Vocabulary

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A practical dictionary of 512 AI, machine learning, mathematics, and programming terms from HerbDev’s AI Vocabulary app. Start with a definition, explore an example, then follow the concepts behind it.

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Prior

Statistics & Probability · Level 2 of 5

Prior

A probability distribution expressing uncertainty before incorporating specified data.

A prior is part of a model and can strongly matter with limited data.

Example

A parameter is initially believed to lie near zero.

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Audio transcript

Prior. A probability distribution expressing uncertainty before incorporating specified data. A prior is part of a model and can strongly matter with limited data. For example: A parameter is initially believed to lie near zero.

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This helps you interpret numerical evidence without overstating what it establishes.

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Distribution

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