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Table 4 Evaluation of System Components.

From: Extraction of semantic biomedical relations from text using conditional random fields

Baseline CRF
Dictionaries  
Dictionary Window   
Start Window    
Key Entity Neighborhood     
Negation Window      
Recall 35.89 38.13 64.30 70.01 71.81 72.16
Precision 41.47 41.30 70.78 74.00 75.87 78.56
F-score 38.48 39.65 67.38 71.94 73.98 75.22
  1. Contribution of different features to the overall performance of the one-step CRF for the 9th cross-validation run. The baseline model includes orthographic, word shape, n-gram and the basic context feature.