Active DOP: A constituency treebank annotation tool with online learning Andreas van Cranenburgh author 2018-08 text Proceedings of the 27th International Conference on Computational Linguistics: System Demonstrations Dongyan Zhao editor Association for Computational Linguistics Santa Fe, New Mexico conference publication van-cranenburgh-2018-active https://aclanthology.org/C18-2009/ 2018-08 38 42