transpose function

Tensor<Matrix> transpose(Tensor<Matrix> a)

Implementation

Tensor<Matrix> transpose(Tensor<Matrix> a) {
  int M = a.value.length;
  int N = a.value[0].length;
  Matrix outValue = [];
  for (int i = 0; i < N; i++) {
    Vector row = [];
    for (int j = 0; j < M; j++) {
      row.add(a.value[j][i]);
    }
    outValue.add(row);
  }
  Tensor<Matrix> out = Tensor<Matrix>(outValue);
  out.creator = Node(
    [a],
    () {
      for (int i = 0; i < N; i++) {
        for (int j = 0; j < M; j++) {
          a.grad[j][i] += out.grad[i][j];
        }
      }
    },
    opName: 'transpose', // This name is already unique
    cost: 0,
  );
  return out;
}