Text Classification Using Novel Term Weighting Scheme-Based Improved TF-IDF for Internet Media Reports

Table 7

F1 score (sport).

Balance ratio (%)	TF-IDF	TF-IADF	TF-IADFnorm	TF-IADF^+	TF-IADF^+norm
8	0.9732	0.9786	0.9776	0.9645	0.9562
7	0.9678	0.9722	0.9732	0.9467	0.9410
6	0.9574	0.9689	0.9700	0.9375	0.9300
5	0.9484	0.9662	0.9694	0.9276	0.9193
4	0.9341	0.9607	0.9645	0.9048	0.8968
3	0.9054	0.9438	0.9551	0.8548	0.8440
2	0.8521	0.9042	0.9193	0.7510	0.7429
1	0.5989	0.7971	0.8350	0.4085	0.3888