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Chenghao Liu

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#artificial intelligence Preprint Oct 2026

CASE: Cost-Aware Stopping for Efficient Long-Video Agents

Long-video agents can actively gather question-relevant evidence, but they typically leave a central decision implicit: when has the agent seen enough to answer? We propose CASE, a plug-in termination framework that frames this decision as policy-conditioned sequential stopping. At each causal checkpoint, CASE combines...

Yi-Ming Du, Cheng-Hao Liu, Zhiyuan Liu et al. · 0 citations
Preprint Aug 2026

MOSS-VL Technical Report

We present MOSS-VL, an open vision-language model family that treats real-time interaction -- perceiving while it speaks -- as a first-class capability. It is co-designed across the stack: the language decoder attends to vision only through gated cross-attention, so the model can naturally see incoming frames while gen...

Pengyu Wang, Chenkun Tan, Shaojun Zhou et al. · 0 citations
Preprint Aug 2026

MemOPD: On-Policy Distillation through Memory State Alignment for Long-Horizon Agents

MemOPD records the inputs and sampled outputs of each model invocation, restores its original token positions and causal visibility, and packs the reconstructed invocations for efficient teacher scoring, which improves F1 over PPO by up to 4162%, while packing yields up to a 1.63x speedup in actor computation during tr...

Zhiyuan Liu, Tinghong Ye, Chenghao Liu et al. · 0 citations

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