AI Detection•By Pankaj Verma••6 min read
How AI Detection Works: Perplexity, Burstiness & Probability
Learn the core metrics behind AI detectors: perplexity, burstiness, and token probability distributions.
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The Mathematics of Detection
AI detectors evaluate two primary mathematical metrics:
- Perplexity: A measure of how likely a word is to follow the previous word. Low perplexity indicates standard AI predictability.
- Burstiness: The variation in sentence length and structure across a document. High burstiness is typical of human writing.
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