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Pei Fu

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Preprint Sep 2026

Xiaomi-OCR-0 Technical Report

Compact OCR-specific vision-language models achieve strong document parsing performance, but often rely on costly supervision and focus primarily on visual-text reconstruction. We introduce Xiaomi-OCR-0, a unified 0.8B model for document parsing and OCR-centric understanding. We build an approximately 170M-sample OCR-c...

Xin Chen, An-An Du, Feng-Juan Feng et al. · 0 citations
#natural language process... Preprint Sep 2026

Informed Masking: Structure-Aware Perturbation for Reinforcement Learning in Diffusion Large Language Models

This work identifies a systematic upstream/downstream structure in dLLM rollouts and proposes Informed Masking (IM), which derives a per-token priority score from the denoising trajectory at zero extra inference cost and biases mask sampling toward downstream tokens.

Xiao-Yi Yu, E. Sangineto, Pei Fu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Towards Omni-dimensional GUI Agent Navigation with Masked Trajectory Prediction

The MaP is proposed, a unified framework that seamlessly harmonizes divergent GUI navigation tasks and effectively mitigates gradient conflicts and significantly outperforms the direct mixture training, establishing a robust paradigm for multi-task GUI navigation.

Yan Zhang, Pei Fu, Dai-Qing Wu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

DAREBench: Deployment-Aware and Reliable Evaluation of Models as Agents

DAREBench (Deployment-Aware and Reliable Evaluation of Models as Agents), a benchmark designed to capture workload variation and support reliable agent evaluation, is introduced, suggesting that agent deployment and model selection should consider workload profiles, deployment mode, and accuracy--cost trade-offs rather...

Yu Liu, Zhi-Lin Liu, Zhi-Wei Yang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Making Every Tool Call Count: Necessary Tool-Evidence Path Rewards for Agentic Vision-Language Models

This work proposes NTEP-R (NTEP Reward), a supervision mechanism ensuring that each tool invocation strictly advances the reasoning process toward the final solution, and introduces a non-repeated-goal regularizer to penalize redundant calls that revisit satisfied NTEP goals.

Xing-Ming Long, Yu Liu, Zhi-Wei Yang et al. · 0 citations
Jul 2026

Switch-Reasoner: Learn When to Think in Multitask Mixtures via Reinforcement Learning

Switch-Reasoner is proposed, a GRPO-based framework that learns to adaptively select reasoning modes for MLLMs and introduces a dual-level regulation mechanism that balances the overall use of Thinking Mode and Direct Mode while providing sample-level supervision based on the relative benefit of the two choices.

Yiyang Fang, Pei Fu, Jinjie Li et al. · 0 citations
Preprint Jul 2026

DeltaV: Thinking with Visual State Updates in Unified Large Multimodal Models

DeltaV is proposed, a ULMM that replaces full-image generation with visual updates and introduces a temporal similarity (TSIM) Router, which stops allocating tokens once the marginal reconstruction gain falls below a threshold.

Pengjie Wang, Linger Deng, Zujian Zhang et al. · 1 citation
Preprint Aug 2026

Reference-Free Post-Training of Open Large Language Models for Multilingual Machine Translation

This work studies reference-free post-training for multilingual machine translation with open large language models and finds that on-policy distillation reaches, but does not surpass, the quality frontier achieved by RL with checkpoint interpolation.

Chris Han, Pengzhi Gao, Pei Fu et al. · 0 citations

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