Classification may refer to:
  • Library classification
    Library classification
    A library classification is a system of coding and organizing documents or library materials according to their subject and allocating a call number to that information resource...

     and classification in general
  • Taxonomic classification (see Taxonomy
    Taxonomy is the science of identifying and naming species, and arranging them into a classification. The field of taxonomy, sometimes referred to as "biological taxonomy", revolves around the description and use of taxonomic units, known as taxa...

  • Biological classification
    Biological classification
    Biological classification, or scientific classification in biology, is a method to group and categorize organisms by biological type, such as genus or species. Biological classification is part of scientific taxonomy....

     of organisms
  • Medical classification
    Medical classification
    Medical classification, or medical coding, is the process of transforming descriptions of medical diagnoses and procedures into universal medical code numbers...

  • Scientific classification (disambiguation)
    Scientific classification (disambiguation)
    Scientific classification may refer to:* Chemical classification* Taxonomy, the practice and science of categorization* Mathematical classification, construction of subsets into a set-Biology:* Biological classification...

  • Classification (literature)
    Classification (literature)
    Classification is a figure of speech linking a proper noun to a common noun using the or other articles.- Bibliography :*Marcello Sorce Keller, "The Problem of Classification in Folksong Research: a Short History", Folklore, XCV, no. 1, 100-104....

  • Supervised learning (see Classification in machine learning
    Classification in machine learning
    In machine learning and pattern recognition, classification refers to an algorithmic procedure for assigning a given piece of input data into one of a given number of categories...

  • Statistical classification
  • Mathematical classification
    Class (set theory)
    In set theory and its applications throughout mathematics, a class is a collection of sets which can be unambiguously defined by a property that all its members share. The precise definition of "class" depends on foundational context...

  • Document classification
    Document classification
    Document classification or document categorization is a problem in both library science, information science and computer science. The task is to assign a document to one or more classes or categories. This may be done "manually" or algorithmically...

  • Classified information
    Classified information
    Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

     - sensitive information to which access is restricted by law or regulation to particular classes of people.
  • Classification theorem
    Classification theorem
    In mathematics, a classification theorem answers the classification problem "What are the objects of a given type, up to some equivalence?". It gives a non-redundant enumeration: each object is equivalent to exactly one class....

    s in mathematics.
  • Film classification (see Motion picture rating system
    Motion picture rating system
    A motion picture rating system is designated to classify films with regard to suitability for audiences in terms of issues such as sex, violence, substance abuse, profanity, impudence or other types of mature content...

  • Civil service
    Civil service
    The term civil service has two distinct meanings:* A branch of governmental service in which individuals are employed on the basis of professional merit as proven by competitive examinations....

     classification, personnel grades in government
  • Attribute-value system
    Attribute-value system
    An attribute-value system is a basic knowledge representation framework comprising a table with columns designating "attributes" and rows designating "objects" An attribute-value system is a basic knowledge representation framework comprising a table with columns designating "attributes" (also...

  • Classification society
    Classification society
    A classification society is a non-governmental organization that establishes and maintains technical standards for the construction and operation of ships and offshore structures...

  • Railway locomotive classification
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