public void loadWeightsFromFile()
{
List <float> weightAverages = CreatureAveragesIO.loadAverages();
int avgsIndex = 0;
// for every node
for (int j = 0; j < creature.networks.Count; j++)
{
foreach (string key in creature.networks[j].Keys)
{
for (int k = 0; k < creature.networks[j][key].net.Count; k++)
{
for (int l = 0; l < creature.networks[j][key].net[k].Count; l++)
{
bool castWorked = true;
NonInputNode node = null;
// get node and convert it to Non-Input node if possible
try
{
node = (NonInputNode)creature.networks[j][key].net[k][l];
}
catch (InvalidCastException e)
{
castWorked = false;
}
// if it is a non-input node
if (castWorked)
{
for (int i = 0; i < node.weights.Count; i++)
{
try
{
node.weights[i] = weightAverages[avgsIndex];
avgsIndex++;
}
catch (ArgumentOutOfRangeException e)
{
Debug.LogError("Tried to read weight from file, but weight array length didn't match current creature.");
}
}
}
}
}
}
}
}
public void calculateWeightStats()
{
updateWeightsByCreature();
// NOTE: only works if all creatures in the population have the same number of weights
// calculate averages
List <float> averages = new List <float>();
int count;
// assuming any creatures were left
if (weightsByCreature.Count > 0)
{
// for every weight
for (int i = 0; i < weightsByCreature[0].Count; i++)
{
count = 0;
float sum = 0;
// for every creature
for (int j = 0; j < weightsByCreature.Count; j++)
{
// TODO: fix this: Probably relates to creature removal from list?
try
{
count++;
sum += weightsByCreature[j][i]; // add the weight for that creature to the sum for that weight
}
catch (ArgumentOutOfRangeException e)
{
//Debug.Log("Out of range: " + j + " " + i);
}
}
averages.Add(sum / count);
}
// calculate variances and standard deviations
List <float> variances = new List <float>();
List <float> sDs = new List <float>();
for (int i = 0; i < weightsByCreature[0].Count; i++)
{
count = 0;
float sumSquaredDiff = 0;
// for every creature
for (int j = 0; j < weightsByCreature.Count; j++)
{
// TODO: fix this
try
{
count++;
sumSquaredDiff += (float)Math.Pow(weightsByCreature[j][i] - averages[i], 2.0); // add the weight for that creature to the sum for that weight
}
catch (ArgumentOutOfRangeException e)
{
//Debug.Log("Out of range: " + j + " " + i);
}
}
variances.Add(sumSquaredDiff / count);
sDs.Add((float)Math.Sqrt((double)sumSquaredDiff / count));
}
// set instance variables
weightAverages = averages;
weightSDs = sDs;
// calculate measure of overall variability
float varianceSum = 0;
for (int i = 0; i < variances.Count; i++)
{
varianceSum += variances[i];
}
overallVariability = (float)Math.Sqrt((double)(varianceSum / variances.Count));
}
CreatureAveragesIO.saveAverages(weightAverages);
}
