Chengrui Huang


2025

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TTPA: Token-level Tool-use Preference Alignment Training Framework with Fine-grained Evaluation
Chengrui Huang | Shen Gao | Zhengliang Shi | Dongsheng Wang | Shuo Shang
Findings of the Association for Computational Linguistics: EMNLP 2025

Existing tool-learning methods usually rely on supervised fine-tuning, they often overlook fine-grained optimization of internal tool call details, leading to limitations in preference alignment and error discrimination. To overcome these challenges, we propose **T**oken-level **T**ool-use **P**reference **A**lignment Training Framework (TTPA), a training paradigm for constructing token-level tool-use preference datasets that align LLMs with fine-grained preferences using a novel error-oriented scoring mechanism. TTPA first introduces reversed dataset construction, a method for creating high-quality, multi-turn tool-use datasets by reversing the generation flow. Additionally, we propose _Preference Oriented Tool-use Dataset Construction_ to capture fine-grained preferences by modeling token-level differences during generation. To address biases in scoring, we introduce the _Error-oriented Scoring Mechanism_, which quantifies tool-call errors and can be used as a training signal. Extensive experiments on three diverse benchmark datasets demonstrate that TTPA significantly improves tool-using performance while showing strong generalization ability across models and datasets.

2024

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360∘REA: Towards A Reusable Experience Accumulation with 360∘ Assessment for Multi-Agent System
Shen Gao | Hao Li | Zhengliang Shi | Chengrui Huang | Quan Tu | Shuo Shang | Zhiliang Tian | Minlie Huang
Findings of the Association for Computational Linguistics: ACL 2024