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Statistical Metadata Extensions to the X3.285 Metamodel

Statistical Metadata Extensions to the X3.285 Metamodel. By Daniel W. Gillman Chairman, NCITS/L8 U.S. Bureau of the Census. Introduction. Context Need Definitions Census Bureau Uses for Statistical Metadata Extensions Conclusion. Context. Metadata “Data about Data”

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Statistical Metadata Extensions to the X3.285 Metamodel

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  1. Statistical Metadata Extensions to the X3.285 Metamodel By Daniel W. Gillman Chairman, NCITS/L8 U.S. Bureau of the Census

  2. Introduction • Context • Need • Definitions • Census Bureau • Uses for Statistical Metadata • Extensions • Conclusion

  3. Context • Metadata • “Data about Data” • “One Person’s Metadata Is Another’s Data” • Context • Statistics

  4. Statistical Data • Microdata • Data about individual objects collected through a survey or experiment. • Macrodata • Data derived through statistical aggregation or other manipulation from microdata or other macrodata.

  5. Statistical Metadata • Descriptive information or documentation that facilitates sharing and understanding statistical data over the lifetime of the data. • Includes • file location, record layout, database schemas, data dictionary, definitions, questions, questionnaires, sample design, processing steps, data quality, etc.

  6. Census Bureau Metadata Objectives • Gain Acceptance of One Logical Metadata Registry Model • Support wide Range of Projects, Surveys, Applications, and Users • Comply with Federal Standards

  7. Purposes of a Statistical Metadata Repository • End-user oriented • Electronic Data Dissemination • Production oriented • Automated Survey Design and Processing

  8. Functions of the CMR • Locate Data Sets • Link Common Data Sets • Locate Information About Data Elements • Locate Documentation • Link Common Documents • Link Images

  9. Repository Model Overview Registration Business Data Documen- tation Data Element Metamodel

  10. Business Data Model Survey Instance Survey Questionnaire Sample Questions Data Sets Universe/Frame Products

  11. Registration Model Common Attributes Administered Component Classification Scheme Objects ...

  12. Documentation Model AdministeredComponent Documentation Type Documentation

  13. Conclusion

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