Self-Training PCFG Grammars with Latent Annotations Across Languages Zhongqiang Huang author Mary Harper author 2009-08 text Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing Philipp Koehn editor Rada Mihalcea editor Association for Computational Linguistics Singapore conference publication huang-harper-2009-self https://aclanthology.org/D09-1087/ 2009-08 832 841