Leveraging Student Profiles and the Mamba Framework to Enhance Knowledge Tracing

Abstract

Knowledge tracing (KT) predicts students’ knowledge mastery based on their interaction history to forecast future performance. Although current KT methods have achieved good results, because of the lacking of students’ information, these methods can only make sequence-level inference, assuming that students are independent and homogeneous. Additionally, due to the typically long student sequences in KT tasks, mainstream RNN-based student state modeling methods suffer from long-sequence forgetting, while attention-based models require manually set bias functions. To address these issues, this paper proposes a D ual- G raph M amba framework for K nowledge T racing (DGMKT), which models student profiles based on students’ interaction sequence through a D ual- G raph S tudent- P rofile Aware M odule (DGSPM). Meanwhile, we model student mastery states based on Mamba, avoiding the long-sequence forgetting problem in RNN-based models and the need for bias functions in attention-based models for KT tasks. To the best of our knowledge, this is the first application of the Mamba architecture in KT tasks. We evaluate DGMKT on four datasets and compare it with ten baselines to demonstrate its superiority. Furthermore, we showcase its broad adaptability by integrating DGSPM with various KT models.