/// <summary>
/// Construct the ramped half-and-half generator.
/// </summary>
/// <param name="theContext">The context.</param>
/// <param name="theMinDepth">The minimum depth.</param>
/// <param name="theMaxDepth">The maximum depth.</param>
public RampedHalfAndHalf(EncogProgramContext theContext,
int theMinDepth, int theMaxDepth)
: base(theContext, theMaxDepth)
{
_minDepth = theMinDepth;
_fullGenerator = new PrgFullGenerator(theContext, theMaxDepth);
_growGenerator = new PrgGrowGenerator(theContext, theMaxDepth);
}
/// <summary>
/// Construct the generator.
/// </summary>
/// <param name="theContext">The context that is to be used for generation.</param>
/// <param name="theMaxDepth">The maximum depth to generate to.</param>
protected AbstractPrgGenerator(EncogProgramContext theContext,
int theMaxDepth)
{
if (theContext.Functions.Count == 0)
{
throw new EncogError("There are no opcodes defined");
}
_context = theContext;
_maxDepth = theMaxDepth;
_hasEnum = _context.HasEnum;
Score = new ZeroEvalScoreFunction();
MinConst = -10;
MaxConst = 10;
RandomFactory = EncogFramework.Instance.RandomFactory.FactorFactory();
MaxGenerationErrors = 500;
}
/// <summary>
/// Add the opcodes for numeric operations to a context.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
/// <param name="protectedDiv">Should protected division be used.</param>
public static void CreateNumericOperators(
EncogProgramContext context, bool protectedDiv)
{
FunctionFactory factory = context.Functions;
factory.AddExtension(EXTENSION_VAR_SUPPORT);
factory.AddExtension(EXTENSION_CONST_SUPPORT);
factory.AddExtension(EXTENSION_NEG);
factory.AddExtension(EXTENSION_ADD);
factory.AddExtension(EXTENSION_SUB);
factory.AddExtension(EXTENSION_MUL);
if (protectedDiv)
{
factory.AddExtension(EXTENSION_PDIV);
}
else
{
factory.AddExtension(EXTENSION_DIV);
}
factory.AddExtension(EXTENSION_POWER);
}
/// <summary>
/// Add the opcodes for numeric operations to a context, do not use protected
/// division.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
public static void CreateNumericOperators(EncogProgramContext context)
{
CreateNumericOperators(context, false);
}
/// <summary>
/// Add the opcodes for type conversion operations to a context.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
public static void CreateConversionFunctions(
EncogProgramContext context)
{
FunctionFactory factory = context.Functions;
factory.AddExtension(EXTENSION_CINT);
factory.AddExtension(EXTENSION_CFLOAT);
factory.AddExtension(EXTENSION_CSTR);
factory.AddExtension(EXTENSION_CBOOL);
}
/// <summary>
/// Construct the full generator.
/// </summary>
/// <param name="theContext">The context.</param>
/// <param name="theMaxDepth">The max depth.</param>
public PrgFullGenerator(EncogProgramContext theContext,
int theMaxDepth)
: base(theContext, theMaxDepth)
{
}
/// <inheritdoc />
public bool IsPossibleReturnType(EncogProgramContext context, EPLValueType rtn)
{
if (_delIsPossibleReturnType == null)
{
return _returnValue.PossibleTypes.Contains(rtn);
}
if (!_returnValue.PossibleTypes.Contains(rtn))
{
return false;
}
return _delIsPossibleReturnType(context, rtn);
}
/// <summary>
/// Construct a const mutator.
/// </summary>
/// <param name="theContext">The program context.</param>
/// <param name="theFrequency">The frequency of mutation.</param>
/// <param name="theSigma">The sigma to use for mutation.</param>
public ConstMutation(EncogProgramContext theContext,
double theFrequency, double theSigma)
{
_frequency = theFrequency;
_sigma = theSigma;
}
/// <summary>
/// Construct a factory.
/// </summary>
/// <param name="theContext">The context to use.</param>
public PrgGenomeFactory(EncogProgramContext theContext)
{
_context = theContext;
}
/// <summary>
/// Program entry point.
/// </summary>
/// <param name="app">Holds arguments and other info.</param>
public void Execute(IExampleInterface app)
{
IMLDataSet trainingData = GenerationUtil.GenerateSingleDataRange(
(x) => (3 * Math.Pow(x, 2) + (12 * x) + 4)
, 0, 100, 1);
EncogProgramContext context = new EncogProgramContext();
context.DefineVariable("x");
StandardExtensions.CreateNumericOperators(context);
PrgPopulation pop = new PrgPopulation(context, 1000);
MultiObjectiveFitness score = new MultiObjectiveFitness();
score.AddObjective(1.0, new TrainingSetScore(trainingData));
TrainEA genetic = new TrainEA(pop, score);
genetic.ValidationMode = true;
genetic.CODEC = new PrgCODEC();
genetic.AddOperation(0.5, new SubtreeCrossover());
genetic.AddOperation(0.25, new ConstMutation(context, 0.5, 1.0));
genetic.AddOperation(0.25, new SubtreeMutation(context, 4));
genetic.AddScoreAdjuster(new ComplexityAdjustedScore(10, 20, 10, 20.0));
genetic.Rules.AddRewriteRule(new RewriteConstants());
genetic.Rules.AddRewriteRule(new RewriteAlgebraic());
genetic.Speciation = new PrgSpeciation();
(new RampedHalfAndHalf(context, 1, 6)).Generate(new EncogRandom(), pop);
genetic.ShouldIgnoreExceptions = false;
EncogProgram best = null;
genetic.ThreadCount = 1;
try
{
for (int i = 0; i < 1000; i++)
{
genetic.Iteration();
best = (EncogProgram)genetic.BestGenome;
Console.Out.WriteLine(genetic.IterationNumber + ", Error: "
+ best.Score + ",Best Genome Size:" + best.Size
+ ",Species Count:" + pop.Species.Count + ",best: " + best.DumpAsCommonExpression());
}
//EncogUtility.evaluate(best, trainingData);
Console.Out.WriteLine("Final score:" + best.Score
+ ", effective score:" + best.AdjustedScore);
Console.Out.WriteLine(best.DumpAsCommonExpression());
//pop.dumpMembers(Integer.MAX_VALUE);
//pop.dumpMembers(10);
}
catch (Exception t)
{
Console.Out.WriteLine(t.ToString());
}
finally
{
genetic.FinishTraining();
EncogFramework.Instance.Shutdown();
}
}
/// <summary>
/// Construct the population.
/// </summary>
/// <param name="theContext">The context.</param>
/// <param name="thePopulationSize">The population size.</param>
public PrgPopulation(EncogProgramContext theContext,
int thePopulationSize)
: base(thePopulationSize, new PrgGenomeFactory(theContext))
{
_context = theContext;
}
/// <summary>
/// Construct the population.
/// </summary>
/// <param name="theContext">The context.</param>
/// <param name="thePopulationSize">The population size.</param>
public PrgPopulation(EncogProgramContext theContext,
int thePopulationSize)
: base(thePopulationSize, new PrgGenomeFactory(theContext))
{
_context = theContext;
}
/// <summary>
/// Construct the subtree mutation object.
/// </summary>
/// <param name="theContext">The program context.</param>
/// <param name="theMaxDepth">The maximum depth.</param>
public SubtreeMutation(EncogProgramContext theContext,
int theMaxDepth)
{
Generator = new PrgGrowGenerator(theContext, theMaxDepth);
_maxDepth = theMaxDepth;
}
/// <summary>
/// Construct a factory.
/// </summary>
/// <param name="theContext">The context to use.</param>
public PrgGenomeFactory(EncogProgramContext theContext)
{
_context = theContext;
}
/// <summary>
/// Add the opcodes for string operations to a context.
/// </summary>
/// <param name="context">
/// <The context to add the opcodes to./ param>
public static void CreateStringFunctions(EncogProgramContext context)
{
FunctionFactory factory = context.Functions;
factory.AddExtension(EXTENSION_LENGTH);
factory.AddExtension(EXTENSION_FORMAT);
factory.AddExtension(EXTENSION_LEFT);
factory.AddExtension(EXTENSION_RIGHT);
}
/// <summary>
/// Add the opcodes for numeric operations to a context, do not use protected
/// division.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
public static void CreateNumericOperators(EncogProgramContext context)
{
CreateNumericOperators(context, false);
}
/// <summary>
/// Add the opcodes for trig functions operations to a context.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
public static void CreateTrigFunctions(EncogProgramContext context)
{
FunctionFactory factory = context.Functions;
factory.AddExtension(EXTENSION_ACOS);
factory.AddExtension(EXTENSION_ASIN);
factory.AddExtension(EXTENSION_ATAN);
factory.AddExtension(EXTENSION_ATAN2);
factory.AddExtension(EXTENSION_COS);
factory.AddExtension(EXTENSION_COSH);
factory.AddExtension(EXTENSION_SIN);
factory.AddExtension(EXTENSION_SINH);
factory.AddExtension(EXTENSION_TAN);
factory.AddExtension(EXTENSION_TANH);
}
/// <summary>
/// Add all known opcodes to a context.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
public static void CreateAll(EncogProgramContext context)
{
FunctionFactory factory = context.Functions;
foreach (IProgramExtensionTemplate temp in EncogOpcodeRegistry.Instance
.FindAllOpcodes())
{
factory.AddExtension(temp);
}
}
/// <summary>
/// Construct a const mutator.
/// </summary>
/// <param name="theContext">The program context.</param>
/// <param name="theFrequency">The frequency of mutation.</param>
/// <param name="theSigma">The sigma to use for mutation.</param>
public ConstMutation(EncogProgramContext theContext,
double theFrequency, double theSigma)
{
_frequency = theFrequency;
_sigma = theSigma;
}
/// <summary>
/// Add the opcodes for basic operations to a context.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
public static void CreateBasicFunctions(EncogProgramContext context)
{
FunctionFactory factory = context.Functions;
factory.AddExtension(EXTENSION_ABS);
factory.AddExtension(EXTENSION_CEIL);
factory.AddExtension(EXTENSION_EXP);
factory.AddExtension(EXTENSION_FLOOR);
factory.AddExtension(EXTENSION_LOG);
factory.AddExtension(EXTENSION_LOG10);
factory.AddExtension(EXTENSION_MAX);
factory.AddExtension(EXTENSION_MIN);
factory.AddExtension(EXTENSION_POWFN);
factory.AddExtension(EXTENSION_RANDOM);
factory.AddExtension(EXTENSION_ROUND);
factory.AddExtension(EXTENSION_SQRT);
factory.AddExtension(EXTENSION_CLAMP);
}
/// <summary>
/// Construct the grow generator.
/// </summary>
/// <param name="theContext">The program context.</param>
/// <param name="theMaxDepth">The max depth.</param>
public PrgGrowGenerator(EncogProgramContext theContext,
int theMaxDepth)
: base(theContext, theMaxDepth)
{
}
/// <summary>
/// Add the opcodes for boolean operations to a context.
/// </summary>
/// <param name="context">The context to add the opcodes to.</param>
public static void CreateBooleanOperators(EncogProgramContext context)
{
FunctionFactory factory = context.Functions;
factory.AddExtension(EXTENSION_AND);
factory.AddExtension(EXTENSION_OR);
factory.AddExtension(EXTENSION_EQUAL);
factory.AddExtension(EXTENSION_LT);
factory.AddExtension(EXTENSION_GT);
factory.AddExtension(EXTENSION_LTE);
factory.AddExtension(EXTENSION_GTE);
factory.AddExtension(EXTENSION_IFF);
factory.AddExtension(EXTENSION_NOT_EQUAL);
factory.AddExtension(EXTENSION_NOT);
}
/// <summary>
/// Find all opcodes that match the search criteria.
/// </summary>
/// <param name="types">The return types to consider.</param>
/// <param name="context">The program context.</param>
/// <param name="includeTerminal">True, to include the terminals.</param>
/// <param name="includeFunction">True, to include the functions.</param>
/// <returns>The opcodes found.</returns>
public IList<IProgramExtensionTemplate> FindOpcodes(
IList<EPLValueType> types, EncogProgramContext context,
bool includeTerminal, bool includeFunction)
{
IList<IProgramExtensionTemplate> result = new List<IProgramExtensionTemplate>();
foreach (IProgramExtensionTemplate temp in _opcodes)
{
foreach (EPLValueType rtn in types)
{
// it is a possible return type, but given our variables, is it
// possible
if (temp.IsPossibleReturnType(context, rtn))
{
if (temp.ChildNodeCount == 0 && includeTerminal)
{
result.Add(temp);
}
else if (includeFunction)
{
result.Add(temp);
}
}
}
}
return result;
}
/// <summary>
/// Construct the subtree mutation object.
/// </summary>
/// <param name="theContext">The program context.</param>
/// <param name="theMaxDepth">The maximum depth.</param>
public SubtreeMutation(EncogProgramContext theContext,
int theMaxDepth)
{
Generator = new PrgGrowGenerator(theContext, theMaxDepth);
_maxDepth = theMaxDepth;
}
