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What does "precision" mean in programming?
precision is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
The consistency or exactness of repeated measurements. In machine learning, precision is the fraction of positive predictions that are actually correct — it measures how often the model is right when it says 'yes'. High precision means few false positives.
Example
"The spam filter has 99% precision — almost every email it flags as spam really is spam."
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