BMC Bioinformatics

Table 7 Performance by corpus size.

From: Mining clinical relationships from patient narratives

		Corpus size
Relation	Metric	C25	C50	C77
has_finding	Count	91	216	311
	P	66	63	65
	R	74	74	81
	F1	67	67	72
has_indication	Count	91	117	224
	P	22	25	42
	R	30	31	47
	F1	23	25	42
has_location	Count	127	199	364
	P	72	71	72
	R	76	80	81
	F1	73	74	75
has_target	Count	51	90	136
	P	65	49	62
	R	60	65	66
	F1	59	54	63
laterality_modifies	Count	57	73	128
	P	77	78	84
	R	69	68	88
	F1	72	69	84
negation_modifies	Count	34	67	101
	P	78	79	79
	R	80	93	93
	F1	78	84	85
sub_location_modifies	Count	30	43	76
	P	64	91	88
	R	64	85	95
	F1	64	86	91
Overall	Count	481	805	1340
	P	62	63	65
	R	65	71	75
	F1	63	66	69

Variation in performance by training corpus size. The "Count" row gives the number of training instances of a relation type, for the given corpus. The cumulative feature set +event of Table 4 was used.

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