The Dependency Treebanks for Ancient Greek and Latin

The article aims to be an introduction to the dependency treebanks currently available for Ancient Greek and Latin, i.e., the Ancient Greek and Latin Dependency Treebank (AGLDT), the Index Thomisticus Treebank (IT-TB), the PROIEL Treebank, and the SEMATIA Treebank. Their pipelines for creation of morphosyntactic annotations are presented so as to highlight major commonalities and differences. All treebanks share the same basic underlying formalism, whereby syntactic words are connected to each other to form labeled directed acyclic graphs, and their annotation schemes, although different, are comparable to a very large extent.