Effective sampling for large-scale automated writing evaluation systems
Table 2: ASAP AES data summary
['Set', 'Train  [ITALIC] n', 'Test  [ITALIC] n', 'Avg. Words']
While relatively small, these test sets are nonetheless sufficient to ensure that the performance we report in the results section approaches the performance one might expect on a much larger sample. The same table shows the rounded average number of words in each essay set. A peculiarity of these sets is that in some cases the average length is quite low. This is true for all of the response-to-source sets, suggesting that students write less when performing a more focused task.