Spring Cleaning and Grammar Compression: Two Techniques for Detection of Redundancy in HPSG Grammars Antske Fokkens author Yi Zhang author Emily M Bender author 2011-12 text Proceedings of the 25th Pacific Asia Conference on Language, Information and Computation Helena Hong Gao editor Minghui Dong editor Institute of Digital Enhancement of Cognitive Processing, Waseda University Singapore conference publication fokkens-etal-2011-spring https://aclanthology.org/Y11-1025/ 2011-12 236 244