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Yogesh Kumar

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#artificial intelligence Preprint Oct 2026

Where, How, and When: Query-Guided Grounding for Video Understanding

Understanding video content requires reasoning at multiple levels of granularity, from identifying objects to interpreting their interactions and localizing when specific actions occur. This thesis studies three query-guided grounding tasks that answer where key objects are (object-level grounding), how they interact (...

Yogesh Kumar · 0 citations
Preprint Aug 2026

Strictly Causal Streaming Video Anomaly Detection with a Theoretically-Grounded State-Space Core

Recent work has applied Mamba style state space models (SSMs) to video anomaly detection, yet existing approaches still rely on buffering clips or windows internally, lack a theoretical account of how temporal memory relates to detection latency, and benchmark efficiency only through GPU throughput rather than the edge...

Yogesh Kumar · 0 citations
Preprint Aug 2026

Catching Hallucinated Citations in Video-LLM Question Answering: A Self-Verification Pipeline and Verifier Ablation Study

Video question answering systems built on vision-language models often produce timestamped claims with high confidence even when unsupported by the cited frame. This deceptive hallucination arises because timestamps imply grounding without ensuring correctness, increasing user trust but not accuracy. We introduce a pip...

Yogesh Kumar · 1 citation

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