نسخة أولية وصول مفتوح
CoEvoWhen: Policy-Tool Coevolution for Ultra-Long Video Temporal Grounding
Ultra-long video temporal grounding requires balancing long-range evidence search with fine-grained event understanding under a limited visual budget, yet existing agentic methods still rely largely on predefined policies and tool capabilities. Motivated by this, we propose a novel policy-tool coevolution framework tha …