Table 3 Detailed results for five-fold cross-validation experiments, interpolating PageRank and Terrier scores (expansion of 20 related articles).

Fold

training (λ = 0.7)

testing (λ = 0.7)

baseline

1

0.390 ± 0.275

0.514 ± 0.298

0.461 ± 0.304

2

0.447 ± 0.281

0.294 ± 0.260

0.264 ± 0.233

3

0.403 ± 0.273

0.473 ± 0.328

0.465 ± 0.313

4

0.439 ± 0.292

0.325 ± 0.225

0.277 ± 0.203

5

0.400 ± 0.284

0.477 ± 0.276

0.472 ± 0.300

Fold

training (λ = 0.7)

testing (λ = 0.7)

baseline

1

0.513 ± 0.346

0.668 ± 0.344

0.636 ± 0.338

2

0.590 ± 0.343

0.365 ± 0.322

0.338 ± 0.290

3

0.539 ± 0.350

0.567 ± 0.356

0.560 ± 0.349

4

0.557 ± 0.343

0.495 ± 0.382

0.461 ± 0.382

5

0.400 ± 0.284

0.629 ± 0.317

0.627 ± 0.327

Fold

training (λ = 0.6)

testing (λ = 0.6)

baseline

1

0.355 ± 0.330

0.520 ± 0.375

0.475 ± 0.366

2

0.421 ± 0.353

0.265 ± 0.277

0.250 ± 0.247

3

0.411 ± 0.349

0.289 ± 0.310

0.272 ± 0.299

4

0.379 ± 0.330

0.425 ± 0.404

0.400 ± 0.406

5

0.377 ± 0.348

0.435 ± 0.329

0.425 ± 0.338