The Infinite PCFG Using Hierarchical Dirichlet Processes Percy Liang author Slav Petrov author Michael Jordan author Dan Klein author 2007-06 text Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL) Jason Eisner editor Association for Computational Linguistics Prague, Czech Republic conference publication liang-etal-2007-infinite https://aclanthology.org/D07-1072/ 2007-06 688 697