According to previous analyses on the experimental results shown in Figure 4, we choose the 4:6 proportion of P-style and V-style spelling errors to construct the training data in the following experiments.
we build five different sizes of datasets: D-10k 19 , D-20k, D-30k, D-40k and D-50k, which are extracted from  D-ocr and D-asr following the proportion of 4:6.