Table 4 Results. The results for four methods are reported: traditional q-gram, Linkage (LK) kernel method, KCaM (KM) kernel method and Linkage KCaM (LKM) kernel method.

2-gram

0.9578

0.9555

0.9623

0.9606

2-gram

0.7872

0.7666

0.7581

0.7684

3-gram

0.9568

0.9608

0.9621

0.9647

3-gram

0.8220

0.8151

0.8034

0.7823

4-gram

0.9499

0.9516

0.9540

4-gram

0.7812

0.7648

0.7467

5-gram

0.9354

0.9365

0.9311

5-gram

0.7254

0.7530

0.7441

6-gram

0.9300

0.9272

0.9287

6-gram

0.6886

0.7224

0.7265

7-gram

0.9272

0.9245

0.9181

7-gram

0.5965

0.6088

0.6186

8-gram

0.9086

0.9039

0.8990

8-gram

0.5319

0.5354

0.5522

9-gram

0.8906

0.8889

0.8875

9-gram

0.4794

0.498

0.4922

Q-gram

0.9368

0.9441

0.9500

Q-gram

0.7698

0.7953

0.7645

Multiple

0.9472

0.9591

0.9621

Multiple

0.8091

0.8225

0.7892