reshapeVectorToMatrix function

Tensor<Matrix> reshapeVectorToMatrix(
  1. Tensor<Vector> v,
  2. int numRows,
  3. int numCols
)

Implementation

Tensor<Matrix> reshapeVectorToMatrix(Tensor<Vector> v, int numRows, int numCols) {
  Vector vVec = v.value;
  Matrix outValue = [];
  int index = 0;

  for (int i = 0; i < numRows; i = i + 1) {
    Vector row = [];
    for (int j = 0; j < numCols; j = j + 1) {
      row.add(vVec[index]);
      index = index + 1;
    }
    outValue.add(row);
  }

  Tensor<Matrix> out = Tensor<Matrix>(outValue);

  out.creator = Node(
    [v],
        () {
      int length = v.data.length;
      for (int i = 0; i < length; i = i + 1) {
        v.grad[i] = v.grad[i] + out.grad[i];
      }
    },
    opName: 'reshape',
    extraParams: {'numRows': numRows, 'numCols': numCols},
    cost: 0,
  );
  return out;
}