You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.7 KiB
61 lines
1.7 KiB
2 months ago
|
// This file is part of OpenCV project.
|
||
|
|
// It is subject to the license terms in the LICENSE file found in the top-level directory
|
||
|
|
// of this distribution and at http://opencv.org/license.html.
|
||
|
|
|
||
|
|
#ifndef OPENCV_ML_INL_HPP
|
||
|
|
#define OPENCV_ML_INL_HPP
|
||
|
|
|
||
|
|
namespace cv { namespace ml {
|
||
|
|
|
||
|
|
// declared in ml.hpp
|
||
|
|
template<class SimulatedAnnealingSolverSystem>
|
||
|
|
int simulatedAnnealingSolver(SimulatedAnnealingSolverSystem& solverSystem,
|
||
|
|
double initialTemperature, double finalTemperature, double coolingRatio,
|
||
|
|
size_t iterationsPerStep,
|
||
|
|
CV_OUT double* lastTemperature,
|
||
|
|
cv::RNG& rngEnergy
|
||
|
|
)
|
||
|
|
{
|
||
|
|
CV_Assert(finalTemperature > 0);
|
||
|
|
CV_Assert(initialTemperature > finalTemperature);
|
||
|
|
CV_Assert(iterationsPerStep > 0);
|
||
|
|
CV_Assert(coolingRatio < 1.0f);
|
||
|
|
double Ti = initialTemperature;
|
||
|
|
double previousEnergy = solverSystem.energy();
|
||
|
|
int exchange = 0;
|
||
|
|
while (Ti > finalTemperature)
|
||
|
|
{
|
||
|
|
for (size_t i = 0; i < iterationsPerStep; i++)
|
||
|
|
{
|
||
|
|
solverSystem.changeState();
|
||
|
|
double newEnergy = solverSystem.energy();
|
||
|
|
if (newEnergy < previousEnergy)
|
||
|
|
{
|
||
|
|
previousEnergy = newEnergy;
|
||
|
|
exchange++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
double r = rngEnergy.uniform(0.0, 1.0);
|
||
|
|
if (r < std::exp(-(newEnergy - previousEnergy) / Ti))
|
||
|
|
{
|
||
|
|
previousEnergy = newEnergy;
|
||
|
|
exchange++;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
solverSystem.reverseState();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Ti *= coolingRatio;
|
||
|
|
}
|
||
|
|
if (lastTemperature)
|
||
|
|
*lastTemperature = Ti;
|
||
|
|
return exchange;
|
||
|
|
}
|
||
|
|
|
||
|
|
}} //namespace
|
||
|
|
|
||
|
|
#endif // OPENCV_ML_INL_HPP
|