Efficient Optimization of -Measure with Cost-Sensitive SVM

Table 2

Characteristics of the experimental datasets.

Dataset	#Examples	#Features	Min (%)
a3a	32561	123	0.2396
acoustic	98528	50	0.2324
jcnn1	141691	22	0.0971
letter	20000	16	0.0396
news20	19928	62061	0.0500
satimage	6435	36	0.2417