KnowVis: Knowledge-Centric Visual Summarization for Video Lectures
- URL: http://arxiv.org/abs/2609.03742v2
- Date: Mon, 07 Sep 2026 04:26:07 GMT
- Title: KnowVis: Knowledge-Centric Visual Summarization for Video Lectures
- Abstract summary: We propose KnowVis, a framework that transforms linear video lectures into pedagogically grounded visual narratives.<n>KnowVis first extracts a detailed concept map from multimodal video content to identify important and challenging threshold concepts.<n>It then constructs structured knowledge units, and finally synthesizes engaging visual summaries.
- Score: 14.336793734778574
- License: http://creativecommons.org/licenses/by-nc-sa/4.0/
- Abstract: Video lectures are valuable educational resources, but their dense and lengthy formats often overwhelm novice learners. This difficulty stems from a fundamental pedagogical mismatch: while videos deliver transient information linearly, human learning requires constructing interconnected cognitive networks, a task that induces severe cognitive overload for novice learners lacking prior domain knowledge. Existing video summarization methods fail to resolve this mismatch, as they primarily produce text-heavy, linear condensations that still demand high cognitive effort. To bridge this gap, we propose KnowVis, a framework that transforms linear video lectures into pedagogically grounded visual narratives. KnowVis first extracts a detailed concept map from multimodal video content to identify important and challenging threshold concepts, then constructs structured knowledge units, and finally synthesizes engaging visual summaries. Alongside the framework, we introduce a curated dataset of 125 educational videos across 10 academic disciplines, paired with 1,079 generated visual summaries. Extensive automated evaluations and a human study demonstrate that, compared to state-of-the-art baselines, KnowVis generates more accurate and clear visuals that successfully reduce cognitive load and significantly improve student learning effectiveness and knowledge retention.
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