Proceedings of the 4th Workshop on Natural Language Processing Techniques for Educational Applications (NLPTEA 2017) Yuen-Hsien Tseng editor Hsin-Hsi Chen editor Lung-Hao Lee editor Liang-Chih Yu editor 2017-12 Asian Federation of Natural Language Processing Taipei, Taiwan text conference publication ws-2017-natural https://aclanthology.org/W17-5900/