void TargetWeightsExperiment::populateSubstrate(shared_ptr<const NEAT::GeneticIndividual> individual)
{
//cout << "Populating substrate...";
NEAT::FastNetwork <double> network = individual->spawnFastPhenotypeStack<double>(); //JMC: this network is the CPPN used to produce the substrate (neural network)
//progress_timer t;
int linkCount=0;
int counter=0;
double x1Val,y1Val,x2Val,y2Val;
for (int y1=0;y1<numNodesY;y1++)
{
//cout << "loop: " << endl;
for (int x1=0;x1<numNodesX;x1++)
{
for (int y2=0;y2<numNodesY;y2++)
{
for (int x2=0;x2<numNodesX;x2++)
{
x1Val = mapXYvalToNormalizedGridCoord(x1, numNodesX); //see function for description
y1Val = mapXYvalToNormalizedGridCoord(y1, numNodesY);
x2Val = mapXYvalToNormalizedGridCoord(x2, numNodesX); //see function for description
y2Val = mapXYvalToNormalizedGridCoord(y2, numNodesY);
//cout << "x1: " << setw(5) << setprecision(2) << x1Val << " y1: " << setw(5) << y1Val << " x2: " << setw(5) << setprecision(2) << x2Val << " y2: " << setw(5) << y2Val << endl;
network.reinitialize();
network.setValue("X1",x1Val);
network.setValue("Y1",y1Val);
network.setValue("X2",x2Val);
network.setValue("Y2",y2Val);
network.setValue("Bias",0.3); //JMC: we have just set the inputs to the to be x1,y1,x2,y2,bias
//cout << "RUNNING UPDATE ON CPPN----------------------------------------------------------------------------------------" << endl;
network.update(); //JMC: on this line we run the CPPN network...
//cout << "DONE RUNNING UPDATE ON CPPN----------------------------------------------------------------------------------------" << endl;
double greyVal = network.getValue("Output"); //JMC: and here we get the CPPN output (which is the weight of the connection between the two)
//substrate.getLink(counter)->weight = ( greyVal*3.0 );
//for the target weight experiment we do not want to make it easier for them to get zero nor do we need to normalize the greyValue, so just use it
substrate.getLink(counter)->weight = greyVal;
linkCount++;
counter++;
}
}
}
}
//cout << "done!\n";
//cout << "Number of expressed links: " << linkCount << endl;
}
void XorExperiment::processIndividualPostHoc(shared_ptr<NEAT::GeneticIndividual> individual)
{
NEAT::FastNetwork<float> network = individual->spawnFastPhenotypeStack<float>();
//TODO Put in userdata
double fitness = 10.0;
double maxFitness = 10.0;
for (int x1=0;x1<2;x1++)
{
for (int x2=0;x2<2;x2++)
{
network.reinitialize();
network.setValue("X1",x1);
network.setValue("X2",x2);
network.setValue("Bias",0.3f);
network.update();
double value = network.getValue("Output");
double expectedValue = (double)(x1 ^ x2);
fitness += (5000*(2-fabs(value-expectedValue)));
maxFitness += 5000*2;
}
}
cout << "POST HOC ANALYSIS: " << fitness << "/" << maxFitness << endl;
}
void XorExperiment::processGroup(shared_ptr<NEAT::GeneticGeneration> generation)
{
NEAT::FastNetwork<float> network = group[0]->spawnFastPhenotypeStack<float>();
group[0]->reward(10);
for (int x1=0;x1<2;x1++)
{
for (int x2=0;x2<2;x2++)
{
network.reinitialize();
network.setValue("X1",x1);
network.setValue("X2",x2);
network.setValue("Bias",0.3f);
network.update();
double value = network.getValue("Output");
double expectedValue = (double)(x1 ^ x2);
group[0]->reward(5000*(2-fabs(value-expectedValue)));
}
}
}
void ShapesExperiment::printNetworkCPPN(shared_ptr<const NEAT::GeneticIndividual> individual)
{
cout << "Printing cppn network" << endl;
ofstream network_file;
network_file.open ("networkCPPN-ThatSolvedTheProblem.txt", ios::trunc );
NEAT::FastNetwork <double> network = individual->spawnFastPhenotypeStack <double>(); //JMC: this creates the network CPPN associated with this individual used to produce the substrate (neural network)
network_file << "num links:" << network.getLinkCount() << endl;
network_file << "num nodes:" << network.getNodeCount() << endl;
int numLinks = network.getLinkCount();
int numNodes = network.getNodeCount();
ActivationFunction activationFunction;
//print out which node corresponds to which integer (e.g. so you can translate a fromNode of 1 to "x1"
map<string,int> localNodeNameToIndex = *network.getNodeNameToIndex();
for( map<string,int>::iterator iter = localNodeNameToIndex.begin(); iter != localNodeNameToIndex.end(); iter++ ) {
network_file << (*iter).first << " is node number: " << (*iter).second << endl;
}
for (size_t a=0;a<numLinks;a++)
{
NetworkIndexedLink <double> link = *network.getLink(a);
network_file << link.fromNode << "->" << link.toNode << " : " << link.weight << endl;
}
for (size_t a=0;a<numNodes;a++)
{
activationFunction = *network.getActivationFunction(a);
network_file << " activation function " << a << ": ";
if(activationFunction == ACTIVATION_FUNCTION_SIGMOID) network_file << "ACTIVATION_FUNCTION_SIGMOID";
if(activationFunction == ACTIVATION_FUNCTION_SIN) network_file << "ACTIVATION_FUNCTION_SIN";
if(activationFunction == ACTIVATION_FUNCTION_COS) network_file << "ACTIVATION_FUNCTION_COS";
if(activationFunction == ACTIVATION_FUNCTION_GAUSSIAN) network_file << "ACTIVATION_FUNCTION_GAUSSIAN";
if(activationFunction == ACTIVATION_FUNCTION_SQUARE) network_file << "ACTIVATION_FUNCTION_SQUARE";
if(activationFunction == ACTIVATION_FUNCTION_ABS_ROOT) network_file << "ACTIVATION_FUNCTION_ABS_ROOT";
if(activationFunction == ACTIVATION_FUNCTION_LINEAR) network_file << "ACTIVATION_FUNCTION_LINEAR";
if(activationFunction == ACTIVATION_FUNCTION_ONES_COMPLIMENT) network_file << "ACTIVATION_FUNCTION_ONES_COMPLIMENT";
if(activationFunction == ACTIVATION_FUNCTION_END) network_file << "ACTIVATION_FUNCTION_END";
network_file << endl;
}
network_file.close();
return;
}
void printNetwork(NEAT::FastNetwork<double> &testNetwork)
{
return;
cout << "Network links:\n";
cout << testNetwork.getLink("Input0","Hidden1")->weight << endl;
cout << testNetwork.getLink("Input0","Hidden2")->weight << endl;
cout << endl;
cout << testNetwork.getLink("Input1","Hidden1")->weight << endl;
cout << testNetwork.getLink("Input1","Hidden2")->weight << endl;
cout << endl;
cout << testNetwork.getLink("Input2","Hidden1")->weight << endl;
cout << testNetwork.getLink("Input2","Hidden2")->weight << endl;
cout << endl;
cout << testNetwork.getLink("Hidden0","Output0")->weight << endl;
cout << testNetwork.getLink("Hidden1","Output0")->weight << endl;
cout << testNetwork.getLink("Hidden2","Output0")->weight << endl;
cout << endl;
CREATE_PAUSE("");
}
void ShapesExperiment::processInteractiveEvaluation(int _genNumber)
{
vector <int> fitnessScores;
writeAndTeeUpParentsOrderFile();
//if the command line is telling us which orgs to select, handle that and return (skip the rest of the function)
if(int(NEAT::Globals::getSingleton()->getParameterValue("NeedToInjectFitnessValuesFromCommandLine")))
{
NEAT::Globals::getSingleton()->setParameterValue("NeedToInjectFitnessValuesFromCommandLine", 0.0); //set flag so we don't enter this condition the next time around
if(int(NEAT::Globals::getSingleton()->getParameterValue("SeedingSoDecrementByOne"))) firstGenSeedingSoDontPrintParentsFile = true;
//initialize default (non-selected) fitness values
for(int z=0;z< group.size();z++)
{
fitnessScores.push_back(1);
}
if(int(NEAT::Globals::getSingleton()->getParameterValue("StartVfFileIndexesAtOne")))
{
firstGen = false; //don't make the gen num zero if branching
}
//get vector that lists the orgs we need to mark as selected (variable sized)
vector <int> listOfOrgsInjectedAsSelected = NEAT::Globals::getSingleton()->getInjectOrgsSelected();
if (!listOfOrgsInjectedAsSelected.size()>=1)
{
cout << "You must provide a list of orgs to mark as selected with the -F flag" << endl;
}
//mark those orgs as selected
for(int z=0;z<listOfOrgsInjectedAsSelected.size();z++)
{
PRINT(listOfOrgsInjectedAsSelected[z]);
fitnessScores[(listOfOrgsInjectedAsSelected[z])] = 1000;
}
cout << "result of command line arguments being used to make initial selection" << endl;
for(int z=0;z< group.size();z++)
{
PRINT(fitnessScores[z]);
shared_ptr<NEAT::GeneticIndividual> individual = group[z];
if (fitnessScores[z]> 5) individual->reward(fitnessScores[z]); //if picked by user (either as champ or tie-for-second, use those scores
else individual->reward(1);
}
return;
}
// writeAndTeeUpParentsOrderFile(); //delme if you moved this up above the one-time for inserted fitness and like it...this was it's original position
viewThresh = 100000; //how long the user has to input their champ
vector <CMesh> meshesToDraw;
NEAT::FastNetwork <double> network;
//initializes continuous space array with zeros. +1 is because we need to sample
// these points at all corners of each voxel, leading to n+1 points in any dimension
CArray3Df ContinuousArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array
CArray3Df rColorArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array of red color for each voxel
CArray3Df gColorArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array of green color for each voxel
CArray3Df bColorArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array of blue color for each voxel
int px, py, pz; //temporary variable to store locations as we iterate
float xNormalized;
float yNormalized;
float zNormalized;
float distanceFromCenter = 0.0;
float distanceFromCenterXY = 0.0;
float distanceFromCenterYZ = 0.0;
float distanceFromCenterXZ = 0.0;
float arcTan2Val = 0.0;
float distanceFromShell = 0.0;
float insideOutside = 0.0;
int ai;
float e;
//START HACK v.2
string line;
ifstream file("/home/achen/csv/pure.csv"); //FILE NAME
float store2 [2000];
int i= 0;
while (getline(file,line)){
store2[i]= atof(line.c_str());
i++;
}
file.close();
i= 0;
int voxelCount=0;
shared_ptr<NEAT::GeneticIndividual> individual;
for(int z=0;z< group.size();z++)
{
cout << "generating shape: " << z << endl;
individual = group[z];
network = individual->spawnFastPhenotypeStack<double>(); //JMC: this is the CPPN network
voxelCount=0;
cout << "JMC INTERACTIVE HACKING" << endl;
for (int j=0; j<ContinuousArray.GetFullSize(); j++) //iterate through each location of the continuous matrix
{
ContinuousArray.GetXYZ(&px, &py, &pz, j); //gets XYZ location of this element in the array
xNormalized = mapXYvalToNormalizedGridCoord(px, num_x_voxels);
yNormalized = mapXYvalToNormalizedGridCoord(py, num_y_voxels);
zNormalized = mapXYvalToNormalizedGridCoord(pz, num_z_voxels);
cout << px << endl;
//ACHEN: Will change variable name...
e= store2[i];
i++;
//ACHEN: LOGGING POSITIONS
//cout << "(" << xNormalized << "," << yNormalized << "," << zNormalized << ")" << endl;
//calculate input vars
if(addDistanceFromCenter) distanceFromCenter = sqrt(pow(double(xNormalized),2.0)+pow(double(yNormalized),2.0)+pow(double(zNormalized),2.0));
if(addDistanceFromCenterXY) distanceFromCenterXY = sqrt(pow(double(xNormalized),2.0)+pow(double(yNormalized),2.0));
if(addDistanceFromCenterYZ) distanceFromCenterYZ = sqrt(pow(double(yNormalized),2.0)+pow(double(zNormalized),2.0));
if(addDistanceFromCenterXZ) distanceFromCenterXZ = sqrt(pow(double(xNormalized),2.0)+pow(double(zNormalized),2.0));
if(addArcTan2) arcTan2Val = atan2(yNormalized, zNormalized);
network.reinitialize(); //reset CPPN
//next three lines are zeroed out for shell debugging
//cout << "JMC HACKING VALUES TO ZERO" << endl;
//network.setValue("x",0); //set the input numbers
//network.setValue("y",0);
//network.setValue("z",0);
//network.setValue("x",xNormalized); //set the input numbers
//network.setValue("y",yNormalized);
//network.setValue("z",zNormalized);
if(addDistanceFromShell) network.setValue("ds",e); //ACHEN: Shell distance
if(addDistanceFromCenter) network.setValue("d",distanceFromCenter);
if(addDistanceFromCenterXY) network.setValue("dxy",distanceFromCenterXY);
if(addDistanceFromCenterYZ) network.setValue("dyz",distanceFromCenterYZ);
if(addDistanceFromCenterXZ) network.setValue("dxz",distanceFromCenterXZ);
if(addArcTan2) network.setValue("arcTan2",arcTan2Val);
//network.setValue("Bias",0.3);
network.update(); //JMC: on this line we run the CPPN network...
ContinuousArray[j] = network.getValue("Output"); //JMC: and here we get the CPPN output (which is the weight of the connection between the two)
//hack directly into array @#
//ContinuousArray[j] = e;
//cout << "e: " << e << " i " << i ;
if(useColor){
rColorArray[j] = (1 + network.getValue("Output-colorR"))/2.0;
gColorArray[j] = (1 + network.getValue("Output-colorG"))/2.0;
bColorArray[j] = (1 + network.getValue("Output-colorB"))/2.0;
}
// PRINT(rColorArray[j]);
if (ContinuousArray[j]>voxelExistsThreshold) voxelCount++;
}
i=0;
std::cout << "Performing marching cubes...\n";
CMesh OutputMesh;
CMarchCube::SingleMaterialMultiColor(&OutputMesh, &ContinuousArray, &rColorArray, &gColorArray, &bColorArray, voxelExistsThreshold, VoxelSize*1000); //jmc: last argument is the threshold above which we consider the voxel to be extant
meshesToDraw.push_back(OutputMesh);
}
cout << "drawing shapes" << endl;
fitnessScores = drawShapes(meshesToDraw, _genNumber);
cout << "fitness values used when not getting list of selected orgs from command line" << endl;
for(int z=0;z< group.size();z++)
{
PRINT(fitnessScores[z]);
shared_ptr<NEAT::GeneticIndividual> individual = group[z];
if (fitnessScores[z]> 5) individual->reward(fitnessScores[z]); //if picked by user (either as champ or tie-for-second, use those scores
else
{
individual->reward(1);
}
}
}
double ShapesExperiment::processEvaluation(shared_ptr<NEAT::GeneticIndividual> individual)
{
#if SHAPES_EXPERIMENT_DEBUG
cout << "JMC: evaluating fitness in ShapesExperiment::processEvaluation\n";
#endif
bool EvolvingTarget = true;
bool EvolvingInteractive;
if(EvolvingTarget == true) {EvolvingInteractive = false; viewThresh = 0.5;}
else { EvolvingInteractive = true; }
float InteractiveFitnessScore = 0.0; //since we raise to the power of two, it can be zero
//initializes continuous space array with zeros. +1 is because we need to sample
// these points at all corners of each voxel, leading to n+1 points in any dimension
CArray3Df ContinuousArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array
//TODO; If you end up not using color, then pound define these out when not using them
CArray3Df rColorArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array of colors for each voxel
CArray3Df gColorArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array of colors for each voxel
CArray3Df bColorArray(num_x_voxels, num_y_voxels, num_z_voxels); //evolved array of colors for each voxel
NEAT::FastNetwork <double> network = individual->spawnFastPhenotypeStack<double>(); //JMC: this is the CPPN network
int px, py, pz; //temporary variable to store locations as we iterate
float xNormalized;
float yNormalized;
float zNormalized;
float distanceFromCenter;
float distanceFromCenterXY;
float distanceFromCenterYZ;
float distanceFromCenterXZ;
float distanceFromShell;
float insideOutside;
float arcTan2Val;
int ai;
/**
//START HACK PREPARATIONS
string line;
ifstream file("/home/achen/csv/pure.csv"); //FILE NAME
float store [2000];
int i= 0;
float e= 0;
while (getline(file,line)){
store[i]= atof(line.c_str());
i++;
}
file.close();
**/
for (int j=0; j<ContinuousArray.GetFullSize(); j++) //iterate through each location of the continuous matrix
{
ContinuousArray.GetXYZ(&px, &py, &pz, j); //gets XYZ location of this element in the array
xNormalized = mapXYvalToNormalizedGridCoord(px, num_x_voxels);
yNormalized = mapXYvalToNormalizedGridCoord(py, num_y_voxels);
zNormalized = mapXYvalToNormalizedGridCoord(pz, num_z_voxels);
//Array hack
//e= store[i];
//i++;
//calculate input vars
if(addDistanceFromCenter) distanceFromCenter = sqrt(pow(double(xNormalized),2.0)+pow(double(yNormalized),2.0)+pow(double(zNormalized),2.0));
if(addDistanceFromCenterXY) distanceFromCenterXY = sqrt(pow(double(xNormalized),2.0)+pow(double(yNormalized),2.0));
if(addDistanceFromCenterYZ) distanceFromCenterYZ = sqrt(pow(double(yNormalized),2.0)+pow(double(zNormalized),2.0));
if(addDistanceFromCenterXZ) distanceFromCenterXZ = sqrt(pow(double(xNormalized),2.0)+pow(double(zNormalized),2.0));
if(addArcTan2) arcTan2Val = atan2(yNormalized, zNormalized);
network.reinitialize(); //reset CPPN
network.setValue("x",xNormalized); //set the input numbers
network.setValue("y",yNormalized);
network.setValue("z",zNormalized);
if(addDistanceFromCenter) network.setValue("d",distanceFromCenter);
if(addDistanceFromCenterXY) network.setValue("dxy",distanceFromCenterXY);
if(addDistanceFromCenterYZ) network.setValue("dyz",distanceFromCenterYZ);
if(addDistanceFromCenterXZ) network.setValue("dxz",distanceFromCenterXZ);
//if(addDistanceFromShell) network.setValue("ds",e); //ACHEN: Shell distance
//if(addInsideOrOutside) network.setValue("inout",e);
if(addArcTan2) network.setValue("arcTan2",arcTan2Val);
network.setValue("Bias",0.3);
network.update(); //JMC: on this line we run the CPPN network...
ContinuousArray[j] = network.getValue("Output"); //JMC: and here we get the CPPN output (which is the weight of the connection between the two)
if(useColor){
rColorArray[j] = network.getValue("Output-colorR");
gColorArray[j] = network.getValue("Output-colorG");
bColorArray[j] = network.getValue("Output-colorB");
}
}
int numberSameVoxels = compareEvolvedArrayToTargetArray(ContinuousArray);
double percentSameVoxels = double(numberSameVoxels)/double(ContinuousArray.GetFullSize());
PRINT(percentSameVoxels);
//std::cout << "Performing marching cubes...\n";
CMesh OutputMesh;
CMarchCube::SingleMaterial(&OutputMesh, &ContinuousArray, voxelExistsThreshold); //jmc: last argument is the threshold above which we consider the voxel to be extant
//save stl file for new all-time highs
if (percentSameVoxels - maxPercentSoFar > 0.001)
{
printf("++++++++++++++++++++++++++++++++ New all time high! PercentSameVoxelx = %f\n", percentSameVoxels);
maxPercentSoFar = percentSameVoxels;
allTimeHighCounter++;
string suffix = ".stl";
string allTimeNumAsString;
string percentSameVoxelsAsFloat;
//convert allTimeHigh to string
std::stringstream tempVar;
std::stringstream tempVarPercent;
tempVar << allTimeHighCounter;
allTimeNumAsString = tempVar.str();
tempVarPercent << percentSameVoxels;
percentSameVoxelsAsFloat = tempVarPercent.str();
string filename = "ChamNum" + allTimeNumAsString + "-Fit_" + percentSameVoxelsAsFloat + suffix;
cout << "filename is " << filename << endl;
std::cout << "Saving file - " << filename << endl;
}
//Draw function goes here
#ifdef VISUALIZESHAPES
//InteractiveFitnessScore = drawShape(EvolvingInteractive, OutputMesh); //InteractiveFitnessScore ignored in target based evolution
#endif
double fitness = 0;
if(EvolvingInteractive){ fitness = double(InteractiveFitnessScore); PRINT(InteractiveFitnessScore);}
else if (EvolvingTarget) fitness = double(percentSameVoxels);
else {cout << "error: what is your fitness function?" << endl; exit(-1);}
double exponentiatedFitness = pow(2000,double(fitness));
assert(exponentiatedFitness >0); //no fitness scores of zero allowed
return exponentiatedFitness;
}
void populateSubstrate(boost::shared_ptr<const NEAT::GeneticIndividual> individual) {
NEAT::FastNetwork<double> network = individual->spawnFastPhenotypeStack<
double> ();
// for all nodes in the source layer
for (int y1 = 0; y1 < numNodesY; y1++) {
for (int x1 = 0; x1 < numNodesX; x1++) {
// compute source node's coordinates in the NEAT nodeLookup
const int x1mod = x1 - numNodesX / 2;
const int y1mod = y1 - numNodesY / 2;
// compute source node's coordinates in the CPPN
const double x1normal = (x1 - numNodesX / 2) / double((numNodesX
- 1) / 2);
const double y1normal = (y1 - numNodesY / 2) / double((numNodesY
- 1) / 2);
// for all nodes in the target layer
for (int y2 = 0; y2 < numNodesY; y2++) {
for (int x2 = 0; x2 < numNodesX; x2++) {
for(int z1normal = -1; z1normal <= 0; z1normal+=1) {
// compute target node's coordinates in the NEAT nodeLookup
const int x2mod = x2 - numNodesX / 2;
const int y2mod = y2 - numNodesY / 2;
// compute target node's coordinates in the CPPN
const double x2normal = (x2 - numNodesX / 2)
/ double((numNodesX - 1) / 2);
const double y2normal = (y2 - numNodesY / 2)
/ double((numNodesY - 1) / 2);
double z2normal = z1normal + 1;
//// set up the CPPN input
network.reinitialize();
network.setValue("X1", x1normal);
network.setValue("Y1", y1normal);
network.setValue("Z1", x2normal);
network.setValue("X2", y2normal);
network.setValue("Y2", x2normal);
network.setValue("Z2", y2normal);
/// work transparently with Deltas
if (network.hasNode("DeltaX") && network.hasNode("DeltaY") && network.hasNode("DeltaZ")) {
network.setValue("DeltaX", x2normal - x1normal);
network.setValue("DeltaY", y2normal - y1normal);
network.setValue("DeltaZ", z2normal - z1normal);
}
/// work transparently with homogeneous & heterogeneous controllers
if (heterogeneous_controller == true && network.hasNode(
"T1") && network.hasNode("T2")) {
// screen << "Working with heterogeneous controllers"<<endl;
double t1normal;
double t2normal;
double bodyLength(3.0); // Was 3.0 for original layout
if (id <= 7) {
t1normal = (id - 4) / bodyLength;
t2normal = 0.25;
} else {
t1normal = (id - 13) / bodyLength;
t2normal = -0.25;
}
network.setValue("T1", t1normal);
network.setValue("T2", t2normal);
if (network.hasNode("DeltaT")) {
network.setValue("DeltaT", sqrt(t1normal * t1normal + t2normal * t2normal)); // (t2normal - t1normal)
}
} else {
// screen << "Working with homogeneous controllers"<<endl;
heterogeneous_controller = false;
}
if (network.hasNode("Bias")) {
// set CPPN bias
network.setValue("Bias", CPPN_BIAS);
}
// propagate CPPN
network.update();
// get the weights for the two links between selected source-target
// coordinates, between layers A & B, and B & C
double output = network.getValue("Output");
NetworkIndexedLink<double>* link;
/// get NEAT network link object
link = substrate.getLink(nameLookup[Node(x1mod, y1mod, z1normal + 1)],
nameLookup[Node(x2mod, y2mod, z2normal + 1)]);
/// set link value according to threshold
output = pow(output, 171);
if (fabs(output) > WEIGHT_TRESHOLD) {
if (output > 0.0)
link->weight = output * WEIGHT_SCALER;
else
link->weight = output * WEIGHT_SCALER;
} else {
link->weight = (0.0);
}
#ifdef USE_BIASES
if(network.hasNode("Bias_out")){
/// set the node's biases using just the (x1,y1) values provided
/// by the CPPN for the biases
if (x2 == 0 && y2 == 0 && z2normal == 1) {
double nodeBias;
// bias for target node
nodeBias = network.getValue("Bias_out");
substrate.setBias(nameLookup[Node(x1mod, y1mod, z2normal + 1)],
nodeBias);
}
}
#endif
}
}
}
}
}
}