Do AI Agents Know When a Task Is Simple? Toward Complexity-Aware Reasoning and Execution
作者: Junjie Yin, Xinyu Feng
分类: cs.AI, cs.CL, cs.SE, eess.SY
发布日期: 2026-07-14
备注: 27 pages, 8 figures, 8 tables. Code and benchmark: https://github.com/eejyin/Do-AI-Agents-Know-When-a-Task-Is-Simple-Toward-Complexity-Aware-Reasoning-and-Execution
💡 一句话要点
提出E3框架以解决任务复杂性评估问题
🎯 匹配领域: 支柱九:具身大模型 (Embodied Foundation Models)
关键词: 任务复杂性评估 执行范围估计 大型语言模型 工程基础AI 自动化工作流
📋 核心要点
- 现有的LLM代理在执行任务时缺乏对任务复杂性的评估,导致不必要的资源浪费。
- 论文提出E3框架,通过初步估计、执行最小路径和在失败时扩展范围来优化任务执行。
- 在MSE-Bench基准测试中,E3实现了100%的成功率,同时显著降低了成本和资源消耗。
📝 摘要(中文)
大型语言模型(LLM)代理在自动化多步骤工程和信息工作流中越来越普遍,但它们很少考虑任务的实际难度。现有方法往往采用最大上下文优先策略,导致简单任务变得复杂。本文提出了一种任务感知的执行范围估计方法,定义了最小充分执行和代理认知冗余比(ACRR),并提出E3框架:代理首先估计初始操作点,执行最小可行路径,只有在验证失败时才扩展范围。在MSE-Bench基准测试中,E3在成功率达到100%的同时,成本降低85%,令牌数减少91%,检查文件数减少92%。此外,E3在实际模型中也表现出色,验证了其在真实开源库编辑中的有效性。
🔬 方法详解
问题定义:本文旨在解决LLM代理在执行任务时缺乏任务复杂性评估的问题。现有方法往往导致简单任务变得复杂,增加了不必要的资源消耗和时间浪费。
核心思路:论文提出的E3框架通过任务感知的执行范围估计,帮助代理判断任务的难度和所需信息,从而优化执行策略。设计这一框架的目的是为了减少冗余操作,提高执行效率。
技术框架:E3框架包含三个主要模块:估计(Estimate)、执行(Execute)和扩展(Expand)。首先,代理估计任务的初始操作点;然后,执行最小可行路径;最后,只有在验证失败时才扩展执行范围。
关键创新:最重要的技术创新在于引入了代理认知冗余比(ACRR)和最小充分执行的概念,这与现有方法的最大上下文优先策略形成鲜明对比,显著提高了执行效率。
关键设计:E3框架的设计中,关键参数包括初始操作点的估计方法、最小可行路径的定义,以及在验证失败时的扩展策略。这些设计确保了代理在执行任务时的高效性和准确性。
🖼️ 关键图片
📊 实验亮点
在MSE-Bench基准测试中,E3框架实现了100%的成功率,同时成本降低了85%,令牌数减少了91%,检查文件数减少了92%。此外,E3在实际应用中也表现出色,验证了其在真实开源库编辑中的有效性,显示出其在资源利用上的显著优势。
🎯 应用场景
该研究的潜在应用领域包括软件开发、自动化测试和工程管理等。通过提高任务执行的效率和准确性,E3框架能够帮助开发者更好地管理复杂项目,减少资源浪费,提升工作效率。未来,该框架可能在更广泛的AI应用中发挥重要作用,推动工程基础的人工智能(EGAI)发展。
📄 摘要(原文)
Large language model (LLM) agents increasingly automate multi-step engineering and informatics workflows, yet they rarely ask how much effort a task actually requires. They often follow a maximum-context-first strategy--re-reading files and dependencies they have already seen--turning a one-line edit into a small code-base audit. We argue the missing capability is task-aware execution-scope estimation: judging a task's difficulty, the information it truly needs, and the shortest reliable path before committing budget. We formalize minimum-sufficient execution and the Agent Cognitive Redundancy Ratio (ACRR), and propose E3 (Estimate, Execute, Expand): the agent estimates an initial operating point, executes a minimum viable path, and expands scope only when verification fails. On MSE-Bench--a deterministic benchmark of 121 edits in a capability-controlled simulator--E3 matches the strongest baseline's 100% success while cutting cost by 85%, tokens by 91%, and inspected files by 92%, and further beats a strong adaptive retrieval baseline by 16%; the gains survive held-out instruction wording and essentially every cost weighting. A companion real-model harness (LLM-Case) corroborates the effect on a live gpt-4o agent editing a real open-source library, with every candidate patch graded by actually running the project's real pytest suite against a measured oracle: the over-reading is milder but real, and E3 is the leanest and fastest policy at comparable task success--its one shortfall a provider rate-limit, not a wrong edit. We frame this as a controlled probe of execution redundancy, not a measurement of any deployed agent, and position task-aware execution as a step toward engineering-grounded AI (EGAI)--agents whose effort is anchored in the engineering reality of the task. We release the framework and benchmark.