Universal Dependencies is an open community effort to create cross-linguistically consistent treebank annotation for many languages within a dependency-based lexicalist framework. The annotation consists in a linguistically motivated word segmentation; a morphological layer comprising lemmas, universal part-of-speech tags, and standardized morphological features; and a syntactic layer focusing on syntactic relations between predicates, arguments and modifiers. In this paper, we describe version 2 of the universal guidelines (UD v2), discuss the major changes from UD v1 to UD v2, and give an overview of the currently available treebanks for 90 languages.
Joakim Nivre ; de Marneffe, Marie-Catherine ; Filip Ginter ; Jan Hajič ; Christopher D. Manning ; et. al. Universal Dependencies v2: An Evergrowing Multilingual Treebank Collection.Proceedings of 12th International Conference on Language Resources and Evaluation (LREC 2020).In: Universal Dependencies v2: An Evergrowing Multilingual Treebank Collection. European Language Resources Association.,