通过属性感知机制提升教育知识图谱中先修关系学习的准确性与一致性。
ProPRL: Property-Aware Prerequisite Relation Learning in Educational Knowledge Graphs

- 基于概念资源超图与学习行为图,融合多跳行为证据生成互补表征
- 采用成对门控机制自适应融合双视图特征,提升预测精度
- 引入不可逆约束防止反向预测冲突,适合个性化教学系统开发
先修关系学习对自适应教学至关重要,但现有方法多将其视为传统链接预测任务,难以自适应整合个体候选对的互补教育证据,并容易产生矛盾的反向预测。本文提出属性感知的先修关系学习框架 ProPRL。ProPRL 首先从概念-资源超图和有向学习行为图中学习互补的概念表征,利用保持方向性的个性化传播聚合多跳行为证据;随后采用成对门控机制,为每个候选有序概念对自适应加权并融合两视图信息;最后引入不可逆性约束,通过反对称正则化惩罚同一概念对双向预测均高置信的情况。在多个真实世界教育数据集上的实验表明,ProPRL 在先修关系学习任务上达到当前最优性能。
原文摘要 · Abstract (English)
Prerequisite relation learning is central to adaptive instruction, yet existing methods often formulate it as conventional link prediction, limiting their ability to adaptively integrate complementary educational evidence for individual candidate pairs and to discourage contradictory reverse predictions. We propose ProPRL, a Property-aware Prerequisite Relation Learning framework. ProPRL first learns complementary concept representations from a concept-resource hypergraph and a directed learning-behavior graph, where direction-preserving personalized propagation aggregates multi-hop behavioral evidence. It then employs a Pair-conditioned Gate to adaptively weight and fuse the two views for each candidate ordered concept pair. Finally, an \textit{Irreversibility Constraint} introduces an anti-symmetry regularizer that penalizes simultaneously high confidence in both directions of the same concept pair. Experiments on multiple real-world educational datasets show that ProPRL achieves state-of-the-art performance on prerequisite relation learning.
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