def box_encode(samples=None, matches=None, anchors=None, refs=None, means=
    None, stds=None, name=None, attr=None, out=None, **kwargs):
    """Encode bounding boxes training target with normalized center offsets.
        Input bounding boxes are using corner type: `x_{min}, y_{min}, x_{max}, y_{max}`.) array


    Defined in src/operator/contrib/bounding_box.cc:L210

    Parameters
    ----------
    samples : Symbol
        (B, N) value +1 (positive), -1 (negative), 0 (ignore)
    matches : Symbol
        (B, N) value range [0, M)
    anchors : Symbol
        (B, N, 4) encoded in corner
    refs : Symbol
        (B, M, 4) encoded in corner
    means : Symbol
        (4,) Mean value to be subtracted from encoded values
    stds : Symbol
        (4,) Std value to be divided from encoded values

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

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