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Yuxuan Zhang

University of British Columbia

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#artificial intelligence Preprint Sep 2026

OPIS: An Input-Grounded Benchmark for Multi-Object Memory in Video World Models

OPIS is introduced, an input-grounded benchmark that strictly anchors the assessment to a fixed set of object instances from the initial observation for evaluating multi-object memory in video world models and demonstrates that preserving the particular object instances in the input is considerably harder than generati...

Hao Wang, Tao Yu, Liu-Zhou Zhang et al. · 0 citations
#artificial intelligence Preprint Aug 2026

Dr. Claw: An AI Scientist Workspace for Vibe Research

Dr. Claw is presented, an open-source workspace that wraps existing coding-agent executors in a controllable and auditable human-in-the-loop workflow rather than introducing another autonomous agent.

D. Song, Han-Rong Zhang, Dawei Liu et al. · 1 citation
Jul 2026

Distributional Matching for Vector Quantization: A Unified Theoretical and Empirical Framework

This work introduces principled criteria for desirable VQ behavior and demonstrates that aligning feature and code vector distributions provides a unifying mechanism for mitigating training instability and codebook collapse, and instantiate this framework using a Wasserstein-based objective with an efficient closed-for...

Xia Fang, Litao Guo, Hengchao Chen et al. · 1 citation
Preprint Aug 2026

MedClaw: Heuristic Agent Harness for Long-Horizon Surgical Video Reasoning

This work builds an agent harness that separates reasoning from perception and improves by evolving context rather than optimizing weights, and proposes a gradient-free, reward-gated Heuristic Skill Distillation loop that mines the agent's own low-scoring traces and keeps a candidate skill only when it raises a validat...

Yingying Fan, Penghui Du, Leyan Zhu et al. · 1 citation
#natural language process... Preprint Aug 2026

S3Gym: Can LLMs Turn Self-Testing and Self-Judging into Self-Improvement?

These findings show that recognizing successful actions is insufficient; agents must also transform feedback into executable and transferable policies, and provide a unified framework for diagnosing this process and identifying the bottlenecks that prevent agents from translating interaction experience into reliable se...

Jia-Jun Shi, Siyang Tao, Yu-Hao Wu et al. · 2 citations
#natural language process... Preprint Aug 2026

WebWorld: The Browser as a World Model for Self-Improving Web Code

WebWorld is presented, the interface that lets a VLM prior interact with this browser-as-world-model autonomously and decides which interactions become supervision and reaches the level of strong frontier systems such as Kimi-K2.6 and GPT-5.4 on interactive HTML generation.

Jia-Jun Wu, Jian Yang, Ya-Xin Du et al. · 0 citations
Jul 2026

Function-Aware Fill-in-the-Middle as Mid-Training for Coding Agent Foundation Models

Beyond in-domain gains, mid-training mitigates the capability erosion that agentic post-training otherwise inflicts on non-agent coding and non-coding tool-use benchmarks (tau-bench, BFCL): although the mid-training corpus contains Python code only, the function-call inductive bias survives post-training and yields con...

Yubo Wang, Jiarong Liang, Yuxuan Zhang et al. · 1 citation
Preprint Aug 2026

VGI-Bench: Probing Visual Intelligence in Video Generation Models

VGI-bench is introduced, containing 27 tasks and 810 instances, organized by a two-level taxonomy of task domains and skill tags for fine-grained evaluation of visual reasoning capabilities of video generation models, and it is hoped VGI-bench will help stimulate the development of next-generation video generation mode...

Xuan He, Cong Wei, Yuhao Cheng et al. · 3 citations

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