Guidelines for Universal Dependencies v2

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Guidelines for Universal Dependencies v2
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We are proud to announce that version 2 of the guidelines for Universal Dependencies is now available at http://universaldependencies.org

Universal Dependencies (UD) is a framework for cross-linguistically consistent treebank annotation that has so far been applied to over 50 languages. It was developed primarily to support multilingual natural language processing, but the resources have proven useful for a wide range of studies that were not foreseen originally, including research on language typology. Version 1 of the annotation guidelines was released in October 2014 and has been used for 5 successive releases of treebanks (v1.0–1.4). After a period of intense collaborative discussions, we have now released a new version that tries to fix the problems encountered with v1 while maximizing backward compatibility in order to ease the transition to the new version for all existing treebanks. We are grateful to all the feedback we have received from the UD community in this process. The first release of treebanks under v2 of the guidelines is planned to coincide with the release of the training data for the CoNLL 2017 shared task on UD parsing in March 2017. More information to follow soon.

Joakim Nivre
Marie-Catherine de Marneffe
Filip Ginter
Yoav Goldberg
Jan Hajič
Christopher Manning
Ryan McDonald
Slav Petrov
Sampo Pyysalo
Sebastian Schuster
Natalia Silveira
Reut Tsarfaty
Francis Tyers
Daniel Zeman