Temporal information extraction from mental health records to identify duration of untreated psychosis

Table 2 Automated time expression normalization results on the two EHR corpora (First referral and Early intervention)

Corpus	Batch	Reference standard	TPs	System1 (value acc)	System2 (value acc)
First referral	dev	768	686	0.77	0.86
First referral	valid	1254	1115	0.76	0.80
First referral	test	927	828	0.66	0.71
Early intervention	batchA	300	272	0.76	0.86
Early intervention	batchB	600	556	0.82	0.86

Automated time expression extraction results (normalized values) on the two EHR corpora (First referral and Early intervention), divided into development (dev), validation (valid) and test sets, and batches (batchA and batchB), respectively. Accuracy values are reported on overlapping annotations (TPs) for both the first system (System1) and its refined version (System2)

ISSN: 2041-1480