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Robust Text Watermarking for Large Language Models via Dual Semantic Embeddings

2026-09-07 12:00 Models 🔥 40.2 heat score
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The researchers proposed a new method for generating robust text watermarks for large language models using dual semantic embedding technology. This approach aims to enhance the verifiability and security of text content by embedding invisible markers into the text generated by the model through specific semantic structures, enabling it to resist common adversarial attacks and modification attempts, thereby effectively preventing content from being tampered with or forged.

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A arXiv cs.CL en 2026-09-07 12:00

Robust Text Watermarking for Large Language Models via Dual Semantic Embeddings

本文提出了一种名为双嵌入水印(DEW)的大语言模型语义水印方案,利用上下文和 token 级嵌入增强对改写和翻译的鲁棒性。该方法采用信号处理技术,通过代数向量空间运算生成在语义偏移下能优雅退化的水印信号,并利用伪随机矩阵对嵌入向量进行投影以隐藏水印,其中种子为秘密密钥。实验表明,双嵌入水印在对抗翻译方面具有最先进的鲁棒性,且相比其他语义方案计算开销较低;在低水印强度下,DEW 仍能保持有竞争力的文本质量,表明双嵌入信号是鲁棒语义水印的有前景基础。