/// <summary>
/// This should be called only after receiving the reward.
/// Frequency of variable changes relative to rewards received.
/// </summary>
/// <param name="parent"></param>
public void performOnlineVariableRemoving(MyStochasticReturnPredictor parent)
{
bool removed = false;
// decay all that are included in this DS
for (int i = 0; i < m_rds.VarManager.GetMaxVariables(); i++)
{
if (parent.Ds.IsVariableIncluded(i) &&
m_rds.VarManager.GetVarNo(i).Values.Count > 1 &&
i != parent.GetPromotedVariableIndex())
{
if (changes[i] < m_setup.OnlineVariableRemovingThreshold)
{
removed = true; parent.Ds.RemoveVariable(i);
}
}
}
if (removed)
{
String output =
"SRP: " + parent.GetLabel() + ": Variables removed, current ones: ";
for (int i = 0; i < m_rds.VarManager.GetMaxVariables(); i++)
{
if (parent.Ds.IsVariableIncluded(i))
{
output += i + ", ";
}
}
MyLog.DEBUG.WriteLine(output);
}
}
/// <summary>
/// This should be called only after receiving the reward.
/// Frequency of variable changes relative to rewards received.
/// </summary>
/// <param name="parent"></param>
public void performOnlineVariableRemoving(MyStochasticReturnPredictor parent)
{
bool removed = false;
// decay all that are included in this DS
for (int i = 0; i < m_rds.VarManager.GetMaxVariables(); i++)
{
if (parent.Ds.IsVariableIncluded(i)
&& m_rds.VarManager.GetVarNo(i).Values.Count > 1
&& i != parent.GetPromotedVariableIndex())
{
if (changes[i] < m_setup.OnlineVariableRemovingThreshold)
{
removed = true; parent.Ds.RemoveVariable(i);
}
}
}
if (removed)
{
String output =
"SRP: " + parent.GetLabel() + ": Variables removed, current ones: ";
for (int i = 0; i < m_rds.VarManager.GetMaxVariables(); i++)
{
if (parent.Ds.IsVariableIncluded(i))
{
output += i + ", ";
}
}
MyLog.DEBUG.WriteLine(output);
}
}
/// <summary>
/// For a given predictor, the method creates 2D array of max action utilities and max action labels over selected dimensions.
/// The values in the memory are automatically scaled into the interval 0,1. Realtime values are multililed by motivations (therfore are bigger).
/// </summary>
/// <param name="values">array passed by reference for storing utilities of best action</param>
/// <param name="labelIndexes">array of the same size for best action indexes</param>
/// <param name="predictor">an asbtract action</param>
/// <param name="XVarIndex">global index of state variable in the VariableManager</param>
/// <param name="YVarIndex">the same: y axis</param>
/// <param name="showRealtimeUtilities">show current utilities (scaled by motivations from the source and the hierarchy?)</param>
public void ReadTwoDimensions(ref float[,] values, ref int[,] labelIndexes,
MyStochasticReturnPredictor predictor, int XVarIndex, int YVarIndex, bool showRealtimeUtilities)
{
MyRootDecisionSpace rds = predictor.Rds;
if (XVarIndex >= rds.VarManager.MAX_VARIABLES)
{
XVarIndex = rds.VarManager.MAX_VARIABLES - 1;
}
if (YVarIndex >= rds.VarManager.MAX_VARIABLES)
{
YVarIndex = rds.VarManager.MAX_VARIABLES - 1;
}
if (YVarIndex < 0)
{
YVarIndex = 0;
}
if (XVarIndex < 0)
{
XVarIndex = 0;
}
MyQSAMemory mem = predictor.Mem;
int[] sizes = mem.GetStateSizes(); // size of the matrix
int[] indexes = predictor.Ds.GetCurrentState(); // initial indexes
int[] actionGlobalIndexes = mem.GetGlobalActionIndexes(); // global indexes of actions in the memory
int promotedIndex = predictor.GetPromotedVariableIndex();
MyVariable varX = rds.VarManager.GetVarNo(XVarIndex);
MyVariable varY = rds.VarManager.GetVarNo(YVarIndex);
float[] varXvals = varX.Values.ToArray();
float[] varYvals = varY.Values.ToArray();
Array.Sort(varXvals);
Array.Sort(varYvals);
int sx = 0;
int sy = 0;
if (XVarIndex == promotedIndex)
{
sx = 1;
indexes[XVarIndex] = 0;
varXvals = new float[] { 0 };
sy = this.ReadSize(predictor.Ds, varY, YVarIndex, predictor.GetLabel());
}
else if (YVarIndex == promotedIndex)
{
sy = 1;
indexes[YVarIndex] = 0;
varYvals = new float[] { 0 };
sx = this.ReadSize(predictor.Ds, varX, XVarIndex, predictor.GetLabel());
}
else
{
sx = this.ReadSize(predictor.Ds, varX, XVarIndex, predictor.GetLabel());
sy = this.ReadSize(predictor.Ds, varY, YVarIndex, predictor.GetLabel());
}
if (values == null || labelIndexes == null ||
values.GetLength(0) != sx || values.GetLength(1) != sy ||
labelIndexes.GetLength(0) != sx || labelIndexes.GetLength(1) != sy)
{
values = new float[sx, sy];
labelIndexes = new int[sx, sy];
}
for (int i = 0; i < sx; i++)
{
indexes[XVarIndex] = (int)varXvals[i];
for (int j = 0; j < sy; j++)
{
indexes[YVarIndex] = (int)varYvals[j];
float[] utilities = mem.ReadData(indexes);
if (predictor.GetMaxMemoryValue() != 0)
{
for (int k = 0; k < utilities.Length; k++)
{
utilities[k] = utilities[k] / predictor.GetMaxMemoryValue();
}
}
float maxValue = 0.0f;
int maxIndex = 0;
if (utilities.Length != actionGlobalIndexes.Length)
{
MyLog.DEBUG.WriteLine("ERROR: unexpected length of utilities array, will place default values");
utilities = new float[actionGlobalIndexes.Length];
}
else if (actionGlobalIndexes.Length == 0)
{
MyLog.DEBUG.WriteLine("WARNING: this DS contains no actions. Will use the action 0");
utilities = new float[1];
actionGlobalIndexes = new int[] { 0 };
}
else
{
maxValue = utilities.Max();
maxIndex = utilities.ToList().IndexOf(maxValue);
}
if (showRealtimeUtilities)
{
values[i, j] = maxValue * predictor.GetMyTotalMotivation();
}
else
{
values[i, j] = maxValue;
}
labelIndexes[i, j] = actionGlobalIndexes[maxIndex];
}
}
}