1#include "../ECF_base.h"
3#include "TreeMutGauss.h"
7#include "boost/random/normal_distribution.hpp"
15 myGenotype_->registerParameter(state,
"mut.gauss", (voidP)
new double(0), ECF::DOUBLE);
21 voidP sptr =
myGenotype_->getParameterValue(state,
"mut.gauss");
24 engine_.seed((uint32_t) time(NULL));
38 iNode = state_->getRandomizer()->getRandomInteger((
int) tree->size());
40 }
while((name = tree->at(iNode)->primitive_->getName()).substr(0, 2) != DBL_PREFIX && tries < 4);
42 if(name.substr(0, 2) != DBL_PREFIX) {
43 ECF_LOG(state_, 5,
"TreeMutGauss not successful.");
48 PrimitiveP oldPrim = tree->at(iNode)->primitive_;
49 tree->at(iNode)->primitive_->getValue(&oldValue);
50 std::string oldName = tree->at(iNode)->primitive_->getName();
54 boost::normal_distribution<double> N(0, 1);
60 double offset = N.operator () <boost::lagged_fibonacci607>(engine_);
61 double newValue = oldValue + offset;
68 newName = DBL_PREFIX + newName;
70 oldPrim->setName(newName);
71 oldPrim->setValue(&newValue);
75 std::stringstream log;
76 log <<
"TreeMutGauss successful (oldNode = " << oldName <<
", newNode = " << newName <<
")";
77 ECF_LOG(state_, 5, log.str());
double probability_
probability of usage of this mutation operator
GenotypeP myGenotype_
pointer to the Genotype that defines this MutationOp
Tree class - implements genotype as a tree.
bool mutate(GenotypeP gene)
Performs mutation of a genotype object. The genotype object must be initialized!
bool initialize(StateP)
Initialize mutation operator. Called before first mutation operation.
void registerParameters(StateP)
Register parameters with the system. Called before MutationOp::initialize.