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OpenCV/include/opencv2/ml/ml.inl.hpp

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+// 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