An XGBoost-based ITS with a three-layer interpretable feedback architecture uses multimodal features from 10,360 MOOC video segments to score seven BARS dimensions and produces measurable skill gains in a 204-learner 30-day study.
Towards a set of design principles for developing oral presentation competence: A synthesis of research in higher education,
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An Interpretable Closed-Loop Intelligent Tutoring System for Multimodal Affective Feedback in Asynchronous Presentation Training
An XGBoost-based ITS with a three-layer interpretable feedback architecture uses multimodal features from 10,360 MOOC video segments to score seven BARS dimensions and produces measurable skill gains in a 204-learner 30-day study.