def METHOD_NAME():
    parser = argparse.ArgumentParser(sys.argv[0])
    parser.add_argument(
        "--sys", nargs="*", default="", metavar="FILE", help="path to system output"
    )
    parser.add_argument("--ref", default="", metavar="FILE", help="path to references")
    parser.add_argument(
        "--output",
        default="",
        metavar="FILE",
        help="print outputs into a pretty format",
    )
    args = parser.parse_args()
    if args.sys:
        src, tgt, hypos, log_probs = load_sys(args.sys)
        print("pairwise BLEU: %.2f" % pairwise(hypos))
        if args.output:
            merge(src, tgt, hypos, log_probs, args.output)
    if args.ref:
        _, _, refs = load_ref(args.ref)
        if args.sys:
            multi_ref(refs, hypos)
        else:
            intra_ref(refs)