def get_target_label_short(y_mulitihot):
    """
    get target label.
    :param y_mulitihot: [0,0,1,0,1,0,...]
    :return: taget_list.e.g. [3,5,100]
    """
    taget_list = [];
    for i, element in enumerate(y_mulitihot):
        if element == 1:
            taget_list.append(i)
    return taget_list