Practical Skills of Business English Correspondence Writing Based on Data Mining Algorithm

Table 4

Comparison of accuracy under different dimensions and different feature selection methods.

	Threshold = 0.05 (%)	Threshold = 0.03 (%)	Threshold = 0.02 (%)	Threshold = 0.01 (%)
Word frequency	48	53	57	59
X^2 statistic	53	58	59	62