Table 1 Comparison of eight-letter vs. four-letter predictions of acceptor and donor sites for different datasets. Where application of eight-letter alphabet enhances the prediction compared to the conventional four-letter alphabet, the data pair is shown in bold.

AraClean:

4-

3'

0.8540*

0.8923

0.9039

0.8821

0.8906

0.9504

0.9011

0.9138

0.9511

8-

3'

0.8536*

0.8911

0.9048

0.9002

0.9043

0.9611

0.9414

0.9456

0.9744

4-

5'

0.8832

0.8871

0.9565*

0.8917

0.8989

0.9550

0.9066

0.9019

0.9737

8-

5'

0.8817

0.8853

0.9565*

0.9088

0.9010

0.9781

0.9422

0.9351

0.9874

AtGS:

4-

3'

0.7025

0.8338

0.8763

0.7450

0.8539

0.8976

0.7787

0.8769

0.9053

8-

3'

0.7002

0.8359

0.8705

0.7455

0.8495

0.9041

0.7943

0.8776

0.9219

4-

5'

0.8029

0.8846

0.9224

0.8224

0.8948

0.9311

0.8455

0.9048

0.9440

8-

5'

0.7986

0.8787

0.9252

0.8222

0.8997

0.9250

0.8576

0.9138

0.9464

HsGS:

4-

3'

0.7848

0.8649

0.9287

0.8167

0.8831

0.9403

0.8450

0.8979

0.9524

8-

3'

0.7843

0.8635

0.9299

0.8207

0.8888

0.9375

0.8574

0.9085

0.9530

4-

5'

0.8117

0.8779

0.9409

0.8449

0.8988

0.9510

0.8740

0.9139

0.9639

8-

5'

0.8070

0.8788

0.9348

0.8446

0.8935

0.9570

0.8842

0.9249

0.9619

BG570:

4-

3'

0.9002

0.9046

0.9597

0.9163

0.9276

0.9570

0.9346

0.9347

0.9761

8-

3'

0.8981

0.8996

0.9626

0.9174

0.9137

0.9748

0.9427

0.9512

0.9696

4-

5'

0.8845

0.9056

0.9369

0.9105

0.9153

0.9644

0.9353

0.9351

0.9780

8-

5'

0.8841

0.9070

0.9346

0.9136

0.9218

0.9615

0.9437

0.9406

0.9838

HMR195:

4-

3'

0.8812

0.8850

0.9596

0.9054

0.9169

0.9567

0.9406

0.9432

0.9774

8-

3'

0.8832

0.8868

0.9603

0.9120

0.9172

0.9661

0.9556

0.9525

0.9885

4-

5'

0.8775

0.8980

0.9378

0.9204

0.9290

0.9645

0.9532

0.9526

0.9850

8-

5'

0.8783

0.9224

0.9095

0.9275

0.9458

0.9558

0.9633

0.9618

0.9892