Jia Tracy ShenMichiharu YamashitaEthan PriharNeil T. HeffernanXintao WuSean McGrewDongwon Lee 0001Classifying Math KCs via Task-Adaptive Pre-Trained BERT.2021abs/2105.11343CoRRhttps://arxiv.org/abs/2105.11343db/journals/corr/corr2105.html#abs-2105-11343