find_optimal_value 1651 apps/traincascade/old_ml.hpp     virtual float find_optimal_value( const CvMat* _Idx );
find_optimal_value  306 modules/ml/src/gbt.cpp     if (is_regression) base_value = find_optimal_value(sample_idx);
find_optimal_value  587 modules/ml/src/gbt.cpp         float value = find_optimal_value(leaf_idx);