A Framework for Generating Valid Context-Specific Benchmarks through Expert Guidance

Kimberly Le Truong, Nari Johnson, Anna Kawakami, Hoda Heidari


Abstract
This paper presents an end-to-end approach for generating context-specific large language model (LLM) benchmark datasets by combining expert input with synthetic data generation. Existing benchmark construction methods often trade off *validity* and *scalability*: datasets designed with domain experts can produce high-quality evaluations but are slow and costly to create, while synthetically generating data may scale efficiently but often results in unrealistic, redundant, or out-of-scope examples. To address this gap, we introduce a schema eliciting key information about the goals, scope, and context of an evaluation task, and use this information to guide synthetic data generation. We further define four criteria grounded in measurement validity for assessing dataset quality: coverage, diversity, content realism, and stylistic realism. Using these criteria, we show how expert-informed scaffolds can guide synthetic data generation toward more valid benchmarks. Through quantitative evaluations and a real-world case study with domain experts, we demonstrate that our approach improves benchmark data quality over existing methods while preserving validity. We additionally analyze how different types of schema information affect different dataset quality criteria, and provide practical guidance on which information to prioritize collecting under resource constraints.
Anthology ID:
2026.findings-emnlp.2292
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2026
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
Findings
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
49117–49152
Language:
URL:
https://aclanthology.org/2026.findings-emnlp.2292/
DOI:
10.18653/2026.findings-emnlp.2292
Bibkey:
Cite (ACL):
Kimberly Le Truong, Nari Johnson, Anna Kawakami, and Hoda Heidari. 2026. A Framework for Generating Valid Context-Specific Benchmarks through Expert Guidance. In Findings of the Association for Computational Linguistics: EMNLP 2026, pages 49117–49152, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
A Framework for Generating Valid Context-Specific Benchmarks through Expert Guidance (Truong et al., Findings 2026)
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PDF:
https://aclanthology.org/2026.findings-emnlp.2292.pdf