|
| 15 | def select_next(self, population): |
|---|
| 16 | selected = [random.choice(population) for i in range(self.tournament_size)] |
|---|
| 17 | return max(selected, key=lambda x: getattr(x, self.fit_attr)) |
|---|
Note: See
TracBrowser
for help on using the repository browser.
