Friday, August 18, 2017

Multi-class vs Multi-label classification

Got nice definitions from the link
https://stats.stackexchange.com/questions/11859/what-is-the-difference-between-multiclass-and-multilabel-problem/168945#168945

Multiclass classification means a classification task with more than two classes; e.g., classify a set of images of fruits which may be oranges, apples, or pears. Multiclass classification makes the assumption that each sample is assigned to one and only one label: a fruit can be either an apple or a pear but not both at the same time.
Multilabel classification assigns to each sample a set of target labels. This can be thought as predicting properties of a data-point that are not mutually exclusive, such as topics that are relevant for a document. A text might be about any of religion, politics, finance or education at the same time or none of these.

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