Synthline: A Product Line Approach for Synthetic Requirements Engineering Data Generation using Large Language Models

• URL: http://arxiv.org/abs/2505.03265v1
• Date: Tue, 06 May 2025 07:57:16 GMT
• Title: Synthline: A Product Line Approach for Synthetic Requirements Engineering Data Generation using Large Language Models
• Authors: Abdelkarim El-Hajjami, Camille Salinesi,
• Abstract summary: This paper introduces Synthline, a Product Line (PL) approach that leverages Large Language Models to generate synthetic Requirements Engineering (RE) data.<n>Our analysis reveals that while synthetic datasets exhibit less diversity than real data, they are good enough to serve as viable training resources.<n>Our evaluation shows that combining synthetic and real data leads to substantial performance improvements.
• Score: 0.5156484100374059
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: While modern Requirements Engineering (RE) heavily relies on natural language processing and Machine Learning (ML) techniques, their effectiveness is limited by the scarcity of high-quality datasets. This paper introduces Synthline, a Product Line (PL) approach that leverages Large Language Models to systematically generate synthetic RE data for classification-based use cases. Through an empirical evaluation conducted in the context of using ML for the identification of requirements specification defects, we investigated both the diversity of the generated data and its utility for training downstream models. Our analysis reveals that while synthetic datasets exhibit less diversity than real data, they are good enough to serve as viable training resources. Moreover, our evaluation shows that combining synthetic and real data leads to substantial performance improvements. Specifically, hybrid approaches achieve up to 85% improvement in precision and a 2x increase in recall compared to models trained exclusively on real data. These findings demonstrate the potential of PL-based synthetic data generation to address data scarcity in RE. We make both our implementation and generated datasets publicly available to support reproducibility and advancement in the field.

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