cross_entropy_loss.hpp

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#pragma once
 
#include <cstdint>
 
#include "pulsatrix/device_backend.hpp"
#include "pulsatrix/tensor.hpp"
 
namespace pulsatrix {
 
class CrossEntropyLoss {
public:
    explicit CrossEntropyLoss(DeviceBackend* backend);
 
    [[nodiscard]] float forward(const Tensor& logits, int64_t target_class);
 
    [[nodiscard]] Tensor backward() const;
 
private:
    DeviceBackend* backend_;
    Tensor softmax_probs_;
    int64_t target_class_ = 0;
};
 
}  // namespace pulsatrix