Table 2.

Number of articles for each test dataset in each batch

Week	Batch 1	Batch 2	Batch 3
1	1,942 (1,553)	4,869 (3,414)	7,578 (2,616)
2	830 (726)	5,551 (3,802)	10,139 (3,918)
3	790 (761)	7,144 (3,983)	8,722 (2,969)
4	2,233 (586)	4,623 (2,360)	1,976 (1,318)
5	6,562 (5,165)	8,233 (3,310)	1,744 (1,209)
6	4,414 (3,530)	8,381 (3,156)	1,357 (696)
Total	16,763 (12,321)	38,801 (20,025)	31,570 (12,726)

In parentheses the articles that have been annotated by the curators by the time of the Task 1a evaluation (September 2013).