Simple-Random-Sampling-Based Multiclass Text Classification Algorithm

Table 2

Feature number and uselessness rate in TanCorp collection.

Feature number (num)			𝑅𝑢 (%)
𝑁(1)	𝑁(2)	𝑁(∗)	𝑅𝑢(≤1)	𝑅𝑢(≤2)
1,316,422	325,834	2,087,815	63	79