public void TestNeuronGene_ToJSON()
{
var neuronGene = new NeuronGene(3, NeuronType.HiddenNeuron, 0.1f, 0.2f, 0.3f, 0.4f, 0.0f, 1.0f);
var json = JSON.Serialize(neuronGene.ToJSON());
var expected = "{\"innovation\":3,\"type\":4,\"mean\":0.5,\"sigma\":0,\"a\":0.1,\"b\":0.2,\"c\":0.3,\"d\":0.4}";
Assert.AreEqual(expected, json);
}
public NeuronGene(NeuronGene other)
{
this.type = other.type;
this.innovationId = other.innovationId;
this.a = other.a;
this.b = other.b;
this.c = other.c;
this.d = other.d;
this.mean = other.mean;
this.sigma = other.sigma;
}
public void TestNeuronGene()
{
var neuronGene = new NeuronGene(3, NeuronType.HiddenNeuron, 0.1f, 0.2f, 0.3f, 0.4f, 0.0f, 1.0f);
Assert.AreEqual(neuronGene.InnovationId, 3);
Assert.AreEqual(neuronGene.a, 0.1f);
Assert.AreEqual(neuronGene.b, 0.2f);
Assert.AreEqual(neuronGene.c, 0.3f);
Assert.AreEqual(neuronGene.d, 0.4f);
var neuronGeneRand = NeuronGene.FromPrototype(neuronGene);
Assert.AreEqual(neuronGeneRand.InnovationId, 3);
Assert.AreNotEqual(neuronGeneRand.a, neuronGene.a);
Assert.AreNotEqual(neuronGeneRand.b, neuronGene.b);
Assert.AreNotEqual(neuronGeneRand.c, neuronGene.c);
Assert.AreNotEqual(neuronGeneRand.d, neuronGene.d);
}
public void Mutate(Genotype genotype, MutationResults results)
{
var neuronIndexA = Random.Range(0, genotype.NeuronCount);
var neuronGeneA = genotype.NeuronGenes.ElementAt(neuronIndexA);
var candidates = new List <NeuronGene>(genotype.NeuronGenes);
candidates.Shuffle();
NeuronGene neuronGeneB = default(NeuronGene);
bool foundNeuron = false;
for (var i = 0; i < candidates.Count; i++)
{
neuronGeneB = candidates[i];
var exists = genotype.SynapseGenes.Any(s =>
neuronGeneA.InnovationId == s.fromNeuronId &&
neuronGeneB.InnovationId == s.toNeuronId);
if (!exists)
{
foundNeuron = true;
break;
}
}
if (foundNeuron)
{
var synapseInnovationId = innovations.GetSynapseInnovationId(neuronGeneA.InnovationId, neuronGeneB.InnovationId);
var synapseGene = new SynapseGene(synapseInnovationId, neuronGeneA.InnovationId, neuronGeneB.InnovationId, true);
var synapseGenes = new GeneList <SynapseGene>(genotype.SynapseGenes);
synapseGenes.Add(synapseGene);
genotype.SynapseGenes = synapseGenes;
results.addedSynapses += 1;
}
}
public static NeuronGene FromPrototype(NeuronGene other)
{
return(NeuronGene.Random(other.InnovationId));
}
public void TestInnovationCollection()
{
var innovations = new InnovationCollection();
// Make sure innovation ids are ascending
var a = innovations.GetInitialNeuronInnovationId(0);
var b = innovations.GetInitialNeuronInnovationId(1);
var c = innovations.GetInitialNeuronInnovationId(2);
Assert.That(a == 0);
Assert.That(b == 1);
Assert.That(c == 2);
var sA = innovations.GetSynapseInnovationId(a, b);
var sB = innovations.GetSynapseInnovationId(b, c);
var sC = innovations.GetSynapseInnovationId(c, a);
Assert.That(sA == 3);
Assert.That(sB == 4);
Assert.That(sC == 5);
var d = innovations.GetNeuronInnovationId(a, b, sA);
var e = innovations.GetNeuronInnovationId(b, c, sB);
var f = innovations.GetNeuronInnovationId(c, d, sC);
Assert.That(d == 6);
Assert.That(e == 8);
Assert.That(f == 10);
// Make sure duplicate innovations receive their original innovation id
var a0 = innovations.GetInitialNeuronInnovationId(0);
var b0 = innovations.GetInitialNeuronInnovationId(1);
var c0 = innovations.GetInitialNeuronInnovationId(2);
Assert.That(a0 == 0);
Assert.That(b0 == 1);
Assert.That(c0 == 2);
var sA0 = innovations.GetSynapseInnovationId(a0, b0);
var sB0 = innovations.GetSynapseInnovationId(b0, c0);
var sC0 = innovations.GetSynapseInnovationId(c0, a0);
Assert.That(sA0 == 3);
Assert.That(sB0 == 4);
Assert.That(sC0 == 5);
var d0 = innovations.GetNeuronInnovationId(a0, b0, sA0);
var e0 = innovations.GetNeuronInnovationId(b0, c0, sB0);
var f0 = innovations.GetNeuronInnovationId(c0, d0, sC0);
Assert.That(d0 == 6);
Assert.That(e0 == 8);
Assert.That(f0 == 10);
// Test prune
var genotypes = Enumerable.Range(0, 3).Select(_0 => {
var neuronGeneA = new NeuronGene(a, NeuronType.HiddenNeuron);
var neuronGeneB = new NeuronGene(b, NeuronType.HiddenNeuron);
var synapseGeneA = new SynapseGene(sA, a, b, true);
var synapseGeneB = new SynapseGene(sB, b, c, true);
var neuronGenes = new [] { neuronGeneA, neuronGeneB }.ToGeneList();
var synapseGenes = new [] { synapseGeneA, synapseGeneB }.ToGeneList();
return(new Genotype(neuronGenes, synapseGenes));
}).ToList();
var prunedCount = innovations.Prune(genotypes);
Assert.That(innovations.Count == 4);
Assert.That(prunedCount == 5);
}
public static NeuronGene FromPrototype(NeuronGene other)
{
return NeuronGene.Random(other.InnovationId);
}
public void TestInnovationCollection()
{
var innovations = new InnovationCollection();
// Make sure innovation ids are ascending
var a = innovations.GetInitialNeuronInnovationId(0);
var b = innovations.GetInitialNeuronInnovationId(1);
var c = innovations.GetInitialNeuronInnovationId(2);
Assert.That(a == 0);
Assert.That(b == 1);
Assert.That(c == 2);
var sA = innovations.GetSynapseInnovationId(a, b);
var sB = innovations.GetSynapseInnovationId(b, c);
var sC = innovations.GetSynapseInnovationId(c, a);
Assert.That(sA == 3);
Assert.That(sB == 4);
Assert.That(sC == 5);
var d = innovations.GetNeuronInnovationId(a, b, sA);
var e = innovations.GetNeuronInnovationId(b, c, sB);
var f = innovations.GetNeuronInnovationId(c, d, sC);
Assert.That(d == 6);
Assert.That(e == 8);
Assert.That(f == 10);
// Make sure duplicate innovations receive their original innovation id
var a0 = innovations.GetInitialNeuronInnovationId(0);
var b0 = innovations.GetInitialNeuronInnovationId(1);
var c0 = innovations.GetInitialNeuronInnovationId(2);
Assert.That(a0 == 0);
Assert.That(b0 == 1);
Assert.That(c0 == 2);
var sA0 = innovations.GetSynapseInnovationId(a0, b0);
var sB0 = innovations.GetSynapseInnovationId(b0, c0);
var sC0 = innovations.GetSynapseInnovationId(c0, a0);
Assert.That(sA0 == 3);
Assert.That(sB0 == 4);
Assert.That(sC0 == 5);
var d0 = innovations.GetNeuronInnovationId(a0, b0, sA0);
var e0 = innovations.GetNeuronInnovationId(b0, c0, sB0);
var f0 = innovations.GetNeuronInnovationId(c0, d0, sC0);
Assert.That(d0 == 6);
Assert.That(e0 == 8);
Assert.That(f0 == 10);
// Test prune
var genotypes = Enumerable.Range(0, 3).Select(_0 => {
var neuronGeneA = new NeuronGene(a, NeuronType.HiddenNeuron);
var neuronGeneB = new NeuronGene(b, NeuronType.HiddenNeuron);
var synapseGeneA = new SynapseGene(sA, a, b, true);
var synapseGeneB = new SynapseGene(sB, b, c, true);
var neuronGenes = new []{neuronGeneA, neuronGeneB}.ToGeneList();
var synapseGenes = new []{synapseGeneA, synapseGeneB}.ToGeneList();
return new Genotype(neuronGenes, synapseGenes);
}).ToList();
var prunedCount = innovations.Prune(genotypes);
Assert.That(innovations.Count == 4);
Assert.That(prunedCount == 5);
}