Verified65% confidenceFactExact time
Watermark detection is essentially a statistical hypothesis testing problem: by computing the z-score of the number of green-list tokens, text is determined to contain a watermark when the z-value exceeds a preset threshold.
3
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65%
Confidence
Long-term
Relevance
8/23/2026
First Seen
Sources
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Related Claims
UnverifiedText watermark detection is essentially a hypothesis testing problem; detectors measure evidence strength by computing log-likelihood ratios, and the shorter the text, the lower the statistical test power and the higher the risk of misclassification.79% similarPartially VerifiedToken-sampling-based statistical watermarks subtly bias certain token combinations during the sampling phase through a key-controlled pseudorandom function, allowing the watermark signal to be statistically detected from sufficiently long text.77% similarUnverifiedWatermarking schemes are proactive methods that embed signals at generation time, with false positive rates theoretically controllable precisely via a key, whereas post-hoc detection tools such as GPTZero, Turnitin, and Originality.ai consistently suffer from high false positive rates.73% similarUnverifiedKGW水印检测时验证方统计文本中绿名单token比例是否显著高于随机基线，检测不需要访问模型权重72% similarUnverifiedDetection robustness—the ability of a watermark to remain detectable after the sequence has undergone mutation, evolutionary optimization, or deliberate tampering—is a core metric for the practical application of watermarking technology.68% similar
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