Classification

Classification is a process related to categorization, the process in which ideas and objects are recognized, differentiated and understood. Classification is the grouping of related facts into classes. It may also refer to a process which brings together like things and separates unlike things.

## Contents

* 1 Business, organizations, and economics
* 2 Mathematics
* 3 Media
* 4 Science
* 5 Organizations involved in classification
* 6 Other uses
* 7 See also
* 8 External links

## Business, organizations, and economics

* Classification of customers, for marketing (as in Master data management) or for profitability (e.g. by Activity-based costing)
* Classified information, as in legal or government documentation
* Job classification, as in job analysis
* Standard Industrial Classification, economic activities

## Mathematics

* Attribute-value system, a basic knowledge representation framework
* Classification theorems in mathematics
* Mathematical classification, grouping mathematical objects based on a property that all those objects share
* Statistical classification, identifying to which of a set of categories a new observation belongs, on the basis of a training set of data

## Media

* Classification (literature), a figure of speech linking a proper noun to a common noun using the or other articles
* Decimal classification, decimal classification systems
* Document classification, a problem in library science, information science and computer science
* Classified information, sensitive information to which access is restricted by law or regulation to particular classes of people
* Library classification, a system of coding, assorting and organizing library materials according to their subject
* Image classification in computer vision
* Motion picture rating system, for film classification

## Science

* Scientific classification (disambiguation)
* Biological classification of organisms
* Chemical classification
* Medical classification, the process of transforming descriptions of medical diagnoses and procedures into universal medical code numbers
* Taxonomic classification, also known as classification of species
* Cladistics, an approach using similarities

## Organizations involved in classification

* International Society for Knowledge Organization

## Other uses

* An industrial process such as mechanical screening for sorting materials by size, shape, density, etc.
* Civil service classification, personnel grades in government
* Classification of swords
* Classification of wine
* Locomotive classification
* Product classification
* Security classification, information to which access is restricted by law or regulation
* Ship classification society, a non-governmental organization that establishes and maintains technical standards for the construction and operation of ships and offshore structures

## See also

* Class (disambiguation)
* Classified (disambiguation)
* Classifier (disambiguation)
* Data classification (disambiguation)
* Order
* Taxonomy

## External links

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