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[GSIM]
Definition
Object | Group | Definition | Explanatory Text | Synonyms |
Level | Concepts | 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. | A Statistical Classification is a subtype of Node Set. The relationship between Statistical Classification and Level can also be extended to include the other Node Set types - Code List and Category Set. |
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Attributes
| Name | Description | Cardinality | Value Domain |
|---|---|---|---|
| Level number | The number associated with the Level. Levels are numbered consecutively starting with level 1 at the highest (most aggregated) Level. | 0..1 | Textual |
| Level name | The name given to the Level. | 0..1 | Textual |
| Description | Text describing the content and particular purpose of the Level. | 0..1 | Textual |
| Number of items | The number of items (Categories) at the Level. | 0..1 | Textual |
| Code type | Indicates whether the item code at the Level is alphabetical, numerical or alphanumerical. | 0..1 | Textual |
| Code structure | Indicates how the code is constructed of numbers, letters and separators. | 0..1 | Textual |
| Dummy code | Rule for the construction of dummy codes from the codes of the next higher level (used when one or several categories are the same in two consecutive levels). | 0..1 | Textual |
| Items | An ordered list of the Categories (Classification Items) that constitute the Level. | 1..n | Textual |
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