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Table 12 Results of MLM, RBM and combined approach

From: Combination of conditional random field with a rule based method in the extraction of PICO elements

  Element P Element I
Precision
 MLM 85% 65%
 RBM 61% 40%
 Combined (MLM & RBM) 77% 51%
Recall
 MLM 74% 57%
 RBM 72% 86%
 Combined (MLM & RBM) 83% 86%
F-score
 MLM with CRF 79% 60%
 RBM 66% 55%
 Combined (MLM & RBM) 80% 64%
ALTA [12] best F-scores
 MLM with CRF 58% 35%
Paper [11] best F-scores
 MLM with CRF 81.3% 81.1%