concatenate function

Tensor<Vector> concatenate(Tensor<Vector> a, Tensor<Vector> b)

Implementation

Tensor<Vector> concatenate(Tensor<Vector> a, Tensor<Vector> b) {
  int aLength = a.data.length;
  int bLength = b.data.length;
  Vector outValue = [];

  for (int i = 0; i < aLength; i = i + 1) {
    outValue.add(a.data[i]);
  }
  for (int i = 0; i < bLength; i = i + 1) {
    outValue.add(b.data[i]);
  }

  Tensor<Vector> out = Tensor<Vector>(outValue);
  out.creator = Node(
    [a, b],
        () {
      for (int i = 0; i < aLength; i = i + 1) {
        a.grad[i] = a.grad[i] + out.grad[i];
      }
      for (int i = 0; i < bLength; i = i + 1) {
        b.grad[i] = b.grad[i] + out.grad[aLength + i];
      }
    },
    opName: 'concat_vector',
    cost: 0,
  );
  return out;
}