Feature Optimization for Predicting Readability of Arabic L1 and L2 Hind Saddiki author Nizar Habash author Violetta Cavalli-Sforza author Muhamed Al Khalil author 2018-07 text Proceedings of the 5th Workshop on Natural Language Processing Techniques for Educational Applications Yuen-Hsien Tseng editor Hsin-Hsi Chen editor Vincent Ng editor Mamoru Komachi editor Association for Computational Linguistics Melbourne, Australia conference publication saddiki-etal-2018-feature 10.18653/v1/W18-3703 https://aclanthology.org/W18-3703/ 2018-07 20 29