private static Expression CreateAssignment(GeneLink b, int i,
Func <string, Expression, Expression> accumulatorFunc)
{
Expression ass;
var from = Formater.FormatParameter(b.From, i);
var to = Formater.FormatParameter(b.To, i + 1);
if (b.IsPositive)
{
//ass = new Assignment(b.To,
// new Variable(b.From));
ass = accumulatorFunc.Invoke(to, new Variable(from));
}
else
{
ass = accumulatorFunc.Invoke(to,
new PrimitiveApplication(
PrimitiveApplication.AND, new PrimitiveApplication(nOT, new Variable(from))));
//ass = new PrimitiveApplication(PrimitiveApplication.EQUAL,
// new Variable(to),
// new PrimitiveApplication(
// PrimitiveApplication.AND, new PrimitiveApplication(nOT, new Variable(from))));
}
return(ass);
}
public Genome copy()
{
/*
* int nrInput = this.nodes[0].Count;
* int nrOutput = this.nodes[this.nrLayers - 1].Count;
* int[] nrHiddenNodes = new int[this.nrHiddenLayers];
*/
int[] layers = new int[nrLayers];
for (int i = 0; i < this.nodes.Count; i++)
{
layers[i] = this.nodes[i].Count;
}
/*
* for (int i = 0; i < this.nrHiddenLayers; i++)
* {
* nrHiddenNodes[i] = this.nodes[i + 1].Count;
* }
*/
//Genome copy = new Genome(nrInput, nrHiddenNodes, nrOutput);
Genome copy = new Genome(layers);
// copy all nodes
for (int i = 0; i < this.nrLayers; i++)
{
for (int j = 0; j < this.nodes[i].Count; j++)
{
GeneNode nodeCopy = copy.nodes[i][j];
GeneNode nodeOriginal = this.nodes[i][j];
nodeCopy.bias = nodeOriginal.bias;
nodeCopy.id = nodeOriginal.id;
// value should always be zero. it is only used for calculating the feed through it
//nodeCopy.value = nodeOriginal.value;
}
}
// copy all links
for (int i = 0; i < this.nrLayers - 1; i++)
{
for (int j = 0; j < this.links[i].Count; j++)
{
GeneLink linkCopy = copy.links[i][j];
GeneLink linkOriginal = this.links[i][j];
linkCopy.in_layer = linkOriginal.in_layer;
linkCopy.in_place = linkOriginal.in_place;
linkCopy.out_layer = linkOriginal.out_layer;
linkCopy.out_place = linkOriginal.out_place;
linkCopy.weight = linkOriginal.weight;
}
}
return(copy);
}
private void feedForwardFrom(int fromLayer)
{
for (int i = 0; i < this.links[fromLayer].Count; i++)
{
GeneLink link = this.links[fromLayer][i];
int in_layer = link.in_layer;
int in_place = link.in_place;
int out_layer = link.out_layer;
int out_place = link.out_place;
GeneNode inNode = this.nodes[in_layer][in_place];
GeneNode outNode = this.nodes[out_layer][out_place];
outNode.value += (inNode.value * link.weight);
//inNode.value = 0; // So it doesnt retain value from the last iteration; cause of the activationFunc(0) = 0.5 -> activationFunc(0.5) = 0.62.. -> activationFunc(0.62..)
}
// run though all nodes and reset value to 0
foreach (GeneNode node in this.nodes[fromLayer])
{
node.value = 0;
}
}
/*
* private ArrayList<GeneNode> getNodesOfType(int type){
* ArrayList<GeneNode> nodesOfType = new ArrayList<GeneNode>();
* for (GeneNode node : this.nodes){
* if (node.type == type){
* nodesOfType.add(node);
* }
* }
*
* return nodesOfType;
* }
*/
public string toString()
{
string str = "";
for (int i = 0; i < nrLayers; i++)
{
for (int j = 0; j < this.nodes[i].Count; j++)
{
GeneNode node = this.nodes[i][j];
str += "(" + node.value + " : " + node.bias + ") ";
}
str += "\n";
if (i < nrLayers - 1)
{
for (int j = 0; j < this.links[i].Count; j++)
{
GeneLink link = this.links[i][j];
str += "(" + link.in_layer + "," + link.in_place + ")=" + link.weight + "=(" + link.out_layer + "," + link.out_place + ") ";
}
}
str += "\n";
}
return(str);
}
private GeneLink CreateLinkFromLine(string s)
{
var data = s.Split('\t');
var result = new GeneLink();
result.From = data[0];
result.To = data[1];
result.IsPositive = data[2].StartsWith("positive");
if (data.Length > 3)
{
result.IsOptional = data[3].StartsWith("optional");
}
return(result);
}
