Unsupervised & Semi-Supervised From survey PDF — verify links
SFN-VAD
SFN-VAD — Prediction + Semantic Consistency
arXiv · 2025Human-reviewed summary status
Survey summary
Fuses appearance, motion, and language-derived semantic cues in a tri-modal encoder; a multimodal decoder predicts next frame and semantic representation, and a Sparse Feature Filtering Module limits over-generalization to abnormal events.
Taxonomy placement
Unsupervised & Semi-Supervised
Unsupervised & Semi-SupervisedPrediction + Semantic Consistency
Method characteristics
Unsupervised & Semi-SupervisedTri-modalSparse filteringPrediction error