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Table 5 Comparison with baseline PRF retrieval models in certain metrics

From: An adaptive term proximity based rocchio’s model for clinical decision support retrieval

 BM25+RocchioRM3HRoc1HRoc2HRoc3
MAP0.04900.05400.0651 + (32.8%,20.5%)0.0647 + (32.0%,19.8%)0.0642 + (31.0%,18.9%)
P@50.27330.26000.2933 + (7.32%,12.8%)0.2733 + (0.00%,5.11%)0.2733 + (0.00%,5.11%)
P@100.25330.24670.2733 + (7.89%,10.8%)0.2667 + (5.29%,8.11%)0.2567 + (1.34%,4.25%)
P@200.21670.22330.2350 + (8.44%,5.24%)0.2317 + (6.92%, 3.76%)0.2317 + (6.92%, 3.76%)
F10.08530.09320.1112 + (30.3%,19.3%)0.1108 + (29.9%,18.9%)0.1096 + (28.5%, 17.6%)
  1. The values in parentheses represent the improvements over BM25+Rocchio and RM3 respectively. The best result obtained is shown in bold, and the superscripts “*” and “+” denote statistically significant improvements over BM25+Rocchio and RM3, respectively (Wilcoxon signed-rank test with p<0.05)