Challenge: generative large language models (LLMs) have found their application in data augmentation tasks, where small numbers of text samples are paraphrased and then used to fine-tune downstream models.
Approach: They propose to use taboo words, hints by previous outlier solutions, and chaining on previous outliest solutions to augment text datasets as part of instructions to LLMs augmenting text dataset.
Outcome: The proposed methods increase diversity of generated texts, but performance is highest with hints.

Similar Papers

Diversity-oriented Data Augmentation with Large Language Models (2025.acl-long)

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Challenge: Existing data augmentation methods focus on increasing sample numbers while neglecting sample distribution diversity, which can lead to model overfitting.
Approach: They propose a data augmentation framework that focuses on sample distribution diversity and trains a large language model as a diverse paraphraser.
Outcome: The proposed framework achieves an average performance gain of 10.52% surpassing the runner-up baseline with more than three percentage points.
LLMs vs Established Text Augmentation Techniques for Classification: When do the Benefits Outweight the Costs? (2025.naacl-long)

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Challenge: Recent studies have compared LLM-based augmentations with established methods, but the results are contradictory.
Approach: They compare the performance of LLM-based augmentation methods with established ones . they found that LLMs are worthy of deployment only when very small number of seeds is used .
Outcome: The proposed methods are worthy of deployment only when very small number of seeds is used.
Use Random Selection for Now: Investigation of Few-Shot Selection Strategies in LLM-based Text Augmentation (2025.findings-emnlp)

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Challenge: generative large language models are increasingly used for data augmentation tasks . text samples are mostly selected randomly and a comprehensive overview of other sample selection strategies is lacking.
Approach: They compare random sample selection strategies and random sample sampling strategies to evaluate their effects in a low-resource setting.
Outcome: The proposed model performance improvements are compared with other sample selection strategies.
Increasing Diversity While Maintaining Accuracy: Text Data Generation with Large Language Models and Human Interventions (2023.acl-long)

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Challenge: Large language models (LLMs) can be used to generate text data for training and evaluating other models.
Approach: They propose to use logit suppression and temperature sampling to diversify text generation but at the cost of data accuracy.
Outcome: The proposed approach can increase diversity but at the cost of data accuracy.
Synthetic Eggs in Many Baskets: The Impact of Synthetic Data Diversity on LLM Fine-Tuning (2026.findings-acl)

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Challenge: Increasing demand for training data is causing language models to be trained on synthetic data, a new study finds . fine-tuning models on synthetic datasets reduces self-preference bias .
Approach: They investigate the impact of diversity of synthetic data on fine-tuned large language models.
Outcome: The proposed model can mitigate distribution collapse, maintain diversity of output distribution, and reduce self-preference bias.
Scaling Data Diversity for Fine-Tuning Language Models in Human Alignment (2024.lrec-main)

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Challenge: Large language models (LLMs) can reveal toxic or offensive content inadvertently or intentionally.
Approach: They propose to control the diversity of both sides according to the number of samples for fine-tuning, which can directly reflect their impact.
Outcome: The proposed approach improves the performance of large language models after fine-tuning.
Empowering Large Language Models for Textual Data Augmentation (2024.findings-acl)

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Challenge: True. True. False
Approach: False slants are proposed to generate a large pool of augmentation instructions and select the most suitable task-informed instructions.
Outcome: False omissions: the proposed approach consistently generates augmented data with better quality compared to non-LLM and LLM-based data augmentation methods.
Understanding and Mitigating Bias Inheritance in LLM-based Data Augmentation on Downstream Tasks (2026.acl-long)

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Challenge: Generating synthetic datasets via large language models (LLMs) has emerged as promising approach to improve LLM performance.
Approach: They propose three mitigation strategies to mitigate bias inheritance in LLMs by analyzing real and LLM-augmented data.
Outcome: The proposed methods can work differently on different tasks and biases.
Cross-Lingual Transfer of Debiasing and Detoxification in Multilingual LLMs: An Extensive Investigation (2025.findings-acl)

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Challenge: Prior work has shown that finetuning on specialized datasets can mitigate this behavior, and doing so in English can transfer to other languages.
Approach: They propose to fine tune generative large language models to provide safe responses to harmful user input and to use direct preference optimization to mitigate toxicity.
Outcome: The proposed models show that finetuning on specialized datasets reduces biases but also produces fluent and diverse text in non-English languages.
ROBBIE: Robust Bias Evaluation of Large Generative Language Models (2023.emnlp-main)

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Challenge: generative large language models (LLMs) are becoming more performant and prevalent . we need tools to measure and improve their fairness, authors say .
Approach: They propose to compare 6 different prompt-based bias and toxicity metrics across 12 demographic axes and 5 families of generative large language models.
Outcome: The proposed model can be tested on more datasets to better characterize and mitigate biases . the study compared 6 prompt-based bias and toxicity metrics across 12 demographic axes and 5 families of generative large language models.

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