Perplexity - Wikipedia - en.wikipedia.org  ## Metadata - Author: **en.wikipedia.org** - Full Title: Perplexity - Wikipedia - Category: #articles - Tags: #ai #nlp - URL: https://en.wikipedia.org/wiki/Perplexity ## Highlights - In information theory, perplexity is a measurement of how well a probability distribution or probability model predicts a sample. It may be used to compare probability models. A low perplexity indicates the probability distribution is good at predicting the sample