LEARNING
X-Tokenizer:面向视觉-语言-动作预训练的多模态动作分词器
Xirui Kang, Yanpei Shi, Lucy Liang, Roy Gan, Dongxiu Liu, Pushi Zhang, Danpeng Chen, Xiaoyi Qin, Yinan Zheng, Jinliang Zheng, Hao Wang, Xianyuan Zhan, Hang Su
- 发表年份
- 2026
- 访问权限
- 开放获取
摘要
本文提出X-Tokenizer,一种基于语义残差量化的轻量级动作分词器,旨在将动作离散化为兼具语义与几何信息的令牌,以桥接预训练的视觉-语言推理与连续机器人控制。通过掩码动作建模和对比对齐,该分词器在多种机械臂平台上实现了统一的动作接口,显著提升了多模态推理与执行的一致性。
关键词
action tokenizationvision-language-actionsemantic quantizationpretrainingrobot control
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