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/* How does the cube fare with unbiased extent sampling?
*/
#include <stdio.h>
#include <gsl/gsl_vector.h>
#include "oracles.h"
#include "extent-sampling.h"
#define DIMENSION_START 5
#define DIMENSION_STEP 5
#define DIMENSION_STOP 50
#define TRIALS 100
#define RTOL 0.1
#define EDGE 1.0
double cube_oracle (const gsl_vector* x) {
return cube_extent_oracle(x, EDGE);
}
int main ()
{
gsl_rng_env_setup();
gsl_rng* r = gsl_rng_alloc(gsl_rng_default);
FILE* fp = fopen("cube-window.dat", "w");
printf("dimension\tsamples\n");
fprintf(fp, "dimension\tsamples\n");
for (int dim=DIMENSION_START; dim<=DIMENSION_STOP; dim+=DIMENSION_STEP) {
unsigned int total_samples=0;
for (int i=0; i<TRIALS; i++) {
unsigned int number_of_samples;
volume_window(cube_oracle, cube_true_volume(EDGE, dim), r, dim, RTOL, &number_of_samples);
total_samples += number_of_samples;
}
double average_samples = ((double)total_samples)/TRIALS;
printf("%d\t%g\n", dim, average_samples);
fprintf(fp, "%d\t%g\n", dim, average_samples);
fflush(NULL);
}
fclose(fp);
gsl_rng_free(r);
return 0;
}
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