Selective Perception: Optimizing State Descriptions with Reinforcement Learning for Language Model Actors

• URL: http://arxiv.org/abs/2307.11922v1
• Date: Fri, 21 Jul 2023 22:02:50 GMT
• Title: Selective Perception: Optimizing State Descriptions with Reinforcement Learning for Language Model Actors
• Authors: Kolby Nottingham, Yasaman Razeghi, Kyungmin Kim, JB Lanier, Pierre Baldi, Roy Fox, Sameer Singh
• Abstract summary: Large language models (LLMs) are being applied as actors for sequential decision making tasks in domains such as robotics and games. Previous work does little to explore what environment state information is provided to LLM actors via language. We propose Brief Language INputs for DEcision-making Responses (BLINDER), a method for automatically selecting concise state descriptions.
• Score: 40.18762220245365
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Large language models (LLMs) are being applied as actors for sequential decision making tasks in domains such as robotics and games, utilizing their general world knowledge and planning abilities. However, previous work does little to explore what environment state information is provided to LLM actors via language. Exhaustively describing high-dimensional states can impair performance and raise inference costs for LLM actors. Previous LLM actors avoid the issue by relying on hand-engineered, task-specific protocols to determine which features to communicate about a state and which to leave out. In this work, we propose Brief Language INputs for DEcision-making Responses (BLINDER), a method for automatically selecting concise state descriptions by learning a value function for task-conditioned state descriptions. We evaluate BLINDER on the challenging video game NetHack and a robotic manipulation task. Our method improves task success rate, reduces input size and compute costs, and generalizes between LLM actors.

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