# Metadata
Source URL:: https://en.wikipedia.org/wiki/Perplexity
Topics:: #ai, #nlp
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# Perplexity - Wikipedia
## Highlights
> [!quote]+ Updated on 311022_095930
>
> 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