stump_func_op.h

#ifndef CAFFE2_FB_OPERATORS_UTILITY_OPS_H_
#define CAFFE2_FB_OPERATORS_UTILITY_OPS_H_

#include "caffe2/core/context.h"
#include "caffe2/core/operator.h"

namespace caffe2 {

// Converts each input element into either high_ or low_value
// based on the given threshold.
//
// out[i] = low_value if in[i] <= threshold else high_value
template <typename TIN, typename TOUT, class Context>
class StumpFuncOp final : public Operator<Context> {
 public:
  USE_OPERATOR_CONTEXT_FUNCTIONS;

  StumpFuncOp(const OperatorDef& operator_def, Workspace* ws)
      : Operator<Context>(operator_def, ws),
        threshold_(OperatorBase::GetSingleArgument<TIN>("threshold", 0)),
        low_value_(OperatorBase::GetSingleArgument<TOUT>("low_value", 0)),
        high_value_(OperatorBase::GetSingleArgument<TOUT>("high_value", 0)) {}

  bool RunOnDevice() override;

 protected:
  TIN threshold_;
  TOUT low_value_;
  TOUT high_value_;

  // Input: label, output: weight
};

} // caffe2

#endif // CAFFE2_FB_OPERATORS_UTILITY_OPS_H_