Improving the Annotations in the Turkish Universal Dependency Treebank

This study focuses on a comprehensive analysis and manual re-annotation of the Turkish IMST-UD Treebank, which was automatically converted from the IMST Treebank (Sulubacak et al., 2016b). In accordance with the Universal Dependencies’ guidelines and the necessities of Turkish grammar, the existing treebank was revised. The current study presents the revisions that were made alongside the motivations behind the major changes. Moreover, it reports the parsing results of a transition-based dependency parser and a graph-based dependency parser obtained over the previous and updated versions of the treebank. In light of these results, we have observed that the re-annotation of the Turkish IMST-UD treebank improves performance with regards to dependency parsing.