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#ifndef OVXLIBXX_OPERATIONS_BATCHNORM_H_
#define OVXLIBXX_OPERATIONS_BATCHNORM_H_
#include "tim/vx/operation.h"

namespace tim {
namespace vx {
namespace ops {

/**
 * ## BatchNorm
 *
 * Carries out batch normalization as described in the paper
 * https://arxiv.org/abs/1502.03167.
 *
 * $$\hat x_i\leftarrow \frac{x_i-\mu_\mathcal{B}}{\sqrt{\sigma_\mathcal{B}^2+\epsilon}}$$
 *
 * $$y_i=\gamma\hat x_i+\beta\equiv BN_{\gamma,\beta}(x_i)$$
 */

class BatchNorm : public Operation {
  public:
    BatchNorm(Graph* graph, float eps);

    std::shared_ptr<Operation> Clone(std::shared_ptr<Graph>& graph) const override;

   protected:
    float eps_;
};

}  // namespace ops
}  // namespace vx
}  // namespace tim

#endif /* OVXLIBXX_OPERATIONS_BATCHNORM_H_ */