Author

H. Vo

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Preprint Aug 2026

FaLCon: Facet-Anchored Retrieval with Late Consensus for Sim2Real Text-Based Person Anomaly Search

Text-based person anomaly search requires retrieving real-world pedestrian images from detailed natural-language descriptions using models trained primarily on synthetic data. This Sim2Real setting is particularly challenging because visually similar candidates may differ only in subtle actions, object interactions, or...

H. Pham, P. Tran, Thuan Duc Mai et al. · 1 citation

Preprint Aug 2026

Heterogeneous Vision-Language Ensemble with Disagreement-Aware Reranking for Text-Based Person Anomaly Retrieval

The GENAI4E team's solution to AI City Challenge 2026 Track 4 builds upon a strong retrieval backbone and progressively integrates heterogeneous vision-language embedding models through score alignment and iterative ensemble fusion, followed by disagreement-aware VLM reranking for ambiguous queries.

Huu-An Vu, Cam Tu Nguyen Thi, Thanh Toan Le Ngo et al. · 1 citation