/// <summary>
/// 变异
/// </summary>
/// <param name="session"></param>
/// <returns></returns>
public NWSEGenome mutate(Session session)
{
NWSEGenome genome = this.clone();
genome.generation = session.Generation;
//若有效基因库不空，生成有效基因
List <NodeGene> vaildGenes = genome.validInferenceGenes;
if (vaildGenes != null && vaildGenes.Count > 0)
{
foreach (NodeGene g in vaildGenes)
{
if (genome.exist(g.Id))
{
continue;
}
genome.put(g.clone <NodeGene>());
}
}
//添加一个处理器
List <NodeGene> inputGenes = null;
HandlerGene newHandleGene = null;
int maxcount = 8;
if (rng.NextDouble() < Session.config.evolution.mutate.newHandleGeneProb)
{
int num = 0;
while (++num <= maxcount)
{
//随机选择处理器
double[] handler_selection_prob = Session.GetConfiguration().evolution.mutate.Handlerprob.ToArray();
Configuration.Handler cHandler = Session.GetConfiguration().random_handler(handler_selection_prob);
//选择感知组
List <String> cataories = genome.GetAllCataory("rotate");
String cataory = cataories[rng.Next(0, cataories.Count)];
inputGenes = genome.GetAllInputGenes(cataory);
inputGenes.shuffle();
//确定输入数
int inputcount = rng.Next(cHandler.mininputcount, cHandler.maxinputcount + 1);
if (inputGenes.Count < inputcount)
{
continue;
}
//确定输入
List <int> inputids = new List <int>();
for (int i = 0; i < inputcount; i++)
{
inputids.Add(inputGenes[i].Id);
}
//生成
double[] ps = cHandler.randomParam();
HandlerGene g = new HandlerGene(genome, cHandler.name, inputids, ps);
g.Generation = session.Generation;
g.Cataory = inputGenes[0].Cataory;
g.Group = inputGenes[0].Group;
g.sortInput();
g.Id = session.GetIdGenerator().getGeneId(g);
if (genome.exist(g.Id))
{
continue;
}
newHandleGene = g;
genome.handlerGenes.Add(newHandleGene);
session.triggerEvent(Session.EVT_LOG, "A new handler gene is produced in " + genome.id.ToString() + ":" + newHandleGene.Text);
break;
}
}
//如果生成了新hanler，生成后置变量
InferenceGene inf = null;
if (newHandleGene != null)
{
List <int> conditions = new List <int>();
List <int> variables = new List <int>();
int timediff = 1;
variables.Add(newHandleGene.Id);
List <ReceptorGene> actionSensorGenes = genome.getActionSensorGenes();
for (int i = 0; i < actionSensorGenes.Count; i++)
{
conditions.Add(actionSensorGenes[i].Id);
}
inf = new InferenceGene(genome, timediff, conditions, variables);
inf.Cataory = newHandleGene.Cataory;
inf.Generation = session.Generation;
inf.Id = Session.idGenerator.getGeneId(inf);
genome.inferenceGenes.Add(inf);
session.triggerEvent(Session.EVT_LOG, "A inference gene is added in " + genome.id.ToString() + ":" + inf.Text);
}
//选择需要变异的推理节点(按照可靠度排序，可靠度越小变异概率越大)
List <InferenceGene> infGenes = genome.inferenceGenes.FindAll(g => g.reability <= 0.5);
if (infGenes == null || infGenes.Count <= 0)
{
infGenes = genome.inferenceGenes.FindAll(g => g.reability <= 0.98);
}
//没有需要变异的推理节点
inputGenes = genome.GetAllInputGenes(null);
int mutateinfcount = 0;
double infMutateProb = Session.config.evolution.mutate.infMutateProb;
double infMutateAddProb = Session.config.evolution.mutate.infMutateAddProb;
double infMutateRemoveProb = Session.config.evolution.mutate.infMutateRemoveProb;
for (int i = 0; i < infGenes.Count; i++)
{
if (rng.NextDouble() >= infMutateProb)
{
continue;
}
inf = infGenes[i].clone <InferenceGene>();
inf.owner = genome;
int oldinfid = inf.Id;
String prevText = inf.Text;
List <int> condIds = inf.conditions;
int num = 0;
maxcount = 5;
while (++num <= maxcount)
{
//删除
if (condIds.Count > 2 && (condIds.Count == inputGenes.Count || rng.NextDouble() <= infMutateRemoveProb))
{
condIds = inf.conditions.FindAll(c => !genome[c].IsActionSensor());
int index = rng.Next(0, condIds.Count);
inf.conditions.RemoveAt(index);
if (Session.IsInvaildGene(inf))
{
inf = infGenes[i].clone <InferenceGene>(); inf.owner = genome; continue;
}
inf.Id = Session.idGenerator.getGeneId(inf);
genome.replaceGene(oldinfid, inf);
mutateinfcount += 1;
session.triggerEvent(Session.EVT_LOG, "conditions of inference gene is removed(" + genome.id.ToString() + "):" + prevText + "--->" + inf.Text);
break;
}
//添加
else if (condIds.Count < inputGenes.Count && rng.NextDouble() <= infMutateAddProb)
{
List <NodeGene> temp = inputGenes.FindAll(g => !condIds.Contains(g.Id));
int index = rng.Next(0, temp.Count);
inf.conditions.Add(temp[index].Id);
inf.Sortdimension();
if (Session.IsInvaildGene(inf))
{
inf = infGenes[i].clone <InferenceGene>(); inf.owner = genome; continue;
}
inf.Id = Session.idGenerator.getGeneId(inf);
genome.replaceGene(oldinfid, inf);
mutateinfcount += 1;
session.triggerEvent(Session.EVT_LOG, "conditions of inference gene is added(" + genome.id.ToString() + "):" + prevText + "--->" + inf.Text);
break;
}
else //修改
{
condIds = inf.conditions.FindAll(c => !genome[c].IsActionSensor());
if (condIds.Count <= 0)
{
continue;
}
int index1 = rng.Next(0, condIds.Count);
List <NodeGene> temp = inputGenes.FindAll(g => !condIds.Contains(g.Id) || g.Id != condIds[index1]);
int index2 = rng.Next(0, temp.Count);
inf.conditions[index1] = temp[index2].Id;
inf.Sortdimension();
if (Session.IsInvaildGene(inf))
{
inf = infGenes[i].clone <InferenceGene>(); inf.owner = genome; continue;
}
inf.Id = Session.idGenerator.getGeneId(inf);
genome.replaceGene(oldinfid, inf);
mutateinfcount += 1;
session.triggerEvent(Session.EVT_LOG, "conditions of inference gene is modified(" + genome.id.ToString() + "):" + prevText + "--->" + inf.Text);
break;
}
}
}
genome.computeNodeDepth();
genome.id = Session.idGenerator.getGenomeId();
return(genome);
}