wehub-resource-sync
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
//
|
|
// ParameterOptimizer.hpp
|
|
// MNN
|
|
//
|
|
// Created by MNN on 2019/11/22.
|
|
// Copyright © 2018, Alibaba Group Holding Limited
|
|
//
|
|
|
|
#ifndef ParameterOptimizer_hpp
|
|
#define ParameterOptimizer_hpp
|
|
#include <MNN/expr/Expr.hpp>
|
|
#include <MNN/expr/Module.hpp>
|
|
#include <set>
|
|
namespace MNN {
|
|
namespace Train {
|
|
class MNN_PUBLIC ParameterOptimizer {
|
|
public:
|
|
enum RegularizationMethod {
|
|
L1,
|
|
L2,
|
|
L1L2,
|
|
};
|
|
|
|
ParameterOptimizer(std::shared_ptr<Express::Module> module);
|
|
virtual ~ParameterOptimizer() = default;
|
|
bool step(Express::VARP loss);
|
|
int currentStep();
|
|
void setCurrentStep(int step);
|
|
static void makeLoopModel(const char* mnnFileName, std::vector<Express::VARP> outputs, const std::pair<std::vector<Express::VARP>, std::vector<Express::VARP>>& parameters);
|
|
|
|
struct ParameterOptGrad {
|
|
Express::VARP parameter;
|
|
Express::VARP parameterGrad;
|
|
Express::VARP learningRate;
|
|
};
|
|
|
|
virtual std::map<Express::VARP, Express::VARP> onGetNextParameter(Express::VARP loss) = 0;
|
|
virtual std::pair<std::vector<Express::VARP>, std::vector<Express::VARP>> onMakeParameterUpdateGraphByGrad(const std::vector<ParameterOptGrad>& parameterGrads);
|
|
std::pair<std::vector<Express::VARP>, std::vector<Express::VARP>> makeParameterUpdateGraphByGrad(const std::vector<Express::VARP>& p, const std::vector<Express::VARP>& pd, const std::vector<Express::VARP>& lr);
|
|
|
|
static ParameterOptimizer* createSGD(std::shared_ptr<Express::Module> module, float lr, float momentum, float weightDecay, RegularizationMethod method);
|
|
static ParameterOptimizer* createADAM(std::shared_ptr<Express::Module> module, float lr, float momentum, float momentum2, float weightDecay, float eps, RegularizationMethod method);
|
|
protected:
|
|
const std::set<Express::VARP>& trainable() const {
|
|
return mTrainable;
|
|
}
|
|
std::shared_ptr<Express::Module> module() const {
|
|
return mModule;
|
|
}
|
|
private:
|
|
int mStep = 0;
|
|
std::shared_ptr<Express::Module> mModule;
|
|
std::set<Express::VARP> mTrainable;
|
|
};
|
|
|
|
} // namespace Train
|
|
} // namespace MNN
|
|
|
|
#endif
|