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arXiv · 2610.24184

Multi-author style detection with stylistic embeddings

Man-Ling Sung·Chak Fai Li·Damianos Karakos·Fred Bernardin·Brian Ulicny
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Abstract

We investigate the use of Large Language Models (LLMs) in multi-author style change detection. Using off-the-shelf LLMs or supervised fine-tuning solely within the target domain fails to yield effective features; for this reason, we propose cross-domain transfer learning with LLM-based embeddings fine-tuned for authorship verification. We fine-tune Mistral-7B embedding model and compare it with DeBERTa, used in the state-of-the-art (SOTA) systems in PAN-25 multi-author writing style analysis challenge. Results show that DeBERTa and Mistral excel in different user-generated text scenarios. We exploit this diversity by combining both embeddings, leading to more effective style change detection.

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Man-Ling Sung, Chak Fai Li, Damianos Karakos, Fred Bernardin, Brian Ulicny. 2026-10-16. Multi-author style detection with stylistic embeddings. https://arxiv.org/abs/2610.24184

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