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Ping Nie

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#artificial intelligence Preprint Oct 2026

World Editing: Intervening on Executable Worlds at Increasing Depth

Interactive world models are increasingly capable of generating environments and acting within them, yet deliberately editing an existing executable world remains underexplored. We formulate world editing as intervening on an existing world while preserving properties that should remain unchanged, and introduce interve...

Max W.F. Ku, Nok-Kan Law, Yu-Chien Tang et al. · 0 citations
Preprint Oct 2026

VIEScore2: Unified Image Evaluation with Spatially Grounded Explanations

Existing synthetic image evaluators typically provide only a scalar quality score and do not identify the image regions that support it. We introduce VIEScore2, a unified evaluator for image generation and editing tasks with optional conditioning images. VIEScore2 represents an image as an N x N grid and jointly predic...

Xian-Da Du, Max W.F. Ku, Weiming Ren et al. · 0 citations
#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

OpenResearcher: A Fully Open Pipeline for Long-Horizon Deep Research Trajectory Synthesis

OpenResearcher is presented, a reproducible pipeline that decouples one-time corpus bootstrapping from multi-turn trajectory synthesis and executes the search-and-browse loop entirely offline using three explicit browser primitives: search, open, and find, over a 15M-document corpus.

Zhuofeng Li, Dongfu Jiang, Xueguang Ma et al. · 29 citations · ⚡2
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
Preprint Jul 2026

SETA: Scaling Environments for Terminal Agents

This work constructs and releases SETA-Env, the largest open-source verifiable terminal RL dataset to date, containing over 4,500 environments, and demonstrates that SETA- Env provides high-quality training environments for terminal agents and serves as a valuable resource for advancing research on terminal-based agent...

Q. Shen, Zhiqi Huang, V. Kamanuru et al. · 8 citations · ⚡2

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