calc.cc

标准的GP源代码,由Andy Singleton维护

}

void gp::LoadTests(istream& in)
{ 
test* t = new test (this, in);

t->write(this);
}

void gp::WriteTreeName(int tree, ostream& ostr)
{switch(tree)
	 {
#ifndef RPN
	 case ans:      ostr<< "ans";      break;
#endif
	 case num:      ostr<< "num";      break;
	 case plus:     ostr<< "plus";     break;
	 case minus:    ostr<< "minus";    break;
	 case times:    ostr<< "times";    break;
	 case divide:   ostr<< "div";      break;
#ifndef RPN
	 case open:     ostr<< "open";     break;
	 case close:    ostr<< "close";    break;
#endif
#ifndef KARP2
	 case adf1:     ostr<< "adf1";     break;
	 case adf2:     ostr<< "adf2";     break;
	 case adf3:     ostr<< "adf3";     break;
#endif
	 default:       ostr<< "ERROR322"; break;
	 }
}//end queue::WriteTreeName()

BOOL gp::TreeNameMatch(int tree, char* s)
{switch(tree)
	 {
#ifndef RPN
	 case ans:        return strcmp("ans",  s);
#endif
	 case num:        return strcmp("num",  s);
	 case plus:       return strcmp("plus",  s);
	 case minus:      return strcmp("minus",  s);
	 case times:      return strcmp("times",  s);
	 case divide:     return strcmp("div",  s);
#ifndef RPN
	 case open:       return strcmp("open",  s);
	 case close:      return strcmp("close",  s);
#endif
#ifndef KARP2
	 case adf1:       return strcmp("adf1",  s);
	 case adf2:       return strcmp("adf2",  s);
	 case adf3:       return strcmp("adf3",  s);
#endif
	 default:       return FALSE;
	 }
}//end queue::TreeNameMatch()

int static_check_loop_check = 0;
int gp::static_check(Chrome* chrome, int tree)
// Perform static analysis of new chromsome. Just changed in tree
{
return 0; //Uncomment to disable static_check//ie ok
}//end queue::static_check


void gp::write_stats(ostream& out)
{
}

retval random_value(int& seed) //seed must be > 0
{
//return retval(F_tan_spread*tan(float(intrnd(seed) % 3141)/1000.0));
return retval(intrnd(seed)); //default -- not used
}

void myfitnessvalue::clear()
{
//NB clearing whole of myfitnessclass cause gcc produced code to crash

//In theory dont need to do this most of the time since on copy or
//crossover will soon be overwritten with data from parent

//cout<<"Sizeof myfitnessvalue "<<sizeof(*this)<<endl;

#ifdef PARETO
memset(hits,0,sizeof(hits));
//memset(chain,0,sizeof(chain));
#endif
mem_used = 0;
Memory_Errors = 0;
#ifdef TRACE_RUN
#ifndef STORE_FIT
memset( ok,0,sizeof(ok));
memset(nak,0,sizeof(nak));
#endif
#endif
#ifdef STORE_FIT
memset(test_data,0,sizeof(test_data));
#endif
}

void test::update_passed(BOOL passed[], int first_test, int last_test) const
{
for(int t = first_test; t<last_test; t++) {
	passed[t] = TRUE; }
}//end test::update_passed


void test::set_max_fitness() const
{//we never stop
  max_fitness = FLT_MAX;

//check required for update_population_fitness(). Do it here because dont want
//it to abort the program run possibly after several hours or running

assert (num_ellite_pareto<=last_op+1); //since we dont change rank info
}

#ifndef STORE_FIT
void test::update_seq_score(Chrome* chrome, int s, //test_sequence
			    int seqpasses) const
{
const ptrmyfitnessvalue fitptr = ptrmyfitnessvalue (chrome->nfitness);

fitptr->Memory_Errors += Memory_errors;
//Ntests_run set by argument of final_score
//mem_used set by final_score calling cells_written
}//end test::update_seq_score
#else /*STORE_FIT*/
void test::update_seq_score(Chrome* chrome, int s, //test_sequence
			    int seqpasses, int tests) const
{
const ptrmyfitnessvalue fitptr = ptrmyfitnessvalue (chrome->nfitness);

fitptr->test_data[s].mem_used = cells_written();
fitptr->test_data[s].memory_errors = (Memory_errors > 255)? 255: Memory_errors;

fitptr->test_data[s].Ntests_run = tests;

#ifdef TIMINGS
total_cpu += ThisTimmer->timmer(); //for statistical purposes only
fitptr->test_data[s].cpu_time =
	      (ThisTimmer->timmer() < myfitnessvalue::per_test::cpu_time_max)? 
	       ThisTimmer->timmer() : myfitnessvalue::per_test::cpu_time_max;
#endif
#ifdef TRACE_RUN
fitptr->test_data[s].trace.trace_pack(ThisTrace);
#endif

fitptr->test_data[s].passes = seqpasses;

}//end test::update_seq_score

int myfitnessvalue::Memory_errors() const {
int count = 0;
for(int s=0; s<NUM_TEST_SEQUENCES;s++) {
	count += test_data[s].memory_errors;}
return count;
}
#endif /*STORE_FIT*/


#ifdef PARETO
void update_population_fitness()
//now that a solution has been found new rules apply for fitness calculation
//scan whole of population and update each fitness value in line with new
//rules. Ie remove cpu and memory penalty thresholds
{
if(ThisPop==NULL) return;

cout << "Removing cpu penalty threshold " << endl;

for(UINT j=0;(j<ThisPop->nexteval-1)&&(j<ThisPop->popsize);j++) {
	const ptrmyfitnessvalue fitptr = 
		                 ptrmyfitnessvalue(ThisPop->pop[j]->nfitness);
//No mem_used penalty
//	fitptr->hits[last_op+NUM_OTHERS] = -scoretype(fitptr->mem_used);

#ifdef TIMINGS
	if((fitptr!=NULL)&&(fitptr->Ntests_run != 0)) {
	fitptr->hits[last_op+1] = -(fitptr->cpu_time/fitptr->Ntests_run);
        }//end if have determined a fitness value before
#endif
}//end scan whole population
}//end update_population_fitness()
#endif

int minmem_found; //lowest memory used by any solution so far
int minmerr_found;//lowest memory errors by any solution so far
int mincpu_found; //lowest cpu used by any solution reported so far


#ifdef STORE_FIT
float test::final_score(Chrome* chrome) const
#else
float test::final_score(Chrome* chrome, int passes, int tests) const
#endif
{
const ptrmyfitnessvalue fitptr = ptrmyfitnessvalue (chrome->nfitness);

#ifdef STORE_FIT
fitptr->mem_used = 0;
fitptr->Ntests_run = 0;
fitptr->cpu_time = 0;
int passes = 0;
//memset(fitptr->hits,0,sizeof(fitptr->hits));
//memset(fitptr->ok,  0,sizeof(fitptr->ok));
//memset(fitptr->nak, 0,sizeof(fitptr->nak));

ThisTest->unpack_hits(chrome);

for(int s=0; s<NUM_TEST_SEQUENCES;s++) {

if(fitptr->mem_used < fitptr->test_data[s].mem_used)
	fitptr->mem_used = fitptr->test_data[s].mem_used;

fitptr->Ntests_run += fitptr->test_data[s].Ntests_run;

#ifdef TIMINGS
fitptr->cpu_time += fitptr->test_data[s].cpu_time;
#endif
//#ifdef TRACE_RUN
//for(int t=0; t<NUM_TREES;t++) {
//	fitptr->ok[t]  += fitptr->test_data[s].trace.unpack_ok(t);  //add overflow
//	fitptr->nak[t] += fitptr->test_data[s].trace.unpack_nak(t); //checks!
//}
//#endif

passes += fitptr->test_data[s].passes;
}//endfor each test_sequence


#else /*STORE_FIT*/
fitptr->mem_used = cells_written();
fitptr->Ntests_run = tests;

#ifdef TIMINGS
fitptr->cpu_time = ThisTimmer->timmer();
fitptr->hits[last_op+1]  = ((sol_found==FALSE) &&
		    ((fitptr->cpu_time/fitptr->Ntests_run)<=cpu_penalty_bot))?
	           0 : -(fitptr->cpu_time/fitptr->Ntests_run);
#endif /*TIMINGS*/
#ifdef PARETO
//chrome->nfitness->fvalue = float(fitptr->hits[0]);
chrome->nfitness->fvalue = float(passes);
#endif
#endif /*STORE_FIT*/

tests_apparently_run += fitptr->Ntests_run;

BOOL display_solution = FALSE;

if(passes==max_passes[current_phase]) {
	num_sol_found++;
	if(num_sol_found==1) {
		display_solution = TRUE;
		minmem_found = fitptr->mem_used;
		minmerr_found = fitptr->Memory_errors();
#ifdef TIMINGS
		mincpu_found = fitptr->cpu_time;
#endif
	}
	else {
		if (fitptr->mem_used < minmem_found) {
			minmem_found = fitptr->mem_used;
			display_solution = TRUE; }

		int memerrs = fitptr->Memory_errors();
		if (memerrs < minmerr_found) {
			minmerr_found = memerrs;
			display_solution = TRUE; }
#ifdef TIMINGS		
		if ((fitptr->cpu_time/1000) < (mincpu_found/1000)) {
			mincpu_found = fitptr->cpu_time;
			display_solution = TRUE; }
#endif /*TIMINGS*/
	}//endelse

	if((current_phase >= (num_phases-1)) && (!sol_found)) {
		sol_found = TRUE; 
#ifdef TIMINGS
		fitptr->hits[last_op+1] = -(fitptr->cpu_time/fitptr->Ntests_run);
#endif
              update_population_fitness(); //remove cpu and memory thresholds
	}

};//endif passes all tests ie a solution

ptrmyfitnessvalue(chrome->nfitness)->update_rank();

if(display_solution && (ThisPop != NULL)) {
	cout << "\n\nafter " << ThisPop->gencount+1 << endl;
	fitptr->write();
	chrome->write(PRETTY_NONE,cout); cout<<endl;
}

return chrome->nfitness->fvalue;

}//end test::final_score


int end_gens()
{
	//we never move on to next test phase
	return 0;
}//end_gens


BOOL IsLoop(int funcnum) {
return (funcnum==ThisProblem->forwhile_funcnum);
}

int IsBranch(int funcnum) {
	if(funcnum==ifmatch_funcnum)
		return 3;

	else if(funcnum==ifopen_funcnum  ||
		funcnum==ifempty_funcnum ||
		funcnum==ifeq_funcnum    ||
		funcnum==iflte_funcnum     )
		return 2;
	else
		return 0;
}

int Chrome::ChooseCrossTree(Chrome* second_parent) {
//not actually in use
return rnd(NUM_TREES);
} //end Chrome::ChooseCrossTree


#ifdef MAXTREEDEPTH
void gp::ProbLPStats(int f[][NUM_TREES][MAXTREEDEPTH+1], int pcount[pcount_size] ) 
#else
void gp::ProbLPStats(int f[][NUM_TREES], int pcount[pcount_size] ) 
#endif
{
pcount[0] += 1;//not used
pcount[1] += 1;//not used
pcount[2] += 1;//not used
pcount[3] += 1;//not used

}//end ProbLPStats

int gp::ProbLTStat(int tree, int start, int length, node* expr )
{
return -1; //ignore
}//end ProbLTStat