Task 1
POS Tagging
There is an ongoing discussion whether the problem of part of speech tagging is already solved, at least for English (see Manning 2011), by reaching the tagging error rates similar or lower than the human inter-annotator agreement, which is ca. 97%. In the case of languages with rich morphology, such as Polish, there is however no doubt that the accuracies of around 91% delivered by taggers leave much to be desired and more work is needed to proclaim this task as solved.