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Vocabulary

Understand the term. Connect the concept.

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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Imputation

Data & Datasets · Level 2 of 5

Imputation

Replacing missing values using a specified rule or estimated model.

The imputer should be fitted on training data to prevent leakage.

Example

Missing training measurements are replaced using training-set medians.

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Audio transcript

Imputation. Replacing missing values using a specified rule or estimated model. The imputer should be fitted on training data to prevent leakage. For example: Missing training measurements are replaced using training-set medians.

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This helps you prevent misleading experiments caused by data preparation and split mistakes.

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