LETToT: Label-Free Evaluation of Large Language Models On Tourism Using Expert Tree-of-Thought

Fuente: arXiv
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Autores principales: Qi, Ruiyan, Wen, Congding, Zhou, Weibo, Li, Jiwei, Liang, Shangsong, Li, Lingbo
Formato: Preprint
Publicado: 2025
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author Qi, Ruiyan
Wen, Congding
Zhou, Weibo
Li, Jiwei
Liang, Shangsong
Li, Lingbo
author_facet Qi, Ruiyan
Wen, Congding
Zhou, Weibo
Li, Jiwei
Liang, Shangsong
Li, Lingbo
contents Evaluating large language models (LLMs) in specific domain like tourism remains challenging due to the prohibitive cost of annotated benchmarks and persistent issues like hallucinations. We propose $\textbf{L}$able-Free $\textbf{E}$valuation of LLM on $\textbf{T}$ourism using Expert $\textbf{T}$ree-$\textbf{o}$f-$\textbf{T}$hought (LETToT), a framework that leverages expert-derived reasoning structures-instead of labeled data-to access LLMs in tourism. First, we iteratively refine and validate hierarchical ToT components through alignment with generic quality dimensions and expert feedback. Results demonstrate the effectiveness of our systematically optimized expert ToT with 4.99-14.15\% relative quality gains over baselines. Second, we apply LETToT's optimized expert ToT to evaluate models of varying scales (32B-671B parameters), revealing: (1) Scaling laws persist in specialized domains (DeepSeek-V3 leads), yet reasoning-enhanced smaller models (e.g., DeepSeek-R1-Distill-Llama-70B) close this gap; (2) For sub-72B models, explicit reasoning architectures outperform counterparts in accuracy and conciseness ($p<0.05$). Our work established a scalable, label-free paradigm for domain-specific LLM evaluation, offering a robust alternative to conventional annotated benchmarks.
format Preprint
id arxiv_https___arxiv_org_abs_2508_11280
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle LETToT: Label-Free Evaluation of Large Language Models On Tourism Using Expert Tree-of-Thought
Qi, Ruiyan
Wen, Congding
Zhou, Weibo
Li, Jiwei
Liang, Shangsong
Li, Lingbo
Computation and Language
Artificial Intelligence
Evaluating large language models (LLMs) in specific domain like tourism remains challenging due to the prohibitive cost of annotated benchmarks and persistent issues like hallucinations. We propose $\textbf{L}$able-Free $\textbf{E}$valuation of LLM on $\textbf{T}$ourism using Expert $\textbf{T}$ree-$\textbf{o}$f-$\textbf{T}$hought (LETToT), a framework that leverages expert-derived reasoning structures-instead of labeled data-to access LLMs in tourism. First, we iteratively refine and validate hierarchical ToT components through alignment with generic quality dimensions and expert feedback. Results demonstrate the effectiveness of our systematically optimized expert ToT with 4.99-14.15\% relative quality gains over baselines. Second, we apply LETToT's optimized expert ToT to evaluate models of varying scales (32B-671B parameters), revealing: (1) Scaling laws persist in specialized domains (DeepSeek-V3 leads), yet reasoning-enhanced smaller models (e.g., DeepSeek-R1-Distill-Llama-70B) close this gap; (2) For sub-72B models, explicit reasoning architectures outperform counterparts in accuracy and conciseness ($p<0.05$). Our work established a scalable, label-free paradigm for domain-specific LLM evaluation, offering a robust alternative to conventional annotated benchmarks.
title LETToT: Label-Free Evaluation of Large Language Models On Tourism Using Expert Tree-of-Thought
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2508.11280