An XGBoost ITS maps multimodal features from 10,360 videos to BARS scores and delivers layered feedback that produced significant skill gains (Cohen's d 0.39-0.90) in a 30-day study of 204 learners.
Enhancing English oral presentation skills through a rubric -based hybrid AI –peer feedback platform,
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An Interpretable Closed-Loop Intelligent Tutoring System for Multimodal Affective Feedback in Asynchronous Presentation Training
An XGBoost ITS maps multimodal features from 10,360 videos to BARS scores and delivers layered feedback that produced significant skill gains (Cohen's d 0.39-0.90) in a 30-day study of 204 learners.