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nojhan 2011-09-15 17:27:46 +02:00
commit 37a2c68b69
4 changed files with 142 additions and 192 deletions
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53
edo/src/edoSampler.h
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@ -30,7 +30,7 @@ Authors:
#include <eoFunctor.h> #include <eoFunctor.h>
#include "edoBounder.h" #include "edoRepairer.h"
#include "edoBounderNo.h" #include "edoBounderNo.h"
//! edoSampler< D > //! edoSampler< D >
@ -41,47 +41,34 @@ class edoSampler : public eoUF< D&, typename D::EOType >
public: public:
typedef typename D::EOType EOType; typedef typename D::EOType EOType;
edoSampler(edoBounder< EOType > & bounder) edoSampler(edoRepairer< EOType > & repairer)
: /*_dummy_bounder(),*/ _bounder(bounder) : _dummy_repairer(), _repairer(repairer)
{} {}
/*
edoSampler() edoSampler()
: _dummy_bounder(), _bounder( _dummy_bounder ) : _dummy_repairer(), _repairer( _dummy_repairer )
{} {}
*/
// virtual EOType operator()( D& ) = 0 (provided by eoUF< A1, R >) // virtual EOType operator()( D& ) = 0 (provided by eoUF< A1, R >)
EOType operator()( D& distrib ) EOType operator()( D& distrib )
{ {
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
// (coordinates in n dimension)
// x = {x1, x2, ..., xn}
// the sample method is implemented in the derivated class
EOType solution(sample(distrib));
//------------------------------------------------------------- // Now we are bounding the distribution thanks to min and max
// Point we want to sample to get higher a set of points // parameters.
// (coordinates in n dimension) _repairer(solution);
// x = {x1, x2, ..., xn}
// the sample method is implemented in the derivated class
//-------------------------------------------------------------
EOType solution(sample(distrib)); return solution;
//-------------------------------------------------------------
//-------------------------------------------------------------
// Now we are bounding the distribution thanks to min and max
// parameters.
//-------------------------------------------------------------
_bounder(solution);
//-------------------------------------------------------------
return solution;
} }
protected: protected:
@ -89,10 +76,10 @@ protected:
virtual EOType sample( D& ) = 0; virtual EOType sample( D& ) = 0;
private: private:
//edoBounderNo<EOType> _dummy_bounder; edoBounderNo<EOType> _dummy_repairer;
//! Bounder functor //! repairer functor
edoBounder< EOType > & _bounder; edoRepairer< EOType > & _repairer;
}; };

51
edo/src/edoSamplerNormalMono.h
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@ -45,46 +45,31 @@ class edoSamplerNormalMono : public edoSampler< edoNormalMono< EOT > >
public: public:
typedef typename EOT::AtomType AtomType; typedef typename EOT::AtomType AtomType;
edoSamplerNormalMono( edoBounder< EOT > & bounder ) edoSamplerNormalMono( edoRepairer<EOT> & repairer ) : edoSampler( repairer) {}
: edoSampler< edoNormalMono< EOT > >( bounder )
{}
EOT sample( edoNormalMono< EOT >& distrib ) EOT sample( edoNormalMono< EOT >& distrib )
{ {
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
// (coordinates in n dimension)
// x = {x1, x2, ..., xn}
EOT solution;
// Sampling all dimensions
for (unsigned int i = 0; i < size; ++i)
{
AtomType mean = distrib.mean()[i];
AtomType variance = distrib.variance()[i];
AtomType random = rng.normal(mean, variance);
//------------------------------------------------------------- assert(variance >= 0);
// Point we want to sample to get higher a set of points
// (coordinates in n dimension)
// x = {x1, x2, ..., xn}
//-------------------------------------------------------------
EOT solution; solution.push_back(random);
}
//------------------------------------------------------------- return solution;
//-------------------------------------------------------------
// Sampling all dimensions
//-------------------------------------------------------------
for (unsigned int i = 0; i < size; ++i)
{
AtomType mean = distrib.mean()[i];
AtomType variance = distrib.variance()[i];
AtomType random = rng.normal(mean, variance);
assert(variance >= 0);
solution.push_back(random);
}
//-------------------------------------------------------------
return solution;
} }
}; };

160
edo/src/edoSamplerNormalMulti.h
View file

@ -40,136 +40,138 @@ class edoSamplerNormalMulti : public edoSampler< edoNormalMulti< EOT > >
public: public:
typedef typename EOT::AtomType AtomType; typedef typename EOT::AtomType AtomType;
edoSamplerNormalMulti( edoRepairer<EOT> & repairer ) : edoSampler( repairer) {}
class Cholesky class Cholesky
{ {
public: public:
Cholesky( const ublas::symmetric_matrix< AtomType, ublas::lower >& V) Cholesky( const ublas::symmetric_matrix< AtomType, ublas::lower >& V)
{ {
unsigned int Vl = V.size1(); unsigned int Vl = V.size1();
assert(Vl > 0); assert(Vl > 0);
unsigned int Vc = V.size2(); unsigned int Vc = V.size2();
assert(Vc > 0); assert(Vc > 0);
assert( Vl == Vc ); assert( Vl == Vc );
_L.resize(Vl); _L.resize(Vl);
unsigned int i,j,k; unsigned int i,j,k;
// first column // first column
i=0; i=0;
// diagonal // diagonal
j=0; j=0;
_L(0, 0) = sqrt( V(0, 0) ); _L(0, 0) = sqrt( V(0, 0) );
// end of the column // end of the column
for ( j = 1; j < Vc; ++j ) for ( j = 1; j < Vc; ++j )
{ {
_L(j, 0) = V(0, j) / _L(0, 0); _L(j, 0) = V(0, j) / _L(0, 0);
} }
// end of the matrix // end of the matrix
for ( i = 1; i < Vl; ++i ) // each column for ( i = 1; i < Vl; ++i ) // each column
{ {
// diagonal // diagonal
double sum = 0.0; double sum = 0.0;
for ( k = 0; k < i; ++k) for ( k = 0; k < i; ++k)
{ {
sum += _L(i, k) * _L(i, k); sum += _L(i, k) * _L(i, k);
} }
_L(i,i) = sqrt( fabs( V(i,i) - sum) ); _L(i,i) = sqrt( fabs( V(i,i) - sum) );
for ( j = i + 1; j < Vl; ++j ) // rows for ( j = i + 1; j < Vl; ++j ) // rows
{ {
// one element // one element
sum = 0.0; sum = 0.0;
for ( k = 0; k < i; ++k ) for ( k = 0; k < i; ++k )
{ {
sum += _L(j, k) * _L(i, k); sum += _L(j, k) * _L(i, k);
} }
_L(j, i) = (V(j, i) - sum) / _L(i, i); _L(j, i) = (V(j, i) - sum) / _L(i, i);
} }
} }
} }
const ublas::symmetric_matrix< AtomType, ublas::lower >& get_L() const {return _L;} const ublas::symmetric_matrix< AtomType, ublas::lower >& get_L() const {return _L;}
private: private:
ublas::symmetric_matrix< AtomType, ublas::lower > _L; ublas::symmetric_matrix< AtomType, ublas::lower > _L;
}; };
edoSamplerNormalMulti( edoBounder< EOT > & bounder ) edoSamplerNormalMulti( edoBounder< EOT > & bounder )
: edoSampler< edoNormalMulti< EOT > >( bounder ) : edoSampler< edoNormalMulti< EOT > >( bounder )
{} {}
EOT sample( edoNormalMulti< EOT >& distrib ) EOT sample( edoNormalMulti< EOT >& distrib )
{ {
unsigned int size = distrib.size(); unsigned int size = distrib.size();
assert(size > 0); assert(size > 0);
//------------------------------------------------------------- //-------------------------------------------------------------
// Cholesky factorisation gererating matrix L from covariance // Cholesky factorisation gererating matrix L from covariance
// matrix V. // matrix V.
// We must use cholesky.get_L() to get the resulting matrix. // We must use cholesky.get_L() to get the resulting matrix.
// //
// L = cholesky decomposition of varcovar // L = cholesky decomposition of varcovar
//------------------------------------------------------------- //-------------------------------------------------------------
Cholesky cholesky( distrib.varcovar() ); Cholesky cholesky( distrib.varcovar() );
ublas::symmetric_matrix< AtomType, ublas::lower > L = cholesky.get_L(); ublas::symmetric_matrix< AtomType, ublas::lower > L = cholesky.get_L();
//------------------------------------------------------------- //-------------------------------------------------------------
//------------------------------------------------------------- //-------------------------------------------------------------
// T = vector of size elements drawn in N(0,1) rng.normal(1.0) // T = vector of size elements drawn in N(0,1) rng.normal(1.0)
//------------------------------------------------------------- //-------------------------------------------------------------
ublas::vector< AtomType > T( size ); ublas::vector< AtomType > T( size );
for ( unsigned int i = 0; i < size; ++i ) for ( unsigned int i = 0; i < size; ++i )
{ {
T( i ) = rng.normal( 1.0 ); T( i ) = rng.normal( 1.0 );
} }
//------------------------------------------------------------- //-------------------------------------------------------------
//------------------------------------------------------------- //-------------------------------------------------------------
// LT = prod( L, T ) // LT = prod( L, T )
//------------------------------------------------------------- //-------------------------------------------------------------
ublas::vector< AtomType > LT = ublas::prod( L, T ); ublas::vector< AtomType > LT = ublas::prod( L, T );
//------------------------------------------------------------- //-------------------------------------------------------------
//------------------------------------------------------------- //-------------------------------------------------------------
// solution = means + LT // solution = means + LT
//------------------------------------------------------------- //-------------------------------------------------------------
ublas::vector< AtomType > mean = distrib.mean(); ublas::vector< AtomType > mean = distrib.mean();
ublas::vector< AtomType > ublas_solution = mean + LT; ublas::vector< AtomType > ublas_solution = mean + LT;
EOT solution( size ); EOT solution( size );
std::copy( ublas_solution.begin(), ublas_solution.end(), solution.begin() ); std::copy( ublas_solution.begin(), ublas_solution.end(), solution.begin() );
//------------------------------------------------------------- //-------------------------------------------------------------
return solution; return solution;
} }
}; };

56
edo/src/edoSamplerUniform.h
View file

@ -44,52 +44,28 @@ class edoSamplerUniform : public edoSampler< edoUniform< EOT > >
public: public:
typedef D Distrib; typedef D Distrib;
edoSamplerUniform(edoBounder< EOT > & bounder) edoSamplerUniform( edoRepairer<EOT> & repairer ) : edoSampler( repairer) {}
: edoSampler< edoUniform<EOT> >(bounder) // FIXME: Why D is not used here ?
{}
/*
edoSamplerUniform()
: edoSampler< edoUniform<EOT> >()
{}
*/
EOT sample( edoUniform< EOT >& distrib ) EOT sample( edoUniform< EOT >& distrib )
{ {
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
// (coordinates in n dimension)
// x = {x1, x2, ..., xn}
EOT solution;
//------------------------------------------------------------- // Sampling all dimensions
// Point we want to sample to get higher a set of points for (unsigned int i = 0; i < size; ++i)
// (coordinates in n dimension) {
// x = {x1, x2, ..., xn} double min = distrib.min()[i];
//------------------------------------------------------------- double max = distrib.max()[i];
double random = rng.uniform(min, max);
solution.push_back(random);
}
EOT solution; return solution;
//-------------------------------------------------------------
//-------------------------------------------------------------
// Sampling all dimensions
//-------------------------------------------------------------
for (unsigned int i = 0; i < size; ++i)
{
double min = distrib.min()[i];
double max = distrib.max()[i];
double random = rng.uniform(min, max);
assert(min <= random && random <= max);
solution.push_back(random);
}
//-------------------------------------------------------------
return solution;
} }
}; };