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

Table 1

Information statistics of each category.

	Category 1	Category 2	Category 3	Category 4
Number of sentences	1055	780	1715	996
Proportion of sentences	0.24	0.17	0.38	0.2
Total words	29036	23126	47163	28395
Thesaurus size	4545	3965	6415	4675