Categorical data: Difference between revisions

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{{see also|Machine learning terms}}
{{see also|Machine learning terms}}
==Introduction==
==Introduction==
In [[machine learning]], categorical data represents qualitative or nominal [[feature]]s rather than numerical or [[continuous features]]. It often represents attributes or characteristics of objects or events which cannot be quantified quantitatively. Categorical data plays an essential role in many machine learning tasks such as [[classification]], [[clustering]] and [[regression]].
In [[machine learning]], categorical data represents qualitative or nominal [[feature]]s rather than numerical or [[continuous feature]]s. It often represents attributes or characteristics of objects or events which cannot be quantified quantitatively. Categorical data plays an essential role in many machine learning tasks such as [[classification]], [[clustering]] and [[regression]].


Categorical data is sometimes known as [[discrete feature]]s.
Categorical data is sometimes known as [[discrete feature]]s.