Table 4 F-measures of grid search with parameters γ and C using RBF kernel

2 ^-1

2 ^-2

2 ^-3

2 ^-4

2 ^-5

2 ^-6

2 ¹

0.8740

0.8762

0.8729

0.8630

0.8583

0.8524

2 ²

0.8736

0.8757

0.8750

0.8686

0.8603

0.8560

2 ³

0.8843

0.8742

0.8759

0.8743

0.8656

0.8594

2 ⁴

0.8899

0.8849

0.8790

0.8784

0.8721

0.8663

2 ⁵

0.8951

0.8960

0.8859

0.8792

0.8798

0.8708

2 ⁶

0.8926

0.8966

0.8971

0.8854

0.8807

0.8784

2 ⁷

0.8853

0.9008

0.8956

0.8970

0.8806

0.8810

2 ⁸

0.8808

0.8965

0.8945

0.9009

0.8898

0.8826

2 ⁹

0.8790

0.8802

0.8977

0.8999

0.8972

0.8868

2 ¹⁰

0.8715

0.8741

0.8939

0.8945

0.9016

0.8935

2 ¹¹

0.8659

0.8669

0.8808

0.8940

0.9018

0.8970

2 ¹²

0.8641

0.8640

0.8713

0.8953

0.8945

0.9002