Daily AI Papers Briefing (2026-07-27)

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【本日の論文】
1. AREX: Towards a Recursively Self-Improving Agent for Deep Research
https://huggingface.co/papers/2607.21461
2. K12-KGraph: A Curriculum-Aligned Knowledge Graph for Benchmarking and Training Educational LLMs
https://huggingface.co/papers/2605.09635
3. ReferTrack: Referring Then Tracking for Embodied Visual Tracking
https://huggingface.co/papers/2607.20061
4. Visual Contrastive Self-Distillation
https://huggingface.co/papers/2607.21556
5. Show, Don't Tell: Evaluating Spatial Cognition in Generative Pixels Rather Than LLM Text
https://huggingface.co/papers/2607.21072