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AVA: Towards Agentic Video Analytics with Vision Language Models

Talkat NSDI '26 · 2026-05-04..05-06· [machine-learning, computer-vision]
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name:Ting Cao
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name:Lili Qiu
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AVA builds an Event Knowledge Graphs index from long streams by windowed captioning with a 7B VLM (e.g., ChainOne VL), semantic merging via BLEU/BERT-like scores, and temporal/entity edges, then runs an agentic retrieval-generation loop where an LLM explores the EKG with forward/backward/requery/summarize actions. Results: 62.3% on LVBench, 64.1% on VideoMME-Long, 75.8% on AVA-100 (8 videos >10 hours, 120 QA). Indexing runs >2 FPS; agentic search dominates time (~80%). System improves reasoning by ~40 points and yields up to ~20% QA gains.

AI-written summary · about

  1. 0:00Introduction
  2. 2:25Video analytics intelligence levels
  3. 6:00AVA’s L4 reasoning approach
  4. 7:47Open-ended video analytics challenges
  5. 9:55Efficient ultra-long video handling
  6. 12:04Event Knowledge Graph
  7. 15:37Agentic retrieval and evidence gathering
  8. 18:52Consistency-based answer selection
  9. 19:12Long-video benchmark evaluation
  10. 22:23Summary and future directions
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