Improving Surface-syntactic Universal Dependencies (SUD): surface-syntactic relations and deep syntactic features
Abstract
SUD is an annotation scheme for syntactic dependency treebanks, near isomorphic to UD (Universal Dependencies). Contrary to UD, it is based on syntactic criteria (favoring functional heads) and the relations are defined on distributional and functional bases. In this paper, we will recall and specify the general principles underlying SUD, present the updated set of SUD relations, discuss the central question of MWEs, and introduce an orthogonal layer of deep-syntactic features converted from the deep-syntactic part of the UD scheme.
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