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知识追踪旨在评估学习者的学习状态,并根据先前的答题情况预测他们未来的答题表现.然而现有的知识追踪模型大多仅关注问题或技能间的关联,忽略了学生与问题间的结构关系.为此我们提出了基于学生-问题关联的异构图知识追踪模型(Student-Problem association based heterogeneous graph Knowledge Tracing model
SPKT).该模型在知识追踪中融合了学生的学习能力和问题的重要性,并使用图注意力网络学习学生问题间的关联,获得学生、问题的嵌入表示并进行知识状态的预测.通过在真实公开数据集上的性能对比和模型消融实验,并可视化SPKT模型的知识追踪效果,证明了SPKT在预测性能上优于现有的知识追踪模型.
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Xiao Wang,Houye Ji,Chuan Shi,Bai Wang,Peng Cui,P. Yu,Yanfang Ye.Heterogeneous Graph Attention Network.[J].CoRR,2019.
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Albert T. Corbett,John R. Anderson.Knowledge tracing: Modeling the acquisition of procedural knowledge[J].User Modeling and User-Adapted Interaction,1995(4).
王炼红,罗志辉,林飞鹏,李潇瑶.采用多头注意力机制的C&RM-MAKT预测算法[J].电子学报,2023(05).
张暖,江波.学习者知识追踪研究进展综述[J].计算机科学,2021(04).
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