|
Last change
on this file since 1302 was
1185,
checked in by Maciej Komosinski, 2 years ago
|
|
Renamed a module; new name is "evolalg_steps"
|
|
File size:
1.1 KB
|
| Rev | Line | |
|---|
| [1113] | 1 | from collections import Iterable |
|---|
| 2 | |
|---|
| [1185] | 3 | from evolalg_steps.base.step import Step |
|---|
| [1113] | 4 | import copy |
|---|
| 5 | |
|---|
| [1185] | 6 | from evolalg_steps.base.union_step import UnionStep |
|---|
| [1113] | 7 | |
|---|
| 8 | |
|---|
| 9 | class StableGeneration(Step): |
|---|
| 10 | |
|---|
| 11 | def __init__(self, selection, steps, population_size=None): |
|---|
| 12 | self.selection = selection |
|---|
| 13 | self.steps = UnionStep(steps) |
|---|
| 14 | self.population_size = population_size |
|---|
| 15 | |
|---|
| 16 | def generate_new(self, population, missing_count): |
|---|
| 17 | selected = self.selection(population, missing_count) |
|---|
| 18 | selected = copy.deepcopy(selected) |
|---|
| 19 | selected = self.steps(selected) |
|---|
| 20 | return selected |
|---|
| 21 | |
|---|
| 22 | def init(self): |
|---|
| 23 | self.selection.init() |
|---|
| 24 | self.steps.init() |
|---|
| 25 | |
|---|
| 26 | def call(self, population): |
|---|
| 27 | population_size = self.population_size |
|---|
| 28 | if population_size is None: |
|---|
| 29 | population_size = len(population) |
|---|
| 30 | generated = [] |
|---|
| 31 | while len(generated) < population_size: |
|---|
| 32 | gen = self.generate_new(population, population_size - len(generated)) |
|---|
| 33 | if isinstance(gen, Iterable): |
|---|
| 34 | generated.extend(gen) |
|---|
| 35 | else: |
|---|
| 36 | generated.append(gen) |
|---|
| 37 | return generated[:len(population)] |
|---|
Note: See
TracBrowser
for help on using the repository browser.
