1. 1 Analyzing the Definition of a Classification Scheme In ISO 11179 - Part 2: Classification Jim Carpenter March 26, 2001 Last Update: Wednesday, June 14, 2001

2. 2 Classifications Scheme 3 part definition from ISO/IEC 11179 – Part 3 1)Descriptive information 2)for an arrangement or division of objects into groups 3)based on characteristics, which the objects have in common

3. 3 Classification Scheme Basic attributes 1)the descriptive information Classification_Scheme classification_scheme_item_relationship Classification_Scheme_Item csi_type_name: String csi_value: String membership 0..n 1..n Group type Group name classification_scheme_administered_item: Administration_Record classification_scheme_type_name: String Set of attributes Scheme type Relationship between groups

4. 4 Classification_Scheme Attributes Three Examples classification_ scheme_type_ name classification_scheme_ administered_item/ designation/name csi_type_namecsi_value Keyword ListKeywords for classifying my articles Keywordpolitics TaxonomyTaxatrout Data ModelBusiness model of a grocery store ClassCustomer Example 1: Attribute: Example 2: Example 3:

5. 5 Descriptive information Scheme type –Examples: key word list, taxonomy, model, etc. –Attribute: classification_scheme_type_name Scheme name, definition, and context –Attributes: classification_scheme_administered_item Designation, Definition, Context Documentation of scheme –Attributes: classification_scheme_administered_item Reference_Document Item (group) types, values, and relationships –Attributes: Classification_Scheme_Item csi_type_name, csi_value Classification_Scheme_Item_Relationship

6. 6 Descriptive Information: scheme type, item type, item value, & item relationship

7. 7 Descriptive Information: Definition, designation, context, and reference document

8. 8 Classification Scheme  Purpose is to arrange objects into groups  The objects being classified are “administration records”  The groups are called “classification scheme items” 2)for an arrangement or division of objects into groups

9. 9 Objects to classify Classification Groups

10. 10 Classification Scheme Characteristics …  could be arbitrary  are different than those specified by attributes in the model in part 3 Serves to extend the attribute set of an administrative record 3)based on characteristics, which the objects have in common

11. 11 Attribute Set of An Administration_Record Any path from Administration_Record ending in a class or property is an attribute of the Administration_Record Example: –Slash notation: Administration_Record/reference/Reference_Document/reference_document_title –UML notation: Administration_Record Reference_Document  reference_document_title reference

12. 12 Path Structure Any path in a model can be represented as a reflexive relationship of a class to itself. Thus, any Administration_Record attribute can be represented with this UML diagram: Administration_RecordClass in 11179 Model Relationships in 11179 Model

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