nojhan/eodev
Archived
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

BUGFIX: should use the standard deviation when sampling a mono-normal law, because it have the same scale than the mean

Browse source
This commit is contained in:
nojhan 2011-11-09 11:38:40 +01:00
commit 1af6715ddc
1 changed files with 8 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

12
edo/src/edoSamplerNormalMono.h
View file

@ -28,6 +28,8 @@ Authors:
#ifndef _edoSamplerNormalMono_h #ifndef _edoSamplerNormalMono_h
#define _edoSamplerNormalMono_h #define _edoSamplerNormalMono_h
#include <cmath>
#include <utils/eoRNG.h> #include <utils/eoRNG.h>
#include "edoSampler.h" #include "edoSampler.h"
@ -52,19 +54,17 @@ public:
unsigned int size = distrib.size(); unsigned int size = distrib.size();
assert(size > 0); assert(size > 0);
// Point we want to sample to get higher a set of points // The point we want to draw
// (coordinates in n dimension) // (coordinates in n dimension)
// x = {x1, x2, ..., xn} // x = {x1, x2, ..., xn}
EOT solution; EOT solution;
// Sampling all dimensions // Sampling all dimensions
for (unsigned int i = 0; i < size; ++i) for (unsigned int i = 0; i < size; ++i) {
{
AtomType mean = distrib.mean()[i]; AtomType mean = distrib.mean()[i];
AtomType variance = distrib.variance()[i]; AtomType variance = distrib.variance()[i];
AtomType random = rng.normal(mean, variance); // should use the standard deviation, which have the same scale than the mean
AtomType random = rng.normal(mean, sqrt(variance) );
assert(variance >= 0);
solution.push_back(random); solution.push_back(random);
} }