def khatri_rao(*args, **kwargs):
    """Computes the Khatri-Rao product of the input matrices.

    Given a collection of :math:`n` input matrices,

    .. math::
       A_1 \\in \\mathbb{R}^{M_1 \\times M}, \\ldots, A_n \\in \\mathbb{R}^{M_n \\times N},

    the (column-wise) Khatri-Rao product is defined as the matrix,

    .. math::
       X = A_1 \\otimes \\cdots \\otimes A_n \\in \\mathbb{R}^{(M_1 \\cdots M_n) \\times N},

    where the :math:`k` th column is equal to the column-wise outer product
    :math:`{A_1}_k \\otimes \\cdots \\otimes {A_n}_k` where :math:`{A_i}_k` is the kth
    column of the ith matrix.

    Example::

      >>> A = mx.nd.array([[1, -1],
      >>>                  [2, -3]])
      >>> B = mx.nd.array([[1, 4],
      >>>                  [2, 5],
      >>>                  [3, 6]])
      >>> C = mx.nd.khatri_rao(A, B)
      >>> print(C.asnumpy())
      [[  1.  -4.]
       [  2.  -5.]
       [  3.  -6.]
       [  2. -12.]
       [  4. -15.]
       [  6. -18.]]



    Defined in src/operator/contrib/krprod.cc:L108
    This function support variable length of positional input.

    Parameters
    ----------
    args : Symbol[]
        Positional input matrices

    name : string, optional.
        Name of the resulting symbol.

    Returns
    -------
    Symbol
        The result symbol.
    """
    return 0,
