WriteBest.h

//
// pomocni operator za ispis trenutno najboljeg rjesenja
//
 
bool evaluateVerbose;
 
class WriteBest : public Operator
{
private:
    StateP state_;
    uint freq, maxGen, eval;
    double fitnessVal;
    bool termEval, termFitness, termStagn, termGen;
 
public:
 
    bool initialize(StateP state)
    {
        termEval = termFitness = termStagn = termGen = false;
 
        if(state->getRegistry()->isModified("term.eval"))
            termEval = true;
        if(state->getRegistry()->isModified("term.stagnation"))
            termStagn = true;
        if(state->getRegistry()->isModified("term.fitnessval"))
            termFitness = true;
        if(state->getRegistry()->isModified("term.maxgen"))
            termGen = true;
 
        state_ = state;
        voidP sptr = state->getRegistry()->getEntry("term.stagnation");
        freq = *((uint*)sptr.get());
 
        sptr = state->getRegistry()->getEntry("term.maxgen");
        maxGen = *((uint*)sptr.get());
 
        sptr = state->getRegistry()->getEntry("term.eval");
        eval = *((uint*)sptr.get());
 
        sptr = state->getRegistry()->getEntry("term.fitnessval");
        fitnessVal = *((double*)sptr.get());
 
        return true;
    }
 
    bool operate(StateP state)
    {
        ECF_LOG(state, 3, "Best in " + uint2str(state->getGenerationNo()));
        IndividualP bestInd = state->getPopulation()->getHof()->getBest().at(0);
        ECF_LOG(state, 3, bestInd->toString());
 
        bool output = false;
        uint currentGen = state->getGenerationNo();
        double minFitness = state->getStats()->getFitnessMin();
        double maxFitness = state->getStats()->getFitnessMax();
 
        if(termGen && currentGen >= maxGen)
            output = true;
 
        if(termStagn && (currentGen - state->getPopulation()->getHof()->getLastChange()) > freq)
            output = true;
 
        if(termEval && state->getEvaluations() >= eval)
            output = true;
 
        if(termFitness && (fitnessVal >= minFitness && fitnessVal <= maxFitness))
            output = true;
 
        if (output) {
            std::vector<IndividualP> hof = state->getHoF()->getBest();
            IndividualP ind = hof[0];
 
            evaluateVerbose = true;
            state->getAlgorithm()->evaluate(ind);
            evaluateVerbose = false;
 
            ECF_LOG(state, 1, ind->toString());
        }
 
        return true;
    }
};