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ISO/IEC 11179, Part 2: Classification Schemes

ISO/IEC 11179, Part 2: Classification Schemes. Jim Carpenter Bureau of Labor Statistics. Metatopia 2001 Conference September 20 – 21, 2001. Agenda. What is a classification scheme? What is a “well-formed” classification scheme? How to register a classification scheme?.

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ISO/IEC 11179, Part 2: Classification Schemes

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  1. ISO/IEC 11179, Part 2: Classification Schemes Jim Carpenter Bureau of Labor Statistics Metatopia 2001 Conference September 20 – 21, 2001

  2. Agenda • What is a classification scheme? • What is a “well-formed” classification scheme? • How to register a classification scheme? Within the context of a ISO 11179 Metadata Registry,answer three questions:

  3. Classification Groups Items to classify

  4. What is a classification scheme? Simplification of the model: Anything with parts that can be related to registered items Thing RegisteredItem Part

  5. Trivial Example • Classification scheme: bag of potato chips • Part: a potato chip • Registered items: data elements in EPA’s registry Clearly, this is slicing a bit thin. More characteristics are needed fora “well-formed classification scheme”

  6. Must be an Information System Artifact • Describes subject domain or other IS artifacts • Data model, org chart, activity diagram, computer program, database, key word list, thesaurus, ontology, … • Has statements that use designations to represent concepts (ISO 704 and 1087)

  7. Additional Characteristics • Consistent with the intensions of the registry • Globally unique identifier • Unique name within each language • Clear application scope (Name Context) • Parts cover the scope of application

  8. Characteristics of Parts • Uniquely identified parts (globally) • Descriptive names • Clear boundaries • Appropriate granularity

  9. Characteristics of Relationships Among Parts • Clear and unambiguous • Are subtypes of • Hierarchy • Generic, or • Partitive • Association

  10. How to Register a Classification Scheme Record a set of attributes • Administrative attributes • Classification scheme attributes • Attributes of each part • Attributes of each relationship between parts.

  11. Administrative Attributes • Globally unique identifier • Many other attributes described in part 3

  12. Classification Scheme Attributes • Name • Language of the Name • Description of subject field (context) • Language of description of subject field • Type of structure

  13. Attributes of the Part • Type of part • Value Attributes of the Part Relationship • Type of relationship

  14. Summary • What is a classification scheme? • A thing with parts that can be related to items • What is a “well-formed” classification scheme? • A classification scheme with characteristics that are useful for good classification • How to register a classification scheme • Record attributes that are useful for sharing

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