Author

Warren J. Gross

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Preprint Jul 2026

PPL-Factory: Task-Aware and Budget-Aware Data Selection from Language Modeling to Reasoning

PPL-Factory is proposed, a simple and interpretable data selection framework that combines task-aware perplexity-based scores and data budget-aware selection criteria that outperforms other state-of-the-art data selection methods using only $1\%$ of the training set.

Hang Zhang, Warren J. Gross · 0 citations