Essay Quality Signals as Weak Supervision for Source-based Essay Scoring Haoran Zhang author Diane Litman author 2021-04 text Proceedings of the 16th Workshop on Innovative Use of NLP for Building Educational Applications Jill Burstein editor Andrea Horbach editor Ekaterina Kochmar editor Ronja Laarmann-Quante editor Claudia Leacock editor Nitin Madnani editor Ildikó Pilán editor Helen Yannakoudakis editor Torsten Zesch editor Association for Computational Linguistics Online conference publication zhang-litman-2021-essay https://aclanthology.org/2021.bea-1.9/ 2021-04 85 96