Epi2Diff extracts cognitive episode sequences from LRM reasoning traces and combines them with semantic features to predict human item difficulty, outperforming baselines on four educational datasets.
Shadi Noroozi and Hossein Karami
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Cognitive Episodes in LLM Reasoning Traces Enable Interpretable Human Item Difficulty Prediction
Epi2Diff extracts cognitive episode sequences from LRM reasoning traces and combines them with semantic features to predict human item difficulty, outperforming baselines on four educational datasets.