CEFW: A Comprehensive Evaluation Framework for Watermark in Large Language Models

Fuente: arXiv
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Autori principali: Zhang, Shuhao, Cheng, Bo, Han, Jiale, Chen, Yuli, Wu, Zhixuan, Li, Changbao, Gu, Pingli
Natura: Preprint
Pubblicazione: 2025
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author Zhang, Shuhao
Cheng, Bo
Han, Jiale
Chen, Yuli
Wu, Zhixuan
Li, Changbao
Gu, Pingli
author_facet Zhang, Shuhao
Cheng, Bo
Han, Jiale
Chen, Yuli
Wu, Zhixuan
Li, Changbao
Gu, Pingli
contents Text watermarking provides an effective solution for identifying synthetic text generated by large language models. However, existing techniques often focus on satisfying specific criteria while ignoring other key aspects, lacking a unified evaluation. To fill this gap, we propose the Comprehensive Evaluation Framework for Watermark (CEFW), a unified framework that comprehensively evaluates watermarking methods across five key dimensions: ease of detection, fidelity of text quality, minimal embedding cost, robustness to adversarial attacks, and imperceptibility to prevent imitation or forgery. By assessing watermarks according to all these key criteria, CEFW offers a thorough evaluation of their practicality and effectiveness. Moreover, we introduce a simple and effective watermarking method called Balanced Watermark (BW), which guarantees robustness and imperceptibility through balancing the way watermark information is added. Extensive experiments show that BW outperforms existing methods in overall performance across all evaluation dimensions. We release our code to the community for future research. https://github.com/DrankXs/BalancedWatermark.
format Preprint
id arxiv_https___arxiv_org_abs_2503_20802
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle CEFW: A Comprehensive Evaluation Framework for Watermark in Large Language Models
Zhang, Shuhao
Cheng, Bo
Han, Jiale
Chen, Yuli
Wu, Zhixuan
Li, Changbao
Gu, Pingli
Cryptography and Security
Artificial Intelligence
Text watermarking provides an effective solution for identifying synthetic text generated by large language models. However, existing techniques often focus on satisfying specific criteria while ignoring other key aspects, lacking a unified evaluation. To fill this gap, we propose the Comprehensive Evaluation Framework for Watermark (CEFW), a unified framework that comprehensively evaluates watermarking methods across five key dimensions: ease of detection, fidelity of text quality, minimal embedding cost, robustness to adversarial attacks, and imperceptibility to prevent imitation or forgery. By assessing watermarks according to all these key criteria, CEFW offers a thorough evaluation of their practicality and effectiveness. Moreover, we introduce a simple and effective watermarking method called Balanced Watermark (BW), which guarantees robustness and imperceptibility through balancing the way watermark information is added. Extensive experiments show that BW outperforms existing methods in overall performance across all evaluation dimensions. We release our code to the community for future research. https://github.com/DrankXs/BalancedWatermark.
title CEFW: A Comprehensive Evaluation Framework for Watermark in Large Language Models
topic Cryptography and Security
Artificial Intelligence
url https://arxiv.org/abs/2503.20802