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Metadata, Schmetadata Tell Me Why I Should Care

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Adapt that standard and document it. OLC Spring Chapter Conferences 2004. mmaurer_at_lms.kent.edu ... Example of metadata that can either be non-connected or embedded ... – PowerPoint PPT presentation

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Title: Metadata, Schmetadata Tell Me Why I Should Care


1
  • Metadata, Schmetadata Tell Me Why I Should
    Care?
  • OLC Spring Chapter Conferences, 2004
  • Margaret Maurer
  • Assistant Professor, Cataloging Manager
  • Kent State University Libraries and Media Services

2
Useful Resources
  • Metadata Fundamentals for All Librarians /
    Priscilla Caplan. ALA, 2003. 0-8389-0847-0
  • Introduction to Metadata, Pathways to Digital
    Information / Edited by Murtha Baca. Getty
    Information Institute, 1998. 0-89236-533-1

3
What is Metadata?
  • Data about data
  • Machine understandable information for the web
  • Data that describes the attributes of a resource,
    e.g. its author(s), title, physical format, etc.
  • A succinct and systematic set of information that
    references, and can be used to retrieve
    efficiently and accurately, a larger set of
    information.

4
Metadata
  • Cataloging is metadata, metadata is cataloging
  • Metadata can be information stored in ltmetagt tags
    in the headers for HTML pages
  • Library catalogs are metadata

5
2003 OCLC Environmental Scan
  • Trends In the Technology Landscape
  • Bringing structure to unstructured data
  • Distributed, component-based software
  • A move to open-source software
  • Security, authentication and digital rights
    management

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7
Existing Metadata in Public Libraries
  • Traditional Library Information Systems
  • Community Information
  • Directories of agencies and services
  • Volunteer opportunities listings
  • Events
  • Local historical and genealogical information

8
Traditional Library Metadata
  • Collection catalogue
  • Indexing services (magazines and newspapers)
  • MARC centric services
  • Purchased content and data management services

9
Local Historical and Genealogical Information
  • Newspaper clippings stored in a digital images
    database
  • Indexes of non-digitized material
  • Census, wills, property records, military
    records, cemetery records, business directories,
    maps

10
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11
Digitization Projects in Ohio Libraries
  • Digitization projects use metadata to describe
    images
  • 47 of survey respondents were in some phase of a
    digitization project in Ohio in 2001

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15
Creating your own metadata
  • Define what the resources are
  • Describe who will want to access them and how
  • Determine what standards exist to describe that
    type of resource
  • Adapt that standard and document it

16
Entity
  • An object or thing about which information needs
    to be known or held. The resource being
    cataloged.

17
Metadata Element
  • A discrete unit of data about a resource.
  • Elements may be further qualified.
  • 15 Dublin Core elements
  • In MARC, each field is an element.

18
Attribute
  • A category of information about an element or
    entity.
  • Used to identify, qualify, classify or quantify
    the element or entity.
  • A list of attributes is defined for each Dublin
    Core element in a particular application file.

19
Metadata Scheme
  • A scheme that helps interpret element values.
  • Examples can include parsing rules, controlled
    vocabularies, or AACR rules or MARC21
  • A defined list of elements rules for entering
    data

20
Not one size fits all
  • No universal metadata type
  • Coordination is tighter at the top than where
    metadata is being designed

21
Metadata Schemes Define
  • Semantics The meaning of the metadata elements
    themselves
  • Content Rules
  • Syntax
  • Context
  • Management

22
Types of Metadata
  • Descriptive metadata resource discovery
  • Administrative metadata management of resources
  • Structural metadata machine necessary
    information

23
Descriptive metadata
  • Aids in resource discovery
  • MARC / AACR
  • Dublin Core
  • TEI (Text Encoding Initiative)

24
Administrative metadata
  • Facilitates the management of the resource
  • Controls access to the resource
  • Grants Permissions for use
  • Rights management

25
Structural metadata
  • Used by machines
  • Seldom seen by the human eye

26
DC Metadata Application Profiles
  • Application profiles
  • Formalized definitions
  • Identifies controlled vocabularies (if any)
  • Human readable information about the application
    and usage guidance

27
  • Western States Dublin Core Metadata Best
    Practices
  • OhioLINK Draft Guidelines for Digital Media
    Center Metadata

28
Metadata crosswalks
  • Based on datamapping
  • Aid interoperability
  • Authoritative mappings
  • Generally round-trip mapping is not supported
    without data distortion or loss

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31
Structures for Metadata
  • Non-connected metadata (databases)
  • Embedded metadata

32
Text Encoding Initiative (TEI) Headers
  • Coding for electronic texts
  • Example of embedded metadata
  • Closely related to ISBD

33
Dublin Core Metadata Initiative
  • Example of metadata that can either be
    non-connected or embedded
  • General purpose scheme for resource description
  • 15 elements
  • Can be qualified

34
Dublin Core (Continued)
  • Internationally accepted
  • Flexible
  • Interoperability
  • Too few elements and qualifiers
  • Lack of usage guidelines

35
Dublin Cores Purpose and Goals
  • To assist in and enhance resource discovery and
    description on the web.
  • To achieve semantic interoperability
  • To be recognized as an international standard.

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38
Metadata and searching embedded ltmetagt tags
  • The internet is rife with data, but poor in
    metadata
  • Effective searching requires the ability to find
    what you are looking for and the ability to use
    what you find.

39
Metadata and searching within a domain
  • Search engines that index ltmetagt elements
  • Ultraseek
  • Berkeleys Swish-E
  • Microsofts Index Server
  • Blue Angel Technologies
  • MetaStar
  • Verity
  • Livelink Search and Spider

40
The good and the bad of Interoperability
  • Lack of a standard format
  • Open Archives Initiative (OAI)

41
So, Whats next?
  • Indexing Cataloging are needed
  • Its our job
  • Librarians as tool makers
  • Volunteer!

42
  • http//www.library.kent.edu/mmaurer/
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