Comparing Two Methods for Adding Enhanced Dependencies to UD Treebanks

When adding enhanced dependencies to an existing UD treebank, one can opt for heuristics that predict the enhanced dependencies on the basis of the UD annotation only. If the treebank is the result of conversion from an underlying treebank, an alternative is to produce the enhanced dependencies directly on the basis of this underlying annotation. Here we present a method for doing the latter for the Dutch UD treebanks. We compare our method with the UD -based approach of Schuster et al. (2018). While there are a number of systematic differences in the output of both methods, it appears these are the result of insufficient detail in the annotation guidelines and it is not the case that one approach is superior over the other in principle.