Behavior Pack Optimization for Video MLLM Post-Training
Video multimodal large language models (MLLMs) keep climbing video question answering benchmarks, yet shuffling the frames, masking the segment that supports the answer, or occluding the target object barely changes their predictions. The accuracy rests on appearance and language priors, not on the temporal evidence th...
Zhaolu Kang, Shi-Yu Liu, Tai-Long Luo et al.
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