arXiv Computation and Language By Shengran Guo, Min Chi, Feifei Qiao, Varad Patwardhan

Beyond Response Scoring: An AI-aware Cognitive Supervision Framework for Automated Mathematical Short Answer Grading

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The paper introduces AICG, a two‑branch framework that enhances automated short answer grading by combining RoBERTa‑based answer scoring with a cognitive supervision branch that predicts skill mastery using a Q‑matrix and G‑DINA model. It also incorporates a generative‑AI detector to weight responses based on the likelihood of AI assistance, thereby reducing bias. Experiments on over 49,000 instructor‑graded responses show that AICG cuts mean absolute error by 50.3% and raises quadratic weighted kappa from 0.798 to 0.927 compared to baseline RoBERTa regression.

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