Morphology within the multi-layered annotation scenario of the prague dependency treebank

Abstract

Morphological annotation constitutes a separate layer in the multi-layered annotation scenario of the Prague Dependency Treebank. At this layer, morphological categories expressed by a word form are captured in a positional part-of-speech tag. According to the Praguian approach based on the relation between form and function, functions (meanings) of morphological categories are represented as well, namely as grammateme attributes at the deep-syntactic (tectogrammatical) layer of the treebank. In the present paper, we first describe the role of morphology inthe Prague Dependency Treebank, and then outline several recent topics based on Praguian morphology: named entity recognition in Czech, formemes attributes encoding morpho-syntactic information in the dependency-based machine translation system, and development of a lexical database of derivational relations based partially on information provided by the morphological analyser.