The authors formalize multi-bit text watermarking as communication over a constrained watermark channel and identify the mutual information governing reliable message recovery.
Per-key f-divergence constraints enable secure multi-bit text watermarking
SimpleMark uses LDPC codes and simplex optimal transport to embed messages while enforcing a divergence budget at each token step.
Big Tech
Benjamin D. Kim · Wanrong Zhang · Weitong Ruan · Lav R. Varshney · Daniel Alabi
Massachusetts Institute of Technology · Amazon · Stony Brook University · University of Illinois Urbana-Champaign
Research Digest··3 min read
The authors introduce a framework for multi-bit text watermarking that defines security through per-key f-divergence from the base language model distribution.
Why this paper
From Amazon and 3 others
In one line
SimpleMark enforces per-key f-divergence budgets in multi-bit text watermarking, achieving lower detectability with competitive recovery and quality.
What we could check
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