Classification scheme

From Wikipedia, the free encyclopedia

In metadata a classification scheme is the descriptive information for an arrangement or division of objects into groups based on characteristics which the objects have in common.

The ISO/IEC 11179 metadata registry standard uses classification schemes as a way to classify administered items, such as data elements, in a metadata registry.

Contents

Setting up one or more classification schemes for a collection of objects has many benefits. Some of these include:

  • allows a user to quickly find an object in a large object collection
  • makes it easier to detect duplicate objects
  • conveys semantics (meaning) of an object that is not conveyed by the object name or definition

The following are examples of different classification schemes. This list is in approximate order from informal to more formal:

  • keyword - a list of uncategorised words or phrases associated with an object
  • thesaurus - a list of categorized words or phrases associated with an object
  • taxonomy - a formal list of controlled words arranged from abstract to specific
  • data model - an arrangement of words or phrases that have complex many-to-many relationships
  • network (mathematics) - an arrangement of objects in a random graph
  • ontology - an arrangement of objects in a directed acyclic graph with multiple inheritance

One example of a classification scheme for data elements is a representation term.

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