Extracting a HPSG grammar from a deep dependency treebank
Speaker: Bart Cramer
Abstract:
Grammar extraction in deep formalisms has received remarkable attention in recent years. We recognise its value, but try to create a more precision-oriented grammar, by hand-crafting a core grammar, and learning lexical types and lexical items from a treebank. The study we performed focused on German, and we used the Tiger treebank as our resource. A completely hand-written grammar in the framework of HPSG forms the inspiration for our core grammar, and is also our frame of reference for evaluation. We also report preliminary results on evaluation on a per-word basis.
Joint work with Zhang Yi.
