A little perturbation makes a difference: Treebank augmentation by perturbation improves transfer parsing Ayan Das author Sudeshna Sarkar author 2019-12 text Proceedings of the 16th International Conference on Natural Language Processing Dipti Misra Sharma editor Pushpak Bhattacharya editor NLP Association of India International Institute of Information Technology, Hyderabad, India conference publication das-sarkar-2019-little https://aclanthology.org/2019.icon-1.9/ 2019-12 75 84