CogGen: A Learner-Centered Generative AI Architecture for Intelligent Tutoring with Programming Video

Wengxi Li, Roy Pea, Nick Haber, Hari Subramonyam
6/25/2025
cs.AI

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Abstract

We introduce CogGen, a learner-centered AI architecture that transforms programming videos into interactive, adaptive learning experiences by integrating student modeling with generative AI tutoring based on the Cognitive Apprenticeship framework. The architecture consists of three components: (1) video segmentation by learning goals, (2) a conversational tutoring engine applying Cognitive Apprenticeship strategies, and (3) a student model using Bayesian Knowledge Tracing to adapt instruction. Our technical evaluation demonstrates effective video segmentation accuracy and strong pedagogical alignment across knowledge, method, action, and interaction layers. Ablation studies confirm the necessity of each component in generating effective guidance. This work advances AI-powered tutoring by bridging structured student modeling with interactive AI conversations, offering a scalable approach to enhancing video-based programming education.

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Cite this paper

@article{li2025coggen,
  title  = {CogGen: A Learner-Centered Generative AI Architecture for Intelligent Tutoring with Programming Video},
  author = {Wengxi Li and Roy Pea and Nick Haber and Hari Subramonyam},
  year   = {2025},
  eprint = {2506.20600},
  archivePrefix = {arXiv},
  url    = {http://arxiv.org/abs/2506.20600v1}
}

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