Table 7. Performance with training datasets of various sizes using gold standard medical concepts.

Data Size	Explicit recognizer			Implicit recognizer			Micro	INC
	P	R	F	P	R	F	F
50	0.9316	0.8245	0.8748	0.9527	0.6364	0.7631	0.8491	/
100	0.9384	0.8483	0.8911	0.9593	0.6966	0.8071	0.8717	0.0226
150	0.9423	0.8621	0.9004	0.9654	0.7147	0.8213	0.8821	0.0330
200	0.9479	0.8713	0.9080	0.9664	0.7418	0.8393	0.8922	0.0431
250	0.9488	0.8743	0.9102	0.9678	0.7595	0.8511	0.8964	0.0473
300	0.9481	0.8776	0.9114	0.9686	0.7631	0.8537	0.8978	0.0487

*Inc is increment compared with baseline.