Distance Variance Score: An Efficient Feature Selection Method in Text Classification

Table 3

The sparsity of sub-DTMs constructed by features selected by LS and DVS (unit: %).

DBWorld data set			CNAE data set
	DVS	LS		DVS	LS
3721	95.01		856	99.20
2721	93.76	97.28	656	99.00	99.01
1721	91.04	98.00	456	98.60	98.81
721	83.16	98.10	256	97.73	98.68
521	79.47	98.03	156	96.60	99.78
321	73.01	98.40	56	92.80	99.90
121	61.23	98.44
21	49.70	98.44