In the description of data set IVc it was said that there are 280 test trials.
This information is wrong, the test set contains 420 trials.
Adobe provided a lot of infrastructure to do that with just a simple script.
Let’s take a look at how to do that with a text field that is only supposed to have a value of either ‘AAAA’ or ‘BBBB’ (yes, I know that this does not make much sense in a real PDF form).
For each data set, the competition winner gets a chance to publish the algorithm in an article devoted to the competition that will appear in IEEE Transactions on Neural Systems and Rehabilitation Engineering.