As for LMC, how to set a threshold probability for judging whether a given sentence is correct remain explored, and there exists great trade-off between the precision and the recall as reported in (Jia et al., 2013).
utility of M by comparing the experimental results of Ours − and Ours + , we can observe that the latter achieves better performance, which validates the effectiveness of utilizing Confusionsets that can help improve the probability of generating correct target characters.