TriVLA: エピソード的世界モデリングを備えた三システム統合型視覚-言語-行動モデルによる汎用ロボット制御
TriVLA: A Triple-System-Based Unified Vision-Language-Action Model with Episodic World Modeling for General Robot Control
エピソード記憶の概念を取り入れ、VLMによるマルチモーダル理解と動画拡散モデルによる時系列予測、フローマッチングによる行動生成を統合した三システム構成のVLAモデルを提案し、実世界のマニピュレーションタスクで高い性能を示した。
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著者: Zhenyang Liu, Yongchong Gu, Sixiao Zheng, Yanwei Fu, Xiangyang Xue, Yu-Gang Jiang
分類: cs.RO
原文アブストラクト
Recent advances in vision-language models (VLMs) have enabled robots to follow open-ended instructions and demonstrate impressive commonsense reasoning. However, current vision-language-action (VLA) frameworks primarily rely on static representations and limited temporal context, restricting agents to short-horizon, reactive behaviors and hindering robust generalization in dynamic embodied environments. Inspired by cognitive neuroscience theories of episodic memory, we propose, to our knowledge, one of the first formalized episodic world models in VLA, enabling embodied robots to accumulate, recall, and predict sequential experiences. As an instantiation of this concept, our unified TriVLA realizes the episodic world model through a triple-system architecture: integrating multimodal grounding from a pretrained VLM (System 2) and temporally rich dynamics perception from a video diffusion model (System 3). This enables the agent to accumulate and recall sequential experiences, interpret current contexts, and predict future environmental evolution. Guided by episodic representations that span both the past and anticipated future, the downstream policy (System 1) generates coherent, context-aware action sequences through flow-matching and cross-modal attention mechanisms. Experimental results show that TriVLA operates efficiently at approximately 36 Hz and consistently outperforms baseline models on standard benchmarks and challenging real-world manipulation tasks. It demonstrates strong long-horizon planning and open-ended intent understanding, showcasing the advantages of episodic world model-inspired reasoning for robust, generalizable robot intelligence. Project Page: https://zhenyangliu.github.io/TriVLA/.
