SAMark: Self-Anchored Watermarking Achieves Robustness Against Paragraph-Level Paraphrasing
Researchers have introduced SAMark, a self-anchored text watermarking framework designed to withstand paragraph-level paraphrasing attacks by removing dependency on sentence order. SAMark achieves up to a 90.2% true positive rate at a 1% false positive rate under such attacks, outperforming previous baselines by over 30% on average. The method also maintains text generation quality comparable to unwatermarked outputs, addressing the typical trade-off between robustness and quality.
Why it matters: This work advances the detection of AI-generated text by significantly improving watermark robustness against sophisticated paraphrasing, helping to prevent misuse and enhance content authenticity.
Full story at: arXiv Cryptography and Security ↗