Table 14 Results for all seven classifiers and XSS web attacks across eight sampling ratios; Sampling column reports negative to positive class ratio after applying random undersampling, or “None” for case when no undersampling is applied; abbreviations are the same as in Table 8

LGB

None

0.51823

0.03288

—

DT

None

0.73696

0.03051

LGB

999:1

0.67307

0.11519

—

DT

999:1

0.81954

0.0312

LGB

99:1

0.87713

0.02719

—

DT

99:1

0.82293

0.03471

LGB

95:5

0.90041

0.02433

—

DT

95:5

0.85849

0.04602

LGB

9:1

0.92192

0.02306

—

DT

9:1

0.90477

0.04835

LGB

3:1

0.94149

0.01856

—

DT

3:1

0.93976

0.03266

LGB

65:35

0.9473

0.01831

—

DT

65:35

0.94484

0.0168

LGB

1:1

0.94449

0.01905

—

DT

1:1

0.93476

0.01734

RF

None

0.73478

0.03907

—

NB

None

0.74257

0.04591

RF

999:1

0.74152

0.03453

—

NB

999:1

0.74326

0.04973

RF

99:1

0.82985

0.0411

—

NB

99:1

0.74306

0.04848

RF

95:5

0.88201

0.0343

—

NB

95:5

0.74327

0.04545

RF

9:1

0.91671

0.02994

—

NB

9:1

0.74286

0.04941

RF

3:1

0.94445

0.02233

—

NB

3:1

0.74451

0.04826

RF

65:35

0.9524

0.01519

—

NB

65:35

0.74629

0.0448

RF

1:1

0.94678

0.01268

—

NB

1:1

0.75074

0.04973

XGB

None

0.71674

0.03711

—

LR

None

0.5

0.0

XGB

999:1

0.73696

0.03592

—

LR

999:1

0.5

0.0

XGB

99:1

0.82035

0.02958

—

LR

99:1

0.5

0.0

XGB

95:5

0.86605

0.03605

—

LR

95:5

0.49865

0.00056

XGB

9:1

0.90751

0.03115

—

LR

9:1

0.62693

0.09265

XGB

3:1

0.94018

0.02408

—

LR

3:1

0.73673

0.06536

XGB

65:35

0.94541

0.01506

—

LR

65:35

0.90051

0.01441

XGB

1:1

0.93096

0.02018

—

LR

1:1

0.87242

0.02487

CB

None

0.73087

0.02937

—

CB

999:1

0.73739

0.03659

—

CB

99:1

0.75932

0.05014

—

CB

95:5

0.84788

0.04208

—

CB

9:1

0.88504

0.03583

—

CB

3:1

0.9375

0.02523

—

CB

65:35

0.94357

0.02074

—

CB

1:1

0.93429

0.0142

—