TALE: A Tool-Augmented Framework for Reference-Free Evaluation of Large Language Models

• URL: http://arxiv.org/abs/2504.07385v1
• Date: Thu, 10 Apr 2025 02:08:41 GMT
• Title: TALE: A Tool-Augmented Framework for Reference-Free Evaluation of Large Language Models
• Authors: Sher Badshah, Ali Emami, Hassan Sajjad,
• Abstract summary: Large Language Models (LLMs) are increasingly integrated into real-world, autonomous applications.<n> relying on static, pre-annotated references for evaluation poses significant challenges in cost, scalability, and completeness.<n>We propose Tool-Augmented LLM Evaluation (TALE), a framework to assess LLM outputs without predetermined ground-truth answers.
• Score: 16.857263524133284
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: As Large Language Models (LLMs) become increasingly integrated into real-world, autonomous applications, relying on static, pre-annotated references for evaluation poses significant challenges in cost, scalability, and completeness. We propose Tool-Augmented LLM Evaluation (TALE), a framework to assess LLM outputs without predetermined ground-truth answers. Unlike conventional metrics that compare to fixed references or depend solely on LLM-as-a-judge knowledge, TALE employs an agent with tool-access capabilities that actively retrieves and synthesizes external evidence. It iteratively generates web queries, collects information, summarizes findings, and refines subsequent searches through reflection. By shifting away from static references, TALE aligns with free-form question-answering tasks common in real-world scenarios. Experimental results on multiple free-form QA benchmarks show that TALE not only outperforms standard reference-based metrics for measuring response accuracy but also achieves substantial to near-perfect agreement with human evaluations. TALE enhances the reliability of LLM evaluations in real-world, dynamic scenarios without relying on static references.

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