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Table 4 Comparisons of SCSM and BM25, with MAP, RP and P@5, P@20, NDCG@5, and NDCG@20 on WT2G collection

From: Salient context-based semantic matching for information retrieval

Corpus Methods MAP RP P@5 P@20 NDCG@5 NDCG@20
WT2G BM25 0.313 0.340 0.532 0.391 0.542 0.470
  CSSMC 0.368 0.378 0.600 0.428 0.616 0.521
   + 17.82% + 11.09% + 12.78% + 9.46% + 13.63% + 10.88%
  SCSMlf 0.370 0.383 0.592 0.435 0.611 0.526
   + 18.27% + 12.77% + 11.28% + 11.25% + 12.63% + 11.97%
  SCSMgf 0.370 0.381 0.616 0.426 0.628 0.521
   + 18.01% + 12.03% + 15.79% + 8.95% + 15.88% + 11.05%
  1. Boldface numbers indicate statistically significant improvements over BM25 by permutation test