arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2406.03474cs.CV
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AD-H:基于分层智能体的语言引导自动驾驶

AD-H: Language-guided Autonomous Driving with Hierarchical Agents

Dalian University of Technology(大连理工大学)

Zaibin Zhang, Talas Fu, Shiyu Tang, Yuanhang Zhang, Yifan Wang, Lijun Wang, Huchuan Lu

AI总结:

提出AD-H分层多智能体框架,上层MLLM规划器生成中层驾驶指令,下层轻量控制器执行连续动作,通过规则重建1.15M中层指令对,以3B+350M参数超越7B模型,实现长时域泛化与指令遵循。

摘要:

语言引导的自动驾驶需要弥合高级自然语言指令与低级车辆控制之间巨大的抽象鸿沟。使用单个多模态大语言模型(MLLM)将语言直接映射到动作的端到端方法难以应对这种不匹配,往往无法利用模型的推理能力,并且在用于微调的驾驶数据集分布之外表现出有限的泛化能力。为了解决这个问题,我们提出了AD-H,一个分层多智能体框架,明确地将高级决策与低级车辆执行分开。在上层,基于MLLM的规划器解释自然语言命令和环境上下文,生成连贯的中层驾驶指令。在下层,轻量级控制器将这些中层指令转换为精确、连续的控制动作。这种分解与每个组件的功能优势相一致:规划器专注于语义推理和任务分解,而控制器确保稳定和准确的执行。为了支持这种层次结构下的大规模训练,我们设计了一个基于规则的流水线,从驾驶信号中重建中层命令,产生了115万对分层注释。大量实验表明,尽管AD-H使用的参数更少(即3B加350M,而对比模型为7B),但它仍优于最先进的模型,并实现了卓越的长时域泛化和指令遵循性能。我们在https://github.com/zhangzaibin/AD-H公开了我们的数据和代码。

英文摘要:

Language-guided autonomous driving requires bridging a large abstraction gap between high-level natural-language instructions and low-level vehicle control. End-to-end approaches that use a single multimodal large language model (MLLM) to map language directly to actions struggle with this mismatch, often failing to exploit the reasoning capabilities of the model and exhibiting limited generalization beyond the distributions of driving datasets used for fine-tuning. To address this issue, we propose AD-H, a hierarchical multi-agent framework that explicitly separates high-level decision-making from low-level vehicle execution. At the upper level, an MLLM-based planner interprets natural-language commands and environmental context to generate coherent mid-level driving instructions. At the lower level, a lightweight controller converts these mid-level instructions into precise, continuous control actions. This decomposition aligns with the functional strengths of each component: the planner focuses on semantic reasoning and task decomposition, while the controller ensures stable and accurate actuation. To support large-scale training under this hierarchy, we design a rule-based pipeline that reconstructs mid-level commands from driving signals, producing 1.15 million hierarchical annotation pairs. Extensive experiments show that AD-H outperforms state-of-the-art models despite using fewer parameters, namely 3B plus 350M compared with 7B, and achieves superior long-horizon generalization and instruction-following performance. We make our data and code publicly accessible at https://github.com/zhangzaibin/AD-H

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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