Heterogeneous Graph Neural Networks for Concept Prerequisite Relation Learning in Educational Data

NAACL 2021 · Chenghao Jia, Yongliang Shen, Yechun Tang, Lu Sun, Weiming Lu ·

Prerequisite relations among concepts are crucial for educational applications, such as curriculum planning and intelligent tutoring. In this paper, we propose a novel concept prerequisite relation learning approach, named CPRL, which combines both concept representation learned from a heterogeneous graph and concept pairwise features. Furthermore, we extend CPRL under weakly supervised settings to make our method more practical, including learning prerequisite relations from learning object dependencies and generating training data with data programming. Our experiments on four datasets show that the proposed approach achieves the state-of-the-art results comparing with existing methods.

PDF Abstract