Classifier may refer to: *

Classifier (linguistics) A classifier (abbreviated or ) is a word or affix that accompanies nouns and can be considered to "classify" a noun depending on the type of its referent. It is also sometimes called a measure word or counter word. Classifiers play an important ...

, or ''measure word'', especially in East Asian languages **

Classifier handshape In sign languages, the term classifier construction (also known as classifier predicates) refers to a morphological system that can express events and states. They use handshape classifiers to represent movement, location, and shape. Classifie ...

, in sign languages * Classifier (UML), in software engineering *

Classification rule Given a population whose members each belong to one of a number of different sets or classes, a classification rule or classifier is a procedure by which the elements of the population set are each predicted to belong to one of the classes. A perfe ...

, in

statistical classification In statistics, classification is the problem of identifying which of a set of categories (sub-populations) an observation (or observations) belongs to. Examples are assigning a given email to the "spam" or "non-spam" class, and assigning a diag ...

, e.g.: ** Hierarchical classifier ** Linear classifier * Deductive classifier * Subobject classifier, in category theory *An

air classifier An air classifier is an industrial machine which separates materials by a combination of size, shape, and density. It works by injecting the material stream to be sorted into a chamber which contains a column of rising air. Inside the separation ...

or similar machine for sorting materials * Classifier (machine learning)

See also