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Reinforcement Learning with Verifiable Rewards (RLVR) has proven effective for Large Language Model (LLM) reasoning, yet current methods face key challenges in resource allocation and policy optimization dynamics: (i) uniform rollout…

Machine Learning · Computer Science 2026-04-24 Yangyi Fang , Jiaye Lin , Xiaoliang Fu , Cong Qin , Haolin Shi , Chaowen Hu , Lu Pan , Ke Zeng , Xunliang Cai

Long-horizon robotic manipulation remains challenging for Vision-Language-Action (VLA) models despite recent progress in zero-shot generalization and simulation-to-real-world transfer. Current VLA models suffer from stage hallucination,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-21 Zeting Liu , Zida Yang , Zeyu Zhang , Hao Tang

Diffusion large language models (dLLMs) generate text via iterative denoising but consistently underperform on multi-step reasoning. We hypothesize this gap stems from a coordination problem: AR models build coherence token-by-token, while…

Artificial Intelligence · Computer Science 2026-03-17 Earl J St Sauver

Current Vision-Language-Action (VLA) models rely on fixed computational depth, expending the same amount of compute on simple adjustments and complex multi-step manipulation. While Chain-of-Thought (CoT) prompting enables variable…

Robotics · Computer Science 2026-02-10 Yalcin Tur , Jalal Naghiyev , Haoquan Fang , Wei-Chuan Tsai , Jiafei Duan , Dieter Fox , Ranjay Krishna

Diffusion Large Language Models (dLLMs) are rapidly emerging alongside autoregressive models as a powerful paradigm for complex reasoning, with reinforcement learning increasingly used for downstream alignment. Existing trajectory-based RL…

Machine Learning · Computer Science 2025-11-20 Ranfei Chen , Ming Chen , Kaifei Wang

In dynamic environments such as warehouses, hospitals, and homes, robots must seamlessly transition between gross motion and precise manipulations to complete complex tasks. However, current Vision-Language-Action (VLA) frameworks, largely…

Vision-Language-Action (VLA) models are a powerful paradigm for generalist robotic control. However, their high computational cost and limited control frequency hinder real-time robotic manipulation, especially when large vision-language…

Robotics · Computer Science 2026-05-29 Ye Li , Huanan Liu , Kangye Ji , Yuan Meng , Jiajun Fan , Yuansong Wang , Shiyu Qin , Chenglei Wu , Shu-Tao Xia , Zhi Wang

To build a generalizable Vision-Language-Action (VLA) model with strong reasoning ability, a common strategy is to first train a specialist VLA on robot demonstrations to acquire reliable manipulation skills, and then incorporate mixed…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Zhen Fang , Zhuoyang Liu , Jiaming Liu , Hao Chen , Yu Zeng , Shiting Huang , Zehui Chen , Lin Chen , Shanghang Zhang , Feng Zhao

Recent Vision-Language-Action (VLA) models reformulate vision-language models by tuning them with millions of robotic demonstrations. While they perform well when fine-tuned for a single embodiment or task family, extending them to…

Robotics · Computer Science 2026-03-12 Yuxia Fu , Zhizhen Zhang , Yuqi Zhang , Zijian Wang , Zi Huang , Yadan Luo

Recent high-capacity vision-language-action (VLA) models have demonstrated impressive performance on a range of robotic manipulation tasks by imitating human demonstrations. However, exploiting offline data with limited visited states will…

Robotics · Computer Science 2025-05-27 Guanxing Lu , Wenkai Guo , Chubin Zhang , Yuheng Zhou , Haonan Jiang , Zifeng Gao , Yansong Tang , Ziwei Wang

While Diffusion Large Language Models (dLLMs) have emerged as a promising non-autoregressive paradigm comparable to autoregressive (AR) models, their faithfulness, specifically regarding hallucination, remains largely underexplored. To…

Computation and Language · Computer Science 2026-04-14 Zhengnan Guo , Fei Tan

Diffusion models have emerged as a powerful paradigm for modern generative modeling, demonstrating strong potential for large language models (LLMs). Unlike conventional autoregressive (AR) models that generate tokens sequentially,…

Machine Learning · Computer Science 2026-01-09 Gen Li , Changxiao Cai

Recent byte-level language models (LMs) match the performance of token-level models without relying on subword vocabularies, yet their utility is limited by slow, byte-by-byte autoregressive generation. We address this bottleneck in the…

Long-rollout causal video diffusion has converged on a fixed-size sliding-window KV cache, with recent progress innovating within this layout by changing which tokens occupy the window or how their positions are encoded. The per-head KV…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Hidir Yesiltepe , Jiazhen Hu , Tuna Han Salih Meral , Adil Kaan Akan , Kaan Oktay , Hoda Eldardiry , Pinar Yanardag

Recent advances in vision-language-action (VLA) models have shown promise in integrating image generation with action prediction to improve generalization and reasoning in robot manipulation. However, existing methods are limited to…

Computer Vision and Pattern Recognition · Computer Science 2025-08-27 Wenyao Zhang , Hongsi Liu , Zekun Qi , Yunnan Wang , Xinqiang Yu , Jiazhao Zhang , Runpei Dong , Jiawei He , Fan Lu , He Wang , Zhizheng Zhang , Li Yi , Wenjun Zeng , Xin Jin

End-to-end autonomous driving systems built on Vision Language Models (VLMs) have shown significant promise, yet their reliance on autoregressive architectures introduces some limitations for real-world applications. The sequential,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Can Cui , Yupeng Zhou , Juntong Peng , Sung-Yeon Park , Zichong Yang , Prashanth Sankaranarayanan , Jiaru Zhang , Ruqi Zhang , Ziran Wang

Discrete diffusion language models (dLLMs) enable parallel token updates with bidirectional attention, yet practical generation typically adopts blockwise semi-autoregressive decoding. This switch creates a training-inference mismatch:…

Machine Learning · Computer Science 2026-04-28 Danny Wang , Ruihong Qiu , Zi Huang

Recent advances in large language models (LLMs) have inspired new paradigms for document reranking. While this paradigm better exploits the reasoning and contextual understanding capabilities of LLMs, most existing LLM-based rerankers rely…

Information Retrieval · Computer Science 2026-02-16 Qi Liu , Kun Ai , Jiaxin Mao , Yanzhao Zhang , Mingxin Li , Dingkun Long , Pengjun Xie , Fengbin Zhu , Ji-Rong Wen

This paper proposes Block-Filtered Long-Context Attention (BFLA), a training-free sparse prefill attention mechanism for long-context inference. BFLA adopts a two-stage design. In Stage 1, query and key sequences are compressed into coarse…

Signal Processing · Electrical Eng. & Systems 2026-05-13 Chong Wu , Zhenan Feng , Renjie Xu , Houwang Zhang , Jiawang Cao , Maolin Che , Wenbo Zhu , Hong Yan

Manipulating dynamic objects remains an open challenge for Vision-Language-Action (VLA) models, which, despite strong generalization in static manipulation, struggle in dynamic scenarios requiring rapid perception, temporal anticipation,…

Robotics · Computer Science 2026-01-30 Haozhe Xie , Beichen Wen , Jiarui Zheng , Zhaoxi Chen , Fangzhou Hong , Haiwen Diao , Ziwei Liu