public override float EvaluateTestCase(GAIndividual inIndividual, object inInput, object inOutput)
{
int timeSteps = 1000;
float timeDiscritized = 0.01f;
float maxTime = timeSteps * timeDiscritized;
float captureRadius = 0.01f;
ObjectPair xv = (ObjectPair)inInput;
float position = (float)xv._first;
float velocity = (float)xv._second;
for (int step = 1; step <= timeSteps; step++)
{
_interpreter.ClearStacks();
FloatStack fStack = _interpreter.FloatStack();
BooleanStack bStack = _interpreter.BoolStack();
ObjectStack iStack = _interpreter.InputStack();
// Position will be on the top of the stack, and velocity will be
// second.
fStack.Push(position);
fStack.Push(velocity);
// Must be included in order to use the input stack. Uses same order
// as inputs on Float stack.
iStack.Push(position);
iStack.Push(velocity);
_interpreter.Execute(((PushGPIndividual)inIndividual)._program, _executionLimit);
// If there is no boolean on the stack, the program has failed to
// return a reasonable output. So, return a penalty fitness of
// twice the maximum time.
if (bStack.Size() == 0)
{
return(2 * maxTime);
}
// If there is a boolean, use it to compute the next position and
// velocity. Then, check for termination conditions.
// NOTE: If result == True, we will apply the force in the positive
// direction, and if result == False, we will apply the force in
// the negative direction.
bool positiveForce = bStack.Top();
float acceleration;
if (positiveForce)
{
acceleration = 0.5f;
}
else
{
acceleration = -0.5f;
}
velocity = velocity + (timeDiscritized * acceleration);
position = position + (timeDiscritized * velocity);
// Check for termination conditions
if (position <= captureRadius && position >= -captureRadius && velocity <= captureRadius && velocity >= -captureRadius)
{
//Cart is centered, so return time it took.
return(step * timeDiscritized);
}
}
// If here, the cart failed to come to rest in the allotted time. So,
// return the failed error of maxTime.
return(maxTime);
}
public override void Execute(Interpreter interpeter)
{
FloatStack stack = interpeter.FloatStack();
if (stack.Size() >= 1)
{
// we're good
float slope = stack.Pop();
stack.Push((float)Math.Atan(slope));
}
else
{
stack.Push(0);
}
}
public override float EvaluateTestCase(GAIndividual inIndividual, object inInput, object inOutput)
{
_effort++;
_interpreter.ClearStacks();
_currentInput = (float)inInput;
FloatStack fstack = _interpreter.FloatStack();
fstack.Push(_currentInput);
// Must be included in order to use the input stack.
_interpreter.InputStack().Push(_currentInput);
_interpreter.Execute(((PushGPIndividual)inIndividual)._program, _executionLimit);
float result = fstack.Top();
// System.out.println( _interpreter + " " + result );
//trh
/*
* System.out.println("\nevaluations according to interpreter " +
* Interpreter.GetEvaluationExecutions());
* System.out.println("evaluations according to effort " + _effort);
*/
// Penalize individual if there is no result on the stack.
if (fstack.Size() == 0)
{
return(_noResultPenalty);
}
return(result - ((float)inOutput));
}
public override float EvaluateTestCase(GAIndividual inIndividual, object inInput, object inOutput)
{
_interpreter.ClearStacks();
_currentInput = (float)inInput;
FloatStack stack = _interpreter.FloatStack();
stack.Push(_currentInput);
_interpreter.Execute(((PushGPIndividual)inIndividual)._program, _executionLimit);
float result = stack.Top();
// System.out.println( _interpreter + " " + result );
return(result - ((float)inOutput));
}
public override float EvaluateTestCase(GAIndividual inIndividual, object inInput, object inOutput)
{
_interpreter.ClearStacks();
float currentInput = (float)inInput;
FloatStack stack = _interpreter.FloatStack();
stack.Push(currentInput);
// Must be included in order to use the input stack.
_interpreter.InputStack().Push(currentInput);
_interpreter.Execute(((PushGPIndividual)inIndividual)._program, _executionLimit);
float result = stack.Top();
// Penalize individual if there is no result on the stack.
if (stack.Size() == 0)
{
return(_noResultPenalty);
}
return(result - ((float)inOutput));
}
public virtual float GetIndividualTestCaseResult(GAIndividual inIndividual, GATestCase inTestCase)
{
_interpreter.ClearStacks();
float currentInput = (float)inTestCase._input;
FloatStack stack = _interpreter.FloatStack();
stack.Push(currentInput);
// Must be included in order to use the input stack.
_interpreter.InputStack().Push(currentInput);
_interpreter.Execute(((PushGPIndividual)inIndividual)._program, _executionLimit);
float result = stack.Top();
// If no result, return 0
if (stack.Size() == 0)
{
return(0);
}
return(result);
}
public void PushInput(Interpreter inI, int n)
{
ObjectStack _stack = inI.InputStack();
if (_stack.Size() > n)
{
object inObject = _stack.DeepPeek(n);
if (inObject is int)
{
IntStack istack = inI.IntStack();
istack.Push((int)inObject);
}
else
{
// if (inObject is Number)
// {
// FloatStack fstack = inI.FloatStack();
// fstack.Push(((Number)inObject).FloatValue());
// }
//else
if (inObject is float)
{
FloatStack fstack = inI.FloatStack();
fstack.Push((float)inObject);
}
else
{
if (inObject is bool)
{
BooleanStack bstack = inI.BoolStack();
bstack.Push((bool)inObject);
}
else
{
Console.Error.WriteLine("Error during input.index - object " + inObject.GetType() +
" is not a legal object according to " + this.GetType() + ".");
}
}
}
}
}
public void testPop()
{
Program p = new Program("( 1 2 3 4.0 5.0 true false " +
"boolean.pop integer.pop float.pop )");
interpreter.Execute(p);
istack.Push(1);
istack.Push(2);
fstack.Push(4.0f);
bstack.Push(true);
Assert.AreEqual(istack, interpreter.IntStack());
Assert.AreEqual(fstack, interpreter.FloatStack());
Assert.AreEqual(bstack, interpreter.BoolStack());
}