Examples of org.uncommons.watchmaker.framework.TerminationCondition.shouldTerminate()

Package org.uncommons.watchmaker.framework

Class org.uncommons.watchmaker.framework.TerminationCondition

Examples of org.uncommons.watchmaker.framework.TerminationCondition.shouldTerminate()

org.uncommons.watchmaker.framework.TerminationCondition.shouldTerminate()
The condition is queried via this method to determine whether or not evolution should finish at the current point. @param populationData Information about the current state of evolution. This maybe used to determine whether evolution should continue or not. @return true if evolution should be terminated, false otherwise.

    @Test
    public void testFittestCandidateStagnation()
    {
        TerminationCondition stagnation = new Stagnation(2, true);
        PopulationData<Object> data = new PopulationData<Object>(new Object(), 2, 1, 0.1, true, 10, 0, 0, 1);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 1.8, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 2, 3);

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        TerminationCondition stagnation = new Stagnation(2, true);
        PopulationData<Object> data = new PopulationData<Object>(new Object(), 2, 1, 0.1, true, 10, 0, 0, 1);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 1.8, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 2, 3);
        assert stagnation.shouldTerminate(data) : "Stagnation should be triggered after 2 generations without improvement.";
    }

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        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 1.8, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 2, 3);
        assert stagnation.shouldTerminate(data) : "Stagnation should be triggered after 2 generations without improvement.";
    }


    @Test
    public void testFittestCandidateStagnationNonNatural()
    {

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    @Test
    public void testFittestCandidateStagnationNonNatural()
    {
        TerminationCondition stagnation = new Stagnation(2, false);
        PopulationData<Object> data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 0, 1);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2.2, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2, 1, 0.1, true, 10, 0, 2, 3);

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        TerminationCondition stagnation = new Stagnation(2, false);
        PopulationData<Object> data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 0, 1);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2.2, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2, 1, 0.1, true, 10, 0, 2, 3);
        assert stagnation.shouldTerminate(data) : "Stagnation should be triggered after 2 generations without improvement.";
    }

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        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2.2, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        // Best doesn't improve even though mean does.
        data = new PopulationData<Object>(new Object(), 2, 1, 0.1, true, 10, 0, 2, 3);
        assert stagnation.shouldTerminate(data) : "Stagnation should be triggered after 2 generations without improvement.";
    }




    @Test
    public void testPopulationMeanStagnation()

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    @Test
    public void testPopulationMeanStagnation()
    {
        TerminationCondition stagnation = new Stagnation(2, true, true);
        PopulationData<Object> data = new PopulationData<Object>(new Object(), 2, 1, 0.1, true, 10, 0, 0, 1);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve but mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve but mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 2, 3);

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        TerminationCondition stagnation = new Stagnation(2, true, true);
        PopulationData<Object> data = new PopulationData<Object>(new Object(), 2, 1, 0.1, true, 10, 0, 0, 1);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve but mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve but mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 2, 3);
        // Best has stagnated but mean hasn't so shouldn't terminate.
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Now we let the mean stagnate...and let the best candidate get fitter...

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        data = new PopulationData<Object>(new Object(), 2, 1.2, 0.1, true, 10, 0, 1, 2);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Best doesn't improve but mean does.
        data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 2, 3);
        // Best has stagnated but mean hasn't so shouldn't terminate.
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Now we let the mean stagnate...and let the best candidate get fitter...
        data = new PopulationData<Object>(new Object(), 2.1, 1.5, 0.1, true, 10, 0, 3, 4);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        data = new PopulationData<Object>(new Object(), 2.2, 1.5, 0.1, true, 10, 0, 4, 4);
        assert stagnation.shouldTerminate(data) : "Stagnation should be triggered after 2 generations without improvement.";

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        data = new PopulationData<Object>(new Object(), 2, 1.5, 0.1, true, 10, 0, 2, 3);
        // Best has stagnated but mean hasn't so shouldn't terminate.
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 2 more generations.";
        // Now we let the mean stagnate...and let the best candidate get fitter...
        data = new PopulationData<Object>(new Object(), 2.1, 1.5, 0.1, true, 10, 0, 3, 4);
        assert !stagnation.shouldTerminate(data) : "Stagnation should not be triggered for at least 1 more generation.";
        data = new PopulationData<Object>(new Object(), 2.2, 1.5, 0.1, true, 10, 0, 4, 4);
        assert stagnation.shouldTerminate(data) : "Stagnation should be triggered after 2 generations without improvement.";
    }

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