Towards a Semantic Annotation of English Television News - Building and Evaluating a Constraint Grammar FrameNet
Eckhard Bick · Institutional Repositories DataBase (IRDB) · 2012
This paper presents work on the semantic annotation of a multimodal corpus of English television news. The annotation is performed on the second-by-secondaligned transcript layer, adding verb frame categories and semantic roles on top of a morphosyntactic analysis with full dependency information. We use a rulebased method, where Constraint Grammar mapping rules are automatically generated from a syntactically anchored Framenet with about 500 frame types and 50 semantic role types. We discuss design decisions concerning the Framenet, and evaluate the coverage and performance of the pilot system on authentic news data.