Metadata lecture 3, metadata schemes


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  • Starting point is really the “particular purpose”. After reading slide: Do you know of any metadata schemes?
  • Metadata lecture 3, metadata schemes

    1. 1. Richard Sapon-White March 11, 2013
    2. 2. Scheme:A set of metadata elements and the rules for their use that have been defined for a particular purpose 2
    3. 3.  Dublin Core Metadata  Government Element Set (DC) Information Locator Visual Resources Service Profile Association Core  GEM (Gateway to Categories (VRA) Educational Encoded Archival Materials) Description (EAD)  ONIX Data Documentation  Content Standard for Initiative Digital Geospatial Metadata (CSDGM) 3
    4. 4.  Semantics – meanings of metadata elements Content rules – selection and representation of metadata element content Syntax – encoding of elements 4
    5. 5.  AACR2 specifies element names and definitions (e.g., author, other title information, publisher) [semantics] AACR2 also specifies content rules (e.g., selection and representation of author names) ISBD and MARC specify syntax ◦ 245 $a Title : $b other title information / $c author. 5
    6. 6.  Some schemes can accommodate multiple content standards Examples: DC + DACS + LCSH DC + AACR2 + LCSH MARC + AACR2 + MeSH
    7. 7.  Documenting the creation, version, and reuse of information resources Organization and description Validation – documenting the authoritativeness or trustworthiness of the information resource Search and retrieval Utilization and preservation Accessioning and deaccessioning
    8. 8.  Is metadata always digital? ◦ No. Metadata can also exists in paper form. Is metadata always descriptive? ◦ No. Metadata can also record the creation, management, preservation, and history of an information resource. True or False: Metadata for a given information resource can come from many sources. ◦ True.
    9. 9.  True or False: Metadata accrues during the life of a digital object. ◦ True. True or False: Metadata is not data and data is not metadata. ◦ False. “The distinctions between what constitutes data and what constitutes metadata can often be very fluid.”
    10. 10.  Increased accessibility Retention of context Expanding use Learning metadata System development and enhancement Multiversioning Legal issues Preservation and persistence
    11. 11.  High quality descriptive metadata… ◦ Enhances retrieval ◦ Enables searching across multiple collections ◦ Enables creation of virtual collections Especially possible when common elements are present in different metadata schemes Example: OSU’s conversion of EAD/DACS-based finding aids to MARC bibliographic records (M. Elwood Smith papers)
    12. 12.  Metadata can document the relationships that an information resource has with people, places, and things, including other information resources Example: Archival finding aids can indicate other related collections as well as the structure of within a collection, providing context for users
    13. 13.  Provides access to the entire universe of users, wherever they are Enables the manipulation of the information resource for users with special needs, different language skills, etc.
    14. 14.  Specialized forms of metadata can be used to promote learning by students of all ages. Example: http://
    15. 15.  Metadata can document changing uses of systems and content In turn, can use this feedback to make systems development decisions Examples: search log data, download counts, etc.
    16. 16.  A digital object may exist in several forms within a resource, such a images in thumbnail and full-size Metadata enables users and machines to distinguish between the multiple versions of a resource
    17. 17.  Metadata documents: ◦ Licensing ◦ Legal rights ◦ Reproductions ◦ Restrictions on access or use ◦ Privacy concerns
    18. 18.  Technical, descriptive, and preservation metadata ◦ Document how an information resource was:  created,  maintained,  how it relates to other information objects