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DDI AND EXPERIENCES AT ICPSR. Prepared for Expert Seminar Finnish Social Science Data Archive Tampere, Finland September 1-2, 2000. Practical Effects of DDI Work. Proposal to enhance user support on ICPSR Website and Other ‘Infrastructural’ Improvements

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Prepared forExpert Seminar

Finnish Social Science Data Archive

Tampere, Finland

September 1-2, 2000

practical effects of ddi work
Practical Effects of DDI Work
  • Proposal to enhance user support on ICPSR Website and Other ‘Infrastructural’ Improvements
  • Funding received from U.S. National Science Foundation for period from September, 1999 through August, 2002
practical effects of ddi work1
Practical Effects of DDI Work
  • Infrastructure Project Goals:
    • Improve the tools on the ICPSR website for the discovery of data
      • preparation of new and extended study-level metadata using DDI standards
      • new Boolean search facility allowing users to construct simple to complex logical relationships among the attributes of each study description
      • new keyword index
      • variable-level searches for portion of the holdings
practical effects of ddi work2
Practical Effects of DDI Work
  • Substantially extend an existing database of bibliographic references to publications
  • Train an existing network of end-user campus support representatives to assist with hard-to-use datasets
    • series of workshops
practical effects of ddi work3
Practical Effects of DDI Work
  • Integrate major data resources outside ICPSR fully into the searchable ICPSR metadata databases
    • extension of existing ‘virtual’ data archive through fully-integrated hyperlinks
practical effects of ddi work4
Practical Effects of DDI Work
  • Improvements in ICPSR Website including:
    • comprehensive site index
    • “shopping cart” facility in which users can batch data to be downloaded
    • context-sensitive help screens
    • development supported by internal resources
practical effects of ddi work5
Practical Effects of DDI Work
  • Conversion of metadata to DDI
    • Mapping between DDI elements and categories included in ICPSR’s metadata records (study descriptions)
    • Goal: develop a conversion routine to tag all of the study descriptions with the appropriate XML tags
    • Longer-term goal: incorporate this process into the initial creation of study descriptions
enhancement of metadata bibliographic citations
Enhancement of Metadata: Bibliographic Citations
  • Systematically investigate full-text databases and do Internet searches
  • Reference other sources, e.g., Eurobarometer list of publications
  • Search older publications and government study reports
  • Search for publications by ICPSR Principal Investigators/contact them directly
enhancement of metadata bibliographic citations1
Enhancement of Metadata: Bibliographic Citations
  • Include new citations in ‘related publications’ field of study and series descriptions
  • Develop permanent contacts with publishers, professional associations to gather new citations more routinely than has been done in the past
enhancement of metadata use of thesaurus
Enhancement of Metadata: Use of Thesaurus
  • General applicability of using thesauri to index ICPSR holdings
  • Advantages and disadvantages of using the HASSET thesaurus developed by the Data Archive at the University of Essex
  • Importance of study descriptions in creating a good index
enhancement of metadata study descriptions
Enhancement of Metadata: Study Descriptions
  • Standardization:
    • Approx. 1/4th of 5000+ descriptions written prior to 1986 and contain a limited number of fields
    • A labor-intensive task: reviewing original records
    • Additional benefit: checking the data as well
future ddi work
Future DDI Work

Proposal (unfunded as yet) for DDI-II:

  • extend use to more complex aggregate and hierarchical datasets and ‘families’ of data sets
  • fuller documentation of electronic surveys
  • better software to markup codebooks
future ddi work1
Future DDI Work
  • facilitate preparation of ‘questionnaires’ in CATI/CAPI surveys
  • achieve interoperability with object-oriented databases of metadata
  • technical workshop for data producers