ACE 2005 Development Corpus

This corpus constitutes the training data for the 2005 Automatic Content Extraction exercise. Training data files were dually annotated by two annotators working independently. Discrepancies between the two versions of each file were then adjudicated by a senior annotator or team leader, resulting in a gold standard file. After adjudication, TIMEX2 values were normalized (for English only). The corpus is available at LDC under the catalogue number LDC2006T06.

The distribution of files across domains in the corpus is as follows:

ACE 2005 Development corpus

Domain	Domain Code	#Docs	#Words	#TIMEX2	Comments
Broadcast Conversation	BC	60	40415	626
Broadcast News	BN	226	55967	1455
Conversational Telephone Speech	CTS	39	39845	409
Newswire	NW	106	48399	1235
Usenet Newsgroups	UN	49	37366	741
Weblog	WL	119	37897	1003
Total		599	259889	5469