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Table 5 Comparisons of SCSM and BM25, with MAP, RP and P@5, P@20, NDCG@5, and NDCG@20 On Blog06 collections

From: Salient context-based semantic matching for information retrieval

Corpus

Methods

MAP

RP

P@5

P@20

NDCG@5

NDCG@20

Blog06

BM25

0.318

0.371

0.634

0.605

0.625

0.611

 

CSSMC

0.346

0.403

0.670

0.642

0.659

0.648

  

+ 8.748%

+ 8.79%

+ 5.68%

+ 6.03%

+ 5.48%

+ 6.09%

 

SCSMlf

0.349

0.408

0.694

0.657

0.684

0.665

  

+ 9.75%

+ 10.17%

+ 9.46%

+ 8.51%

+ 9.58%

+ 8.88%

 

SCSMgf

0.347

0.405

0.682

0.646

0.672

0.654

  

+ 9.06%

+‘9.20%

+ 7.57%

+ 6.78%

+ 7.67%

+ 7.08%

  1. Boldface numbers indicate statistically significant improvements over BM25 by permutation test