Compared with the loss of Wenxin, the performance is improved a lot

https://aistudio.baidu.com/aistudio/projectdetail/3955163

import paddle
import numpy as np
# from belu import Bleu
from jieba import cut
from collections import Counter

import pandas as pd
data=pd.read_csv("train.tsv",sep="\t")
data_1=data<