Dynamic Knowledge embedding and tracing
This addresses the problem of student knowledge tracking for intelligent tutoring systems, representing an incremental improvement by hybridizing existing methods.
The paper tackles knowledge tracing for tracking student knowledge evolution, proposing the DynEmb framework that combines matrix factorization and RNNs to achieve superior performance without requiring concept/skill tags, outperforming previous state-of-the-art on real-world datasets.
The goal of knowledge tracing is to track the state of a student's knowledge as it evolves over time. This plays a fundamental role in understanding the learning process and is a key task in the development of an intelligent tutoring system. In this paper we propose a novel approach to knowledge tracing that combines techniques from matrix factorization with recent progress in recurrent neural networks (RNNs) to effectively track the state of a student's knowledge. The proposed \emph{DynEmb} framework enables the tracking of student knowledge even without the concept/skill tag information that other knowledge tracing models require while simultaneously achieving superior performance. We provide experimental evaluations demonstrating that DynEmb achieves improved performance compared to baselines and illustrating the robustness and effectiveness of the proposed framework. We also evaluate our approach using several real-world datasets showing that the proposed model outperforms the previous state-of-the-art. These results suggest that combining embedding models with sequential models such as RNNs is a promising new direction for knowledge tracing.