The effect of non-tightness on Bayesian estimation of PCFGs Shay B Cohen author Mark Johnson author 2013-08 text Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Hinrich Schuetze editor Pascale Fung editor Massimo Poesio editor Association for Computational Linguistics Sofia, Bulgaria conference publication cohen-johnson-2013-effect https://aclanthology.org/P13-1102/ 2013-08 1033 1041