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Zhangqi Duan

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#machine learning Preprint Oct 2026

A Unified Response Framework for Questions and Tutoring Dialogues

A unified framework that models both student responses to questions and tutor-posed subtasks during dialogues on a shared item response theory (IRT) scale is proposed and results show that the framework outperforms strong baselines on both question difficulty prediction and response correctness prediction.

Zhang-Qi Duan, Simon Woodhead, Maya Miller-Vedam et al. · 0 citations

Who Am I? History-Aware Profiles for Student Simulation in Tutoring Dialogues

This work proposes a two-component framework in which a profile generator summarizes a student's history and a simulator predicts student turns conditioned on the resulting profile, which trains both components with reinforcement learning (RL), yielding profiles optimized for faithful student simulation.

Zhangqi Duan, Shuyan Huang, Alexander Scarlatos et al. · 0 citations

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