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Table 1 Baseline and learned λ values for interpolating between Terrier and PageRank scores (expanding 20 related articles).

From: PageRank without hyperlinks: Reranking with PubMed related article networks for biomedical text retrieval

Tuning on MAP20

 

MAP20

Baseline

0.386

Learned (λ = 0.7)

0.416 (+7.8%)*

Tuning on MAP40

 

MAP40

Baseline

0.524

Learned (λ = 0.7)

0.544 (+3.8%)*

Tuning on P20

 

P20

Baseline

0.359

Learned (λ = 0.6)

0.381 (+6.1%)*

  1. Improvements are statistically significant based on the Wilcoxon signed-rank test (p < 0.05).