Definition: A Classification Family comprises a number of Statistical classifications, which are related from a certain point of view. The family may be based on a common Concept (e.g. economic activity).

Explanatory notes: Different classification databases may use different types of Classification Families and have different names for the families, as no standard has been agreed upon.

Source: revised Neuchatel

A Classification Family groups Classification Series

Potential relationship to Classification Index to be added

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Definition: A Classification Series is an ensemble of one or several consecutive Statistical Classifications under a particular heading (for example ISIC or ISCO).

Explanatory notes:

Source: revised Neuchatel

Change name

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Definition: A Statistical Classification is a set of categories (Classification Items) which may be assigned to one or more Units in statistical surveys or administrative files, and used in the production and dissemination of statistics.

Explanatory notes: The Classification Items are defined in terms of one or more characteristics of a particular Population of Observation Units. A statistical classification may have a flat, linear structure or may be hierarchically structured, such that all Classification Items at lower levels are sub-groups of the next Level up. The Classification Items at each level of the classification structure must be mutually exclusive and jointly exhaustive of all objects in the target population.

Source: David

 A Classification Series groups Statistical Classifications

A Statistical Classification can be based on a Statistical Classification

A Statistical Classifications has Classification Items

A Statistical Classifications has Levels

A Correspondence Table compares a Statistical Classification

Remove from GSIM model

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Add as attribute of Statistical Classification

Definition: A Statistical Classification has a structure which is composed of one or several Levels. A Level often is associated with a Concept, which defines it. In a hierarchical classification the Classification Items of each Level but the highest are aggregated to the nearest higher level. A linear classification has only one level.

Explanatory notes:

Source: revised GSIM

 A Statistical Classification has Levels

A Level groups a Classification Item

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Definition: A Classification Item represents a Category at a certain Level within a Statistical Classification. It defines the content and the borders of the Category. A Unit can be classified to one and only one item at each level of a Statistical Classification.

Explanatory notes:

Source: revised Neuchatel

 A Statistical Classification has Classification Items

A Map maps to a Classification Item

A Level groups a Classification Item

Definition: An expression of the relation between a Classification Item  in a source Statistical Classification and a corresponding Classification Item in the target Statistical Classification.

Explanatory notes: The map should specify whether the relationship between the two categories is partial or complete

Source: revised GSIM

A Correspondence Table contains a Map

A Map maps to a Classification Item

Definition: A Correspondence Table expresses the relationship between two Statistical Classifications

Explanatory notes: These are typically:  two versions from the same Classification Series; Statistical Classifications from different Classification Series in the same Classification Family; a variant and the version on which it is based; or, different versions of a variant. In the first and last examples, the correspondence table facilitates comparability over time. Correspondence relationships are shown in both directions.

Source: Revised Neuchatel

A Correspondence Table contains a Map

A Correspondence Table compares a Statistical Classification

Classification Index

(the group is still discussing exactly what this object should be - including the exact definition, attributes, explanatory text and relationships)

Definition: A Classification Index is a list of words or text strings (e.g. the name of a locality, an economic activity or an occupational title and task) that refer to Classification Items refer to Classification Items in one or more Statistical Classifications from the same Classification Family.

Explanatory notes: A Classification index shows the relationship between text found in statistical data sources (responses to survey questionnaires, administrative records) and one or more Statistical Classifications.  A Classification index may be used to assign the codes for classification items to  observations in statistical collections. A Classification Index may be presented in alphabetical order of the text, in code order, or searched electronically.

Source: Revised Neuchatel

To Be Confirmed

A Classification Index groups Classification Items

A Classification Index [ something ] a Classification Family