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Metadata at ICPSR Sanda Ionescu, ICPSR. Metadata at ICPSR -Catalog Records- Created by data processors, who fill out a Web-based form: – Fixed fields,

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Presentation on theme: "Metadata at ICPSR Sanda Ionescu, ICPSR. Metadata at ICPSR -Catalog Records- Created by data processors, who fill out a Web-based form: – Fixed fields,"— Presentation transcript:

1 Metadata at ICPSR Sanda Ionescu, ICPSR

2 Metadata at ICPSR -Catalog Records- Created by data processors, who fill out a Web-based form: – Fixed fields, – DDI 2.x and 3.0 compatible

3 Metadata at ICPSR -Catalog Records-

4 Review and approval by metadata specialist Stored in ORACLE database Exported from database to DDI 2.1 XML XML files stored on server (file system) HTML and PDF presentation created dynamically (through XSLT stylesheets) at user request HTML presentation for viewing only; PDF is downloadable

5 Metadata at ICPSR -Catalog Records- DDI-XML files searched by field from home page to retrieve studies (Inktomisearch)

6 Metadata at ICPSR -Codebooks- HERMES – in-house automated process to generate (most of) the study distribution package: – Input: SPSS system or portable Optional pre-formatted (question) text file – Output: Full suite of statistical formats (setups and system) ASCII data file DDI 2.1 file with frequencies and question text if available

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8 Metadata at ICPSR -Codebooks- DDI 2.1 file may be converted to PDF to generate – An “ICPSR” codebook – Part of the publicly distributed codebook as other non-DDI resources may be incorporated In some instances a DDI-based codebook will not be generated

9 Metadata at ICPSR -Codebooks- The DDI 2.1 file with variables description – Is archived – Is downloaded into the Social Science Variables Database (SSVD)

10 Metadata at ICPSR Social Science Variables Database Also built in ORACLE, but currently a separate entity, with links to studies’ and series’ descriptions. Includes variable-level metadata. Is DDI 2.x and 3.0 compliant (input and output) Will enable variable-level searches across studies and series of studies (simple SQL queries - retrieve matches, do not infer relevance)

11 Integrating DDI 3 into Archives SRO-ICPSR collaboration project Common RELATIONAL DATABASE model for data documentation - Compliant with DDI Common RELATIONAL DATABASE model for data documentation - Compliant with DDI Blaise output SAS/SPSS/Stata files DDI 2.x DDI 3.0Other… Client Applications…Web Applications… SRO: ICPSR: ICPSR: Variable-level Search ICPSR projects will be able to use documentation generated by SRO projects…

12 Metadata at ICPSR -Online analysis- Survey Documentation and Analysis (SDA) – Approx. 475 studies – data and documentation in proprietary format (ddl), DDI 2.x-compatible. – Nesstar - used only as a “test” (currently not in production mode) https://www.icpsr.umich.edu/ICPSR/access/sda.html

13 Metadata at ICPSR Other study documentation – Questionnaires – User guides – Data definitions Distributed in machine-readable, but non- searchable formats – PDF, ASCII, Excel, etc.


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