Concept Prerequisite Relation Prediction by Using Permutation-Equivariant Directed Graph Neural Networks
Year: 2023
Type: preprint
Abstract: This paper studies the problem of CPRP, concept prerequisite relation prediction, which is a fundamental task in using AI for education. CPRP is usually formulated into a link-prediction task on a relationship graph of concepts and solved by training the graph neural network (GNN) model. However, current directed GNNs fail to manage graph isomorphism which refers to the invariance of non-isomorphic graphs, reducing the expressivity of resulting representations. We present a permutation-equivariant directed GNN model by introducing the Weisfeiler-Lehman test into directed GNN learning. Our method is then used for CPRP and evaluated on three public datasets. The experimental results show that our model delivers better prediction performance than the state-of-the-art methods.
Source: arXiv (Cornell University)
Authors: Qu, Xiran, Shang, Xuequn, Zhang, Yupei
Institution: Northwestern Polytechnical University
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Awards: G1864240129, G4080921903
OpenAlex ID: W4389912075