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yukun Song

4 accepted papers

2026

BLM-Guard: Explainable Multimodal Ad Moderation with Chain-of-Thought and Policy-Aligned Rewards

AAAI 2026technical

Short-video platforms now host vast multimodal ads whose deceptive visuals, speech and subtitles demand finer-grained, policy-driven moderation than community safety filters. We present BLM-Guard, a content-audit framework for commercial ads that fuses Chain-of-Thought reasoning with rule-based poli

Cited by 0SourcePDFScholar
2026

DialogueVPR: Towards Conversational Visual Place Recognition

CVPR 2026

Inspired by how humans communicate spatial information, language-guided geo-localization has gained significant traction for its intuitive and practical value. Despite this progress, most methods still rely on a static, one-shot retrieval paradigm, which fails to handle the ambiguity and incompleten

Cited by 0SourcecodeScholar
2026

SAGE: Spatial-visual Adaptive Graph Exploration for Efficient Visual Place Recognition

ICLR 2026poster

Visual Place Recognition (VPR) requires robust retrieval of geotagged images despite large appearance, viewpoint, and environmental variation. Prior methods focus on descriptor fine-tuning or fixed sampling strategies yet neglect the dynamic interplay between spatial context and visual similarity d…

Cited by 0SourcecodeScholar
2025

Focus on Local: Finding Reliable Discriminative Regions for Visual Place Recognition

AAAI 2025technical

Visual Place Recognition (VPR) is aimed at predicting the location of a query image by referencing a database of geotagged images. For VPR task, often fewer discriminative local regions in an image produce important effects while mundane background regions do not contribute or even cause perceptual…