To compare our model to state-of-the-art character-based POS taggers, we evaluate its accuracy on the English part of the Universal Dependencies (UD) v1.2 dataset (Nivre et al., 2015  Zeljko Agic, 2017), using the splits, training and evaluation rules from the CoNNL 2017 shared task (Zeman et al., 2017).
we calculate joint tokenization and UPOS (universal POS) F 1 scores.