Training-Free From survey PDF — verify links
Flashback
Flashback — Memory-Driven
arXiv · 2025Human-reviewed summary status
Survey summary
Builds an offline pseudo-scene memory of LLM-generated normal and anomalous captions embedded with a frozen encoder; online segments are matched by similarity search, removing expensive online LLM calls for real-time zero-shot VAD.
Taxonomy placement
Training-Free
Training-FreeMemory-Driven
Method characteristics
Training-FreeOffline pseudo-scene memoryReal-timeSimilarity search