Beneath the Scores: Rethinking Hallucination Evaluation for Video Understanding Models

arXiv:2609.28991 · cs.CV, cs.AI · Submitted 2026-09-24 · Read on arXiv

cs.CV, cs.AI

Submitted: 2026-09-24

Updated: 2026-09-24

Terminology

• Benchmark — 85× in this paper · explained in 2 episodes
• Hallucination — 78× in this paper · explained in 3 episodes
• Grounding — 72× in this paper · explained in 3 episodes
• Accuracy — 40× in this paper · explained in 1 episode
• Core — 6× in this paper · explained in 2 episodes
• Robustness — 6× in this paper · explained in 5 episodes
• Abstention — 4× in this paper · explained in 1 episode
• Aggregation — 4× in this paper · explained in 1 episode
• Agent Architectures — 2× in this paper · explained in 1 episode
• Agentic Architecture — 2× in this paper · explained in 1 episode
• Agentic System — 2× in this paper · explained in 2 episodes
• Benchmarking — 2× in this paper · explained in 3 episodes
• Distribution Shift — 2× in this paper · explained in 5 episodes
• Institutional Review Board — 2× in this paper
• Ablation — 1× in this paper · explained in 1 episode
• Ablation study — 1× in this paper · explained in 1 episode
• Agentic Reasoning — 1× in this paper · explained in 1 episode
• Agentic Search — 1× in this paper · explained in 1 episode
• Alignment — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Domain Shift — 1× in this paper · explained in 4 episodes
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Generative Model — 1× in this paper · explained in 2 episodes
• Generative Models — 1× in this paper · explained in 2 episodes
• Interpretability — 1× in this paper · explained in 15 episodes
• Latent Representation — 1× in this paper · explained in 2 episodes
• Latent Representations — 1× in this paper · explained in 3 episodes
• Multi-Agent Framework — 1× in this paper · explained in 3 episodes
• Multimodal Reasoning — 1× in this paper · explained in 5 episodes
• Reinforcement Learning — 1× in this paper · explained in 4 episodes
• Structured Prompting — 1× in this paper · explained in 2 episodes

Sources

• When AI Benchmarks Plateau: A Systematic Study of Benchmark Saturation
• Breaking Down Video LLM Benchmarks: Knowledge, Spatial Perception, or True Temporal Understanding?
• Video-MME-v2: Towards the Next Stage in Benchmarks for Comprehensive Video Understanding
• Distorted or Fabricated? A Survey on Hallucination in Video LLMs
• LongVideoAgent: Multi-Agent Reasoning with Long Videos
• ELV-Halluc: Benchmarking Semantic Aggregation Hallucinations in Long Video Understanding
• VideoHallucer: Evaluating Intrinsic and Extrinsic Hallucinations in Large Video-Language Models
• EventHallusion: Diagnosing Event Hallucinations in Video LLMs

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