LLMs in the Imaginarium: Tool Learning through Simulated Trial and Error
arxiv(2024)
摘要
Tools are essential for large language models (LLMs) to acquire up-to-date
information and take consequential actions in external environments. Existing
work on tool-augmented LLMs primarily focuses on the broad coverage of tools
and the flexibility of adding new tools. However, a critical aspect that has
surprisingly been understudied is simply how accurately an LLM uses tools for
which it has been trained. We find that existing LLMs, including GPT-4 and
open-source LLMs specifically fine-tuned for tool use, only reach a correctness
rate in the range of 30
a biologically inspired method for tool-augmented LLMs, simulated trial and
error (STE), that orchestrates three key mechanisms for successful tool use
behaviors in the biological system: trial and error, imagination, and memory.
Specifically, STE leverages an LLM's 'imagination' to simulate plausible
scenarios for using a tool, after which the LLM interacts with the tool to
learn from its execution feedback. Both short-term and long-term memory are
employed to improve the depth and breadth of the exploration, respectively.
Comprehensive experiments on ToolBench show that STE substantially improves
tool learning for LLMs under both in-context learning and fine-tuning settings,
bringing a boost of 46.7
GPT-4. We also show effective continual learning of tools via a simple
experience replay strategy.
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