A Machine Learning Approach to Convert CCGbank to Penn Treebank Xiaotian Zhang author Hai Zhao author Cong Hui author 2012-12 text Proceedings of COLING 2012: Demonstration Papers Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication zhang-etal-2012-machine https://aclanthology.org/C12-3067/ 2012-12 535 542