Improved Feature-Selection Method Considering the Imbalance Problem in Text Categorization

Table 1

The term-to-category feature appearance matrix.

Features	C1; (2369)	C2; (237)	C3; (578)	C4; (3964)	C5; (582)	C6; (478)	C7; (717)	C8; (286)	C9; (486)	C10; (283)
Billion	345	60	251	1828	110	344	461	26	992	36
Company	2128	6	303	1515	22	6	14	42	24	9
April	622	113	121	1578	304	210	243	121	202	156
Bank	487	5	67	527	24	780	1138	19	141	2
Oil	271	17	2018	252	48	28	36	210	94	32
Total	3853	201	2760	5700	508	1368	1892	418	1453	235