nodes-affinetransform.h

#ifndef DYNET_NODES_AFFINETRANSFORM_H_
#define DYNET_NODES_AFFINETRANSFORM_H_

#include "dynet/dynet.h"
#include "dynet/nodes-macros.h"

namespace dynet {

// y = x_1 \sum_{i=2, 4 ...} A_i * x_{i+1}
struct AffineTransform : public Node {
  template <typename T> explicit AffineTransform(const T& a) : Node(a) {}
  virtual bool supports_multibatch() const override { return true; }
  virtual int autobatch_sig(const ComputationGraph &cg, SigMap &sm) const override;
  virtual std::vector<int> autobatch_concat(const ComputationGraph & cg) const override;
  virtual void autobatch_reshape(const ComputationGraph & cg,
                                 const std::vector<VariableIndex> & batch_ids,
                                 const std::vector<int> & concat,
                                 std::vector<const Tensor*>& xs,
                                 Tensor& fx) const override {
    autobatch_reshape_concatonly(cg, batch_ids, concat, xs, fx);
  }
  DYNET_NODE_DEFINE_DEV_IMPL()
  mutable float* dEdf_mem;
};

} // namespace dynet

#endif