CodeTool: Enhancing Programmatic Tool Invocation of LLMs via Process Supervision

• URL: http://arxiv.org/abs/2503.20840v1
• Date: Wed, 26 Mar 2025 13:19:01 GMT
• Title: CodeTool: Enhancing Programmatic Tool Invocation of LLMs via Process Supervision
• Authors: Yifei Lu, Fanghua Ye, Jian Li, Qiang Gao, Cheng Liu, Haibo Luo, Nan Du, Xiaolong Li, Feiliang Ren,
• Abstract summary: We propose CodeTool, a framework for stepwise code generation that improves Large Language Models.<n>CodeTool incorporates two distinct process rewards: the On-the-spot Reward, which provides immediate feedback on the accuracy of each tool invocation, and the Latent Reward, which assesses the contribution of each step toward overall task completion.
• Score: 29.784535709320544
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Tool invocation significantly enhances the capabilities of Large Language Models (LLMs), yet challenges persist, particularly in complex task scenarios. Current methods, such as instruction-enhanced reasoning and supervised fine-tuning, often result in unnecessarily long reasoning paths and face difficulties in verifying the correctness of intermediate steps. In this paper, we propose CodeTool, a novel framework for stepwise code generation that improves LLM tool invocation by leveraging the concise and easily verifiable nature of code. CodeTool incorporates two distinct process rewards: the On-the-spot Reward, which provides immediate feedback on the accuracy of each tool invocation, and the Latent Reward, which assesses the contribution of each step toward overall task completion. By maximizing the cumulative reward of the On-the-spot and Latend Rewards at each step, LLMs are guided to follow efficient and accurate reasoning paths. Extensive experiments on StableToolBench and RestBench-TMDB demonstrate the superiority of CodeTool over existing approaches.

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