SynthSentry: Detecting Synthetic Data Contamination in Language Model Training Data

arXiv:2609.12353 · cs.CL · Submitted 2026-09-11 · Read on arXiv

cs.CL

Submitted: 2026-09-11

Updated: 2026-09-11

Comments: 11 pages, 3 Figures, 2026 IEEE Asia Conference on Innovation in Emerging Technology

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Pruning — 3× in this paper · explained in 4 episodes
• Accuracy — 2× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Lexical Diversity — 1× in this paper · explained in 2 episodes
• Model-Agnostic — 1× in this paper · explained in 2 episodes
• Perplexity — 1× in this paper · explained in 3 episodes
• Provenance — 1× in this paper · explained in 4 episodes

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