A New Approach to Automated Text Readability Classification based on Concept Indexing with Integrated Part-of-Speech n-gram Features Abigail Razon author John Barnden author 2015-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing Ruslan Mitkov editor Galia Angelova editor Kalina Bontcheva editor INCOMA Ltd. Shoumen, BULGARIA Hissar, Bulgaria conference publication razon-barnden-2015-new https://aclanthology.org/R15-1068/ 2015-09 521 528