@inproceedings{collapsedvariationalbayesianinferencefor,
  title = {Collapsed Variational Bayesian Inference for PCFGs},
  author = {Pengyu Wang and Phil Blunsom},
  year = {2013},
  booktitle = {WS 2013 8},
  url = {https://aclanthology.org/W13-3519},
}