Classification

Classification is a general process related to categorization, the process in which ideas and objects are recognized, differentiated, and understood. A classification system is an approach to accomplishing classification.

Classification may refer specifically to:

Mathematics

• Statistical classification, identifying to which of a set of categories a new observation belongs, on the basis of a training set of data
• Mathematical classification, a collection of sets which can be unambiguously defined by a property that all its members share
• Classification theorems in mathematics
• Attribute-value system, a basic knowledge representation framework

Media

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

Science

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

Business, organizations, and economics

• Classification of customers, for marketing (as in Master data management) or for profitability (e.g. by Activity-Based Costing)
• Standard Industrial Classification, economic activities
• Job classification, as in job analysis

Other uses

• Classification in machine learning, supervised learning
• Civil service classification, personnel grades in government
• Classification society, a non-governmental organization that establishes and maintains technical standards for the construction and operation of ships and offshore structures
• Product classification
• Locomotive classification
• Classification of wine
• An industrial Process such as mechanical screening for sorting materials by size, shape, and density, etc
• Classification of swords

Organizations involved in classification

• International Society for Knowledge Organization

See also

• Class (disambiguation)

• Data classification (disambiguation)
• Classified (disambiguation)
• Classifier (disambiguation)
• Taxonomy (disambiguation)