Work

xLSTMKT: xLSTM for Knowledge Tracing

Year: 2025

Type: article

Abstract: Knowledge Tracing focuses on modeling a student’s evolving knowledge state to accurately predict their responses to future questions across a set of knowledge concepts. In recent years, KT models based on Long Short-Term Memory (LSTM) and Transformer architectures have achieved significant performance improvements, surpassing traditional Bayesian approaches. However, existing methods fuse question-specific and knowledge concepts-specific information at an early stage, limiting the model’s ability to fully capture the fine-grained details of student learning dynamics. To address these limitations, we propose a novel framework called xLSTM Knowledge Tracing (xLSTMKT), that explicitly separates student interactions into question-level and skill-level streams, generating dynamic embeddings for each at every time step. These embeddings are then jointly utilized to enhance next-response prediction. Extensive experiments conducted on several datasets demonstrate that our model consistently outperforms state-of-the-art KT methods, achieving at least a 1.42% improvement in AUC. Furthermore, we introduce a new problem formulation for the KT task, which yields additional performance gains, notably improving AUC scores on the ALGEBRA2005 dataset.

Source: IEEE Access

DOI: 10.1109/access.2025.3595176

Authors: Yasser Aderghal, Hakim Hafidi, Abdellatif El Ghazi

Institution: International University of Rabat

Language: English

Topic: Intelligent Tutoring Systems and Adaptive Learning

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

SDG: Quality education

Open Access status: gold

Estimated APC paid: $2,075