Masaki Uto. Rater-Effect IRT Model Integrating Supervised LDA for Accurate Measurement of Essay Writing Ability. In Seiji Isotani, Eva Millán, Amy Ogan, Peter M. Hastings, Bruce M. McLaren, Rose Luckin, editors, Artificial Intelligence in Education - 20th International Conference, AIED 2019, Chicago, IL, USA, June 25-29, 2019, Proceedings, Part I. Volume 11625 of Lecture Notes in Computer Science, pages 494-506, Springer, 2019. [doi]