A Feature Selection Approach Based on Interclass and Intraclass Relative Contributions of Terms

Table 1

20 NewsGroup corpus.

Category number	Category name
1	alt.atheism
2	comp.graphics
3	comp.os.ms-windows.misc
4	comp.sys.ibm.pc.hardware
5	comp.sys.mac.hardware
6	comp.windows.x
7	misc.forsale
8	rec.autos
9	rec.motorcycles
10	rec.sport.baseball
11	rec.sport.hockey
12	sci.crypt
13	sci.electronics
14	sci.med
15	sci.space
16	soc.religion.christian
17	talk.politics.guns
18	talk.politics.mideast
19	talk.politics.misc
20	talk.religion.misc