An important challenge is handling of the segmentation in a correct way or applying a more advanced normalisation process before tagging.
we proposed significant expansions to the state-of-the-art tagger for Polish, namely Toygger, that resulted in large gain in per-Form Tag W prep:loc:nwok kredytowaniu ger:sg:loc:n:imperf:aff zakupu subst:sg:gen:m3 auta subst:sg:gen:n poszło praet:sg:n:perf bardzo adv:pos sprawnie adv:pos i conj całkiem adv przyzwoite adj:pl:nom:f:pos spłaty subst:pl:nom:f .