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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Class Imbalance

Data & Datasets · Level 2 of 5

Class Imbalance

A large difference in the frequency of target classes.

An aggregate score may favor common classes and conceal rare-class failures.

Example

Only one in a thousand transactions is labeled fraudulent.

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Audio transcript

Class Imbalance. A large difference in the frequency of target classes. An aggregate score may favor common classes and conceal rare-class failures. For example: Only one in a thousand transactions is labeled fraudulent.

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