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61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
3 years ago
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// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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#ifndef OPENCV_ML_INL_HPP
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#define OPENCV_ML_INL_HPP
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namespace cv { namespace ml {
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// declared in ml.hpp
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template<class SimulatedAnnealingSolverSystem>
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int simulatedAnnealingSolver(SimulatedAnnealingSolverSystem& solverSystem,
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double initialTemperature, double finalTemperature, double coolingRatio,
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size_t iterationsPerStep,
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CV_OUT double* lastTemperature,
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cv::RNG& rngEnergy
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)
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{
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CV_Assert(finalTemperature > 0);
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CV_Assert(initialTemperature > finalTemperature);
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CV_Assert(iterationsPerStep > 0);
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CV_Assert(coolingRatio < 1.0f);
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double Ti = initialTemperature;
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double previousEnergy = solverSystem.energy();
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int exchange = 0;
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while (Ti > finalTemperature)
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{
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for (size_t i = 0; i < iterationsPerStep; i++)
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{
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solverSystem.changeState();
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double newEnergy = solverSystem.energy();
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if (newEnergy < previousEnergy)
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{
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previousEnergy = newEnergy;
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exchange++;
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}
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else
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{
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double r = rngEnergy.uniform(0.0, 1.0);
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if (r < std::exp(-(newEnergy - previousEnergy) / Ti))
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{
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previousEnergy = newEnergy;
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exchange++;
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}
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else
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{
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solverSystem.reverseState();
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}
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}
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}
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Ti *= coolingRatio;
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}
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if (lastTemperature)
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*lastTemperature = Ti;
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return exchange;
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}
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}} //namespace
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#endif // OPENCV_ML_INL_HPP
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