Meet Eureka: A Human-Level Reward Design Algorithm Powered by Large Language Model LLMs

Giant Language Fashions (LLMs) are nice at high-level planning however want to assist grasp low-level duties like pen spinning. Nevertheless, a staff of researchers from NVIDIA, UPenn, Caltech, and UT Austin have developed an algorithm referred to as EUREKA that makes use of superior LLMs, akin to GPT-4, to create reward features for advanced talent acquisition by reinforcement studying. EUREKA outperforms human-engineered rewards by offering safer and higher-quality suggestions by gradient-free, in-context studying based mostly on human suggestions. This breakthrough paves the way in which for LLM-powered talent acquisition, as demonstrated by the simulated Shadow Hand mastering pen spinning methods.

Reward engineering in reinforcement studying has posed challenges, with present strategies like handbook trial-and-error and inverse reinforcement studying needing extra scalability and flexibility. EUREKA introduces an method by utilising LLMs to generate interpretable reward codes, enhancing rewards in real-time. Whereas earlier works have explored LLMs for decision-making, EUREKA is groundbreaking in its software to low-level skill-learning duties, pioneering evolutionary algorithms with LLMs for reward design with out preliminary candidates or few-shot prompting.

LLMs excel in high-level planning however need assistance with low-level abilities like pen spinning. Reward design in reinforcement studying typically depends on time-consuming trial and error. Their examine presents EUREKA leveraging superior coding LLMs, akin to GPT-4, to create reward features for numerous duties autonomously, outperforming human-engineered rewards in numerous environments. EUREKA additionally allows in-context studying from human suggestions, enhancing reward high quality and security. It addresses the problem of dexterous manipulation duties unattainable by handbook reward engineering.

EUREKA, an algorithm powered by LLMs like GPT-4, autonomously generates reward features, excelling in 29 RL environments. It employs in-context studying from human suggestions (RLHF) to boost reward high quality and security with out mannequin updates. EUREKA’s rewards allow coaching a simulated Shadow Hand in pen spinning and speedy pen manipulation. It pioneers evolutionary algorithms with LLMs for reward design, eliminating the necessity for preliminary candidates or few-shot prompting, marking a big development in reinforcement studying.

EUREKA outperforms L2R, showcasing its reward technology expressiveness. EUREKA constantly improves, with its greatest rewards ultimately surpassing human benchmarks. It creates distinctive rewards weakly correlated with human ones, doubtlessly uncovering counterintuitive design rules. Reward reflection enhances efficiency in higher-dimensional duties. Along with curriculum studying, EUREKA succeeds in dexterous pen-spinning duties utilizing a simulated Shadow Hand.

EUREKA, a reward design algorithm pushed by LLMs, attains human-level reward technology, excelling in 83% of duties with a mean of 52% enchancment. Combining LLMs with evolutionary algorithms proves a flexible and scalable method for reward design in difficult, open-ended issues. EUREKA’s success in dexterity is obvious in fixing advanced duties, akin to dexterous pen spinning, utilizing curriculum studying. Its adaptability and substantial efficiency enhancements are promising for numerous reinforcement studying and reward design purposes.

Future analysis avenues embody evaluating EUREKA’s adaptability and efficiency in additional numerous and complicated environments and with totally different robotic designs. Assessing its real-world applicability past simulation is essential. Exploring synergies with reinforcement studying strategies, like model-based strategies or meta-learning, might additional improve EUREKA’s capabilities. Investigating the interpretability of EUREKA’s generated reward features is important for understanding its underlying decision-making processes. Enhancing human suggestions integration and exploring EUREKA’s potential in numerous domains past robotics are promising instructions.

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