TreeGraSP has made considerable progress in formalizing approaches to grammar theory that originated from a typologically large selection of languages, thereby contributing to better understanding these theories and enabling their computational processing. The project has put some effort into bridging the gap between computational linguistics and typological research, which has resulted in fruitful collaborations. TreeGraSP has made available a multilingual RRG parser and the project has developed strategies of transfer from universal dependencies (UD) and of cross-lingual parsing that can be employed with new languages, in particular with data one typically finds in typological fieldwork contexts. Recently, the project has particularly addressed issues of low-resource treebanking, in collaboration with typological linguists. The goal to provide resources and tools for automatic grammar development and language processing to linguists working with Role and Reference Grammar (RRG) has been reached the resulting approaches and tools will be further used in the future.
Concerning semantic parsing, one of the aims of the project was to link grammar formalisms that assume an extended domain of locality to semantic parsing towards explicit semantic representations that capture event types, semantic roles, and also logical relations between meaning components. On the syntactic side, TreeGraSP has provided a constituency parser that a) identifies elementary building blocks that represent in some sense constructions and b) yields competitive results, compared to other standard parsers. The above-mentioned treebanks were then extended with semantic annotation, concretely semantic roles and event types. This resource was then used to develop frame-based semantic parsers. Concretely, the approaches to syntactic parsing have been extended to semantics, yielding a system that shows a state of the art performance while providing transparent interpretable representations of syntax and semantics.
