LLM paraphrasing of fake news degrades detector performance across 17 detectors, with Pegasus evading best and a sentiment shift that BERTScore fails to capture.
Paraphrasing with Large Language Models
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abstract
Recently, large language models such as GPT-2 have shown themselves to be extremely adept at text generation and have also been able to achieve high-quality results in many downstream NLP tasks such as text classification, sentiment analysis and question answering with the aid of fine-tuning. We present a useful technique for using a large language model to perform the task of paraphrasing on a variety of texts and subjects. Our approach is demonstrated to be capable of generating paraphrases not only at a sentence level but also for longer spans of text such as paragraphs without needing to break the text into smaller chunks.
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Fake News Detection After LLM Laundering: Measurement and Explanation
LLM paraphrasing of fake news degrades detector performance across 17 detectors, with Pegasus evading best and a sentiment shift that BERTScore fails to capture.