Mining clinical relationships from patient narratives

BMC Bioinformatics

Table 8 Performance over extracted entities.

Relation	Metric	gold standard entities	extracted entities
has_finding	P	63	62
	R	82	32
	F1	71	41
has_indication	P	44	44
	R	47	27
	F1	41	32
has_location	P	73	68
	R	83	49
	F1	76	55
has_target	P	59	47
	R	68	39
	F1	62	41
laterality_modifies	P	86	83
	R	89	76
	F1	85	74
negation_modifies	P	81	81
	R	93	53
	F1	85	60
sub_location_modifies	P	87	71
	R	95	24
	F1	90	31
Overall	P	64	63
	R	76	40
	F1	70	48

Performance of relation extraction over automatically extracted entities, compared to relation extraction using perfect gold standard entities. For relation extraction, the cumulative feature set +event of Table 4 was used.

ISSN: 1471-2105