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Xi Chen

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#computer vision Preprint Sep 2026

Studying Image Tokenizers as Visual Languages in Unified Multimodal Models

A controlled pure-autoregressive testbed is built and track task-specific validation losses during multimodal continual pretraining across text, image, text-to-image (T2I), and image-to-text (I2T) prediction, showing that better reconstruction does not necessarily yield lower task-specific losses or stronger downstream...

Siting Li, Zheng-Yang Wang, S. Du et al. · 0 citations
Review Aug 2026

Agentic Artifact Creation: Systems, Evaluation, Principles, and Opportunities

This survey examines agentic artifact creation, which is defined as stateful construction in which an AI system materially constructs or revises a deliverable and intermediate observations redirect later work, and formulate principles for keeping commitments and responsibility explicit, turning feedback into targeted r...

Tianfu Wang, Zhe-Zheng Hao, Xinchi Xia et al. · 0 citations
Jul 2026

Understanding and Mitigating the Video-Action Generalization Gap via Temporal Ratio

An inference-time adaptive guidance method is proposed, which exploits this intrinsic feature attention pattern to dynamically amplify compositional video conditioning signals precisely when the policy relies on future rollouts, and mitigates the OOD-ID compositional generalization gap.

U. A. Mishra, Yongxin Chen, Danfei Xu et al. · 1 citation
#artificial intelligence Preprint Aug 2026

PAWBench: How Far Are We from Probabilistically Aligned World Modeling?

This work formalizes probabilistic alignment as a distributional criterion for world models and introduces PAWBench, a benchmark for evaluating video generators as stochastic samplers of world dynamics, and introduces PAWEval, an outcome-level protocol that converts repeated video rollouts into empirical distributions...

Yuandong Pu, Le Zhuo, Sayak Paul et al. · 0 citations

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