Last change
on this file since 9449 was
6152,
checked in by bfarka, 14 years ago
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added ecj and custom statistics to communicate with the okb services #1441
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File size:
1.6 KB
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1 | /*
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2 | Copyright 2006 by Sean Luke
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3 | Licensed under the Academic Free License version 3.0
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4 | See the file "LICENSE" for more information
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5 | */
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6 |
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7 |
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8 | package ec;
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9 |
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10 | /*
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11 | * Breeder.java
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12 | *
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13 | * Created: Tue Aug 10 21:00:11 1999
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14 | * By: Sean Luke
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15 | */
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16 |
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17 | /**
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18 | * A Breeder is a singleton object which is responsible for the breeding
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19 | * process during the course of an evolutionary run. Only one Breeder
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20 | * is created in a run, and is stored in the EvolutionState object.
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21 | *
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22 | * <p>Breeders typically do their work by applying a Species' BreedingPipelines
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23 | * on subpopulations of that species to produce new individuals for those
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24 | * subpopulations.
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25 | *
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26 | * <p>Breeders may be multithreaded. The number of threads they may spawn
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27 | * (excepting a parent "gathering" thread) is governed by the EvolutionState's
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28 | * breedthreads value.
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29 | *
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30 | * <p>Be careful about spawning threads -- this system has no few synchronized
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31 | * methods for efficiency's sake, so you must either divvy up breeding in a
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32 | * thread-safe fashion and assume that all individuals
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33 | * in the current population are read-only (which you may assume for a generational
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34 | * breeder which needs to return a whole new population each generation), or
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35 | * otherwise you must obtain the appropriate locks on individuals in the population
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36 | * and other objects as necessary.
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37 | *
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38 | * @author Sean Luke
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39 | * @version 1.0
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40 | */
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41 |
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42 | public abstract class Breeder implements Singleton
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43 | {
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44 | /** Breeds state.population, returning a new population. In general,
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45 | state.population should not be modified. */
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46 |
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47 | public abstract Population breedPopulation(final EvolutionState state) ;
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48 | }
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