Latent-Variable PCFGs: Background and Applications Shay Cohen author 2017-07 text Proceedings of the 15th Meeting on the Mathematics of Language Makoto Kanazawa editor Philippe de Groote editor Mehrnoosh Sadrzadeh editor Association for Computational Linguistics London, UK conference publication cohen-2017-latent 10.18653/v1/W17-3405 https://aclanthology.org/W17-3405/ 2017-07 47 58