Table 4.

Results of CRF model training and evaluation.

Evaluation data	Training Data	P	R	F
PhenoCHF Articles	Discharge summaries	0.79	0.47	0.58
PhenoCHF Discharge summaries	Articles	0.56	0.29	0.38
PhenoCHF (full) 5-fold cross validation		0.89	0.83	0.86

Experiments were performed using different document types (P=precision, R=recall, F=F-score)