42 lines
1002 B
42 lines
1002 B
#pragma once
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#include "parameter_optimizer.h"
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namespace paddle {
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namespace optimizer {
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class AdamOptimizer : public ParameterOptimizer {
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public:
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AdamOptimizer(Tensor *parameter,
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LrPolicy *lr,
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double beta_1,
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double beta_2,
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double epsilon,
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double decay)
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: ParameterOptimizer(parameter, lr),
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momentums_(new Tensor(parameter->size())),
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velocitys_(new Tensor(parameter->size())),
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beta_1_(beta_1),
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beta_2_(beta_2),
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epsilon_(epsilon),
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decay_(decay) {}
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~AdamOptimizer() {
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if (momentums_) delete momentums_;
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if (velocitys_) delete velocitys_;
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}
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void Update(const Tensor *gradient);
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const char *SerializeState(int *state_len);
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void DeserializeState(const std::string &state);
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private:
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Tensor *momentums_;
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Tensor *velocitys_;
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double beta_1_;
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double beta_2_;
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double epsilon_;
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double decay_;
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};
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} // namespace optimizer
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} // namespace paddle
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