跳到正文
Jones Ray

ScholarPulse 日报 2026-09-23

2026-09-23 学术简报:2 篇。GA-Agent 将标准遗传算法与 LLM 智能体分层结合,由 LLM 在元层观察已完成运行、诊断与用户控制目标的差距,并更新 GA 超参数,用于完成 PID 控制器合成。

今日速览

序号标题来源日期主题推荐等级
1GA-Agent: Large Language Models as Hyperparameter Optimizers for Evolutionary Controller SynthesisarXiv2026-09-23AI-Agent高
2SkillGym: Internalizing Human Skills into LLMs for Real-World Problem SolvingarXiv2026-09-23RAG高

重点论文与技术动态

1. GA-Agent: Large Language Models as Hyperparameter Optimizers for Evolutionary Controller Synthesis

一句话结论

GA-Agent 将标准遗传算法与 LLM 智能体分层结合,由 LLM 在元层观察已完成运行、诊断与用户控制目标的差距,并更新 GA 超参数,用于完成 PID 控制器合成。

核心内容

方法与数据

价值判断

摘要 Tuning PID controllers to satisfy competing objectives - low tracking error, fast settling, limited overshoot, and moderate control effort - is labor-intensive and requires expertise. Genetic algorithms (GAs) offer gradient-free optimization of controller gains against a weighted fitness function, but success depends on meta-level choices: population size, generation budget, gain bounds, and fitness weights. These are usually set by manual trial-and-error or costly bilevel optimization, exposing a tension: GAs excel at dense numerical search, but configuring them needs high-level, context-dependent semantic reasoning. We propose GA-Agent, which decouples these modes. A standard GA handles low-level PID gain optimization. A large language model (LLM) agent operates at the meta-level: it observes completed GA runs, diagnoses gaps versus user control objectives, and proposes updated GA configurations. The architecture uses structured memory, quantitative goal translation, resource-aware termination, and outcome-driven routing. We evaluate GA-Agent on eight control case studies with diverse dynamics (DC motor, inverted pendulum, aircraft pitch, autonomous underwater vehicle, and others). GA-Agent achieves 100% success on all benchmarks, outperforming a Regular GA with fixed hyperparameters in solution quality and sample efficiency. It matches or surpasses a Cascade-GA baseline while reducing function evaluations by one to two orders of magnitude, typically converging in one to three optimization attempts. Sensitivity analysis shows robustness across LLM backbones and memory configurations. A compact memory buffer (size 2-3) and cost-effective models (DeepSeek-V4-Flash at about $0.002 per run) achieve superior performance.

2. SkillGym: Internalizing Human Skills into LLMs for Real-World Problem Solving

一句话结论

SkillGym 将人类编写的智能体技能转为可执行、可验证的训练环境,使 LLM 通过监督微调和结果奖励强化学习内化为可复用能力。

核心内容

方法与数据

价值判断

摘要 Human-written agent skills encode rich workflows for real-world problem solving, but are typically used as external inference-time instructions rather than internalized as reusable model capabilities. We introduce \texttt{SkillGym}, a framework that transforms these skills into executable, verifiable training environments for large language model agents. Its skill-to-task pipeline instantiates concrete tasks, verifies outcomes with code-based checkers, and assesses empirical skill dependence through contrastive executions. We construct and release 2,756 environments across 12 categories and collect 8,364 successful trajectories from multiple models and harnesses, averaging 49 tool calls and over 60k logged text tokens. These resources support supervised fine-tuning on verified workflows and reinforcement learning with outcome-based rewards. Under Claude Code, supervised fine-tuning improves Qwen3.5-35B-A3B by 199 Elo on GDPval-AA v2, 19.10 percentage points on Terminal-Bench 2.1, and 28.13 and 12.38 points on SkillsBench v1.1 with and without skills, respectively. Our 35B \texttt{SkillGym-Agent} reaches 51.47\% on skill-assisted SkillsBench, exceeding reported scores for Claude Sonnet 4.6, GPT-5.4 Mini, and DeepSeek V4 Pro. Without skills, it also surpasses skill-assisted bases under Codex and Claude Code, suggesting reusable procedural competence.