Canonical Context-Free Grammars and Strong Learning: Two Approaches Alexander Clark author 2015-07 text Proceedings of the 14th Meeting on the Mathematics of Language (MoL 2015) Marco Kuhlmann editor Makoto Kanazawa editor Gregory M Kobele editor Association for Computational Linguistics Chicago, USA conference publication clark-2015-canonical 10.3115/v1/W15-2309 https://aclanthology.org/W15-2309/ 2015-07 99 111