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cs.CV2026
Reasoning Text-to-Video Retrieval for Operating Room Clips via Action-Driven Digital Twins
Yiqing Shen, Hao Ding, Mathias Unberath
Text-to-video retrieval in operating rooms (OR) is an enabling technology for OR safety, as it allows stakeholders to retrieve and inspect recordings of specific events. However, b…
cs.CV2026
Training LLMs with Reinforcement Learning over Digital Twin Representations for Reasoning-Intensive Surgical VideoQA
Yiqing Shen, Han Zhang, Mathias Unberath
Surgical video question answering requires multi-step reasoning across semantic, spatial, and temporal dimensions. Existing methods architecturally compress videos into discrete to…