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Table 1 Performance of EnvMine in the identification of physicochemical information.

From: EnvMine: A text-mining system for the automatic extraction of contextual information

 

Number of Instances

Retrieved

Correct

Recall

Precision

F-value

Total

559

542

526

96.8%

97.0%

96.9%

Linked to variables

559

519

503

92.3%

96.9%

94.5%

  1. The row "Linked to variables" refers to these instances that were linked unambiguously to a given variable. Recall is measured as the ratio between the number of correct instances and the total number of instances. Precision if the ratio between correct instances and retrieved instances. F-value combines precision and recall as their weighted harmonic mean, calculated as F = (2*P*R)/P + R.