Synthetic Data Generation Using Large Language Models: Advances in Text and Code

• URL: http://arxiv.org/abs/2503.14023v1
• Date: Tue, 18 Mar 2025 08:34:03 GMT
• Title: Synthetic Data Generation Using Large Language Models: Advances in Text and Code
• Authors: Mihai Nadas, Laura Diosan, Andreea Tomescu,
• Abstract summary: Large language models (LLMs) have unlocked new possibilities for generating synthetic training data in both natural language and code.<n>We show how these methods enrich low-resource tasks such as classification and question answering.<n>We address challenges like factual inaccuracies in generated text, lack of stylistic realism, and the risk of bias amplification.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large language models (LLMs) have unlocked new possibilities for generating synthetic training data in both natural language and code. By producing artificial but task-relevant examples, these models can significantly augment or even replace real-world datasets, especially when labeled data is scarce or sensitive. This paper surveys recent advances in using LLMs to create synthetic text and code, emphasizing prompt-based generation, retrieval-augmented pipelines, and iterative self-refinement. We show how these methods enrich low-resource tasks such as classification and question answering, as well as code-centric applications such as instruction tuning, code translation, and bug repair, by enabling automated verification of functional correctness. Alongside potential benefits like cost-effectiveness, broad coverage, and controllable diversity, we address challenges such as factual inaccuracies in generated text, lack of stylistic realism, and the risk of bias amplification. Proposed mitigations include filtering and weighting outputs and reinforcement learning with execution feedback for code. We conclude with open research directions like automated prompt engineering, cross-modal data synthesis, and robust evaluation frameworks, highlighting the importance of LLM-generated synthetic data in advancing AI while emphasizing ethical and quality safeguards.

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