As it was shown in Table 5, with both χ 2 and f req based feature ranking, F SGM M algorithm performed better than CGD term and CGD SV D if we used average accuracy to evaluate their performance.
with χ 2 based feature ranking, F SGM M attained 55.4% average accuracy, while the best average accuracy of CGD term and CGD SV D were 40.9% and 51.3% respectively.