Table 2

Performance of the term association approach

k1

b

Indices

Geno 2007

Geno 2006

Geno 2005

Geno 2004

HARD 2004

document

passage

passage2

document

passage

document

document

document

passage


0.4

2.0

word

0.2060

0.1296

0.0526

0.2790

0.0765

-

-

-

-

(30.06%)

(92.00%)

(96.87%)

(4.80%)

(43.87%)

-

-

-

-

sentence

0.1710

0.0955

0.0330

0.2477

0.0698

-

-

-

-

(25.01%)

(135.26%)

(114.11%)

(4.14%)

(75.50%)

-

-

-

-

paragraph

0.1508

0.0726

0.0336

0.2161

0.0365

0.2156

0.3001

0.2458

0.2683

(38.90%)

(326.77%)

(256.97%)

(6.15%)

(90.16%)

(9.78%)

(1.66%)

(0.37%)

(1.82%)


0.5

1.3

word

0.2668

0.1611

0.0650

0.3445

0.1010

-

-

-

-

(31.31%)

(67.31%)

(78.66%)

(9.71%)

(40.64%)

-

-

-

-

sentence

0.2724

0.1392

0.0619

0.3376

0.0889

-

-

-

-

(45.38%)

(98.81%)

(76.99%)

(11.43%)

(61.59%)

-

-

-

-

paragraph

0.1953

0.1040

0.0638

0.3270

0.0579

0.2879

0.3459

0.2843

0.3031

(23.01%)

(130.18%)

(91.48%)

(5.17%)

(56.88%)

(10.65%)

(1.62%)

(1.46%)

(1.54%)


1.0

1.0

word

0.2385

0.1425

0.0526

0.3428

0.0975

-

-

-

-

(53.28%)

(228.44%)

(60.23%)

(10.67%)

(47.89%)

-

-

-

-

sentence

0.2251

0.1345

0.0551

0.3202

0.0842

-

-

-

-

(24.43%)

(77.44%)

(57.29%)

(9.73%)

(61.68%)

-

-

-

-

paragraph

0.1955

0.0969

0.0564

0.3069

0.0529

0.2777

0.3498

0.2594

0.2801

(2.80%)

(8.50%)

(72.57%)

(5.25%)

(57.04%)

(9.03%)

(2.13%)

(2.85%)

(3.05%)


1.2

0.75

word

0.2469

0.1381

0.0547

0.3221

0.0881

-

-

-

-

(36.49%)

(77.03%)

(84.33%)

(5.77%)

(35.28%)

-

-

-

-

sentence

0.2698

0.1483

0.0667

0.3457

0.0823

-

-

-

-

(35.77%)

(82.18%)

(69.35%)

(7.95%)

(57.74%)

-

-

-

-

paragraph

0.2348

0.1155

0.0778

0.3483

0.0444

0.3085

0.3606

0.2659

0.2812

(16.64%)

(78.31%)

(34.56%)

(3.01%)

(22.64%)

(7.34%)

(0.61%)

(1.60%)

(1.96%)


2.0

0.4

word

0.2450

0.1355

0.0568

0.3228

0.0763

-

-

-

-

(25.44%)

(60.53%)

(79.09%)

(2.42%)

(19.71%)

-

-

-

-

sentence

0.2605

0.1327

0.0622

0.3549

0.0697

-

-

-

-

(25.01%)

(75.08%)

(55.20%)

(0.58%)

(42.27%)

-

-

-

-

paragraph

0.2308

0.1084

0.0762

0.3533

0.0521

0.2889

0.3502

0.2845

0.2956

(13.95%)

(71.30%)

(18.86%)

(2.78%)

(44.01%)

(3.96%)

(0.55%)

(1.25%)

(2.11%)


The results of the term association approach are presented: (1) all the runs are under the same settings as the baselines in Table 1, including the parameter settings of (k1, b), the indices and the evaluation measures; (2) the factor analysis base algorithms and the recursive re-ranking algorithms are applied; (3) the values in the parentheses are the relative rates of improvement over the original results.

Hu et al. BMC Bioinformatics 2012 13(Suppl 9):S2   doi:10.1186/1471-2105-13-S9-S2

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