def METHOD_NAME(parser):
    NATransformerModel.METHOD_NAME(parser)
    parser.add_argument(
        "--crf-lowrank-approx",
        type=int,
        help="the dimension of low-rank approximation of transition",
    )
    parser.add_argument(
        "--crf-beam-approx",
        type=int,
        help="the beam size for apporixmating the normalizing factor",
    )
    parser.add_argument(
        "--word-ins-loss-factor",
        type=float,
        help="weights on NAT loss used to co-training with CRF loss.",
    )