Curves ahead a sunday driver s tour of metadata metasearch and open linking
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Curves Ahead! A Sunday Driver’s Tour of Metadata, Metasearch, and Open Linking. Karen Calhoun Cornell University Library Prepared for the Colby-Bates-Bowdoin Retreat March 18, 2005. Four Easy Lessons. Why you should care about metadata What metadata is

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Curves Ahead! A Sunday Driver’s Tour of Metadata, Metasearch, and Open Linking

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Curves ahead a sunday driver s tour of metadata metasearch and open linking

Curves Ahead! A Sunday Driver’s Tour of Metadata, Metasearch, and Open Linking

Karen Calhoun

Cornell University Library

Prepared for the Colby-Bates-Bowdoin Retreat

March 18, 2005


Four easy lessons

Four Easy Lessons

  • Why you should care about metadata

  • What metadata is

  • Where metadata comes from and how it’s shared

  • Metadata and information discovery systems

Calhoun, Cornell University Library


Curves ahead a sunday driver s tour of metadata metasearch and open linking

1.Why You Should Care:

Strategic Decisions and Actions


A strategy for libraries

A Strategy for Libraries

  • Internal and external pressures

    • External: library user communities have many choices for discovering the info they need

    • Internal: lost opportunities because library staff skill sets lag behind

  • Mandate: Carry forward the library’s role to organize the world’s information

    • Apply this role in the digital age

    • Embrace metadata as a sustainable strategic advantage (the one with the best metadata, wins)

Calhoun, Cornell University Library


Benefits of metadata

Benefits of Metadata

  • Overcomes chaos and infoglut (makes stuff easier to find and manage)

  • Saves time

  • Lowers costs

  • Complements what search engines, lists and directories do

  • Can be shared, reused, and redistributed

Calhoun, Cornell University Library


2 what metadata is

2. What Metadata Is

  • Definitions

  • Evolution: Before and After the Web (B.W. and A.W.)

  • Thematic charts of metadata types and functions

  • Recognizing metadata when you see it

  • Examples: metadata record displays

Calhoun, Cornell University Library


Definitions

Definitions

  • “Data about data” (what?)

  • ALA CC:DA studied 46 definitions!

  • “Structured, encoded data that describe characteristics of information-bearing entities…”

Calhoun, Cornell University Library


A functional definition

A Functional Definition*

  • Helps you find and/or manage information

  • Serves particular purposes

  • Can be used by people or by machines

  • Often has structure and/or content rules

  • Can be created by people or by machines

*With thanks to Tom Turner, former Metadata Librarian,

Mann Library, Cornell University

Calhoun, Cornell University Library


Evolution metadata b w and a w

B.W.

For finding and managing library materials (mostly print)

Catalog records (AACR and MARC)

Shared cooperative cataloging systems

Usually handcrafted, one at a time

Highly structured and content-rich

Expensive

A.W.

For finding and managing many types of materials, for many user communities

Many types of records

Many metadata repositories (most not shared or sharable)

Sometimes handcrafted, sometimes machine-made, sometimes both

Varied structure and content

Can be less or more expensive than library cataloging

Evolution: Metadata B.W. and A.W.

Calhoun, Cornell University Library


Curves ahead a sunday driver s tour of metadata metasearch and open linking

MPEG

ICPSR

VRA

FGDC

MARC, Dublin

Core, TEI

EAD

Describes or

identifies info

resources

Facilitates

managing,

using info

resources

Facilitates

navigation,

retrieval,

display


Recognizing metadata when you see it and when you don t

Recognizing Metadata When You See It (and When You Don’t)

  • Embedded in HTML document

  • Database records

  • Many ways to display metadata records

  • Examples

Calhoun, Cornell University Library


Curves ahead a sunday driver s tour of metadata metasearch and open linking

Calhoun, Cornell University Library


3 where metadata comes from and where it can go

3. Where Metadata Comes From and Where It Can Go

  • Metadata projects

  • Creation and tools

  • Mapping and crosswalks

  • Interoperability

Calhoun, Cornell University Library


Metadata projects a checklist of questions to consider

Who will be using the digital collection, and how?

How large is the digital project? What software and hardware will you use?

What is the role of metadata in the project, and at what point will it be created? What is the workflow?

What is the desired scope and depth of the metadata records?

Who will be creating the metadata, and how? Is there existing metadata?

Is staffing adequate? Can you afford the metadata you want?

What standards will you use or adapt?

Who needs to be involved in decision-making?

How will this metadata be integrated into the library’s other collections, databases or catalogs?

Metadata projects: a checklist of questions to consider

Calhoun, Cornell University Library


Metadata creation and tools

Metadata creation and tools

  • Manual

  • Using templates

    • DC-dot (http://www.ukoln.ac.uk/metadata/dcdot/)

  • Re-using existing metadata

    • Cornell “sleek” records

Calhoun, Cornell University Library


Curves ahead a sunday driver s tour of metadata metasearch and open linking

Manual Metadata

Creation -1-

What do we know about this image?

Bowdoin College baseball team, c. 1896

MMN item number 12388

Brunswick, Cumberland County, Maine

Photographic print

25 x 34 cm

Contributed by Maine Historical Society

Digitized by Maine Memory Network


Curves ahead a sunday driver s tour of metadata metasearch and open linking

Manual Metadata

Creation -2-

What do we know about this image?

Hedge Laboratory – Bates College

Photograph taken circa 1900

MMN item number 7394

Lewiston, Androscoggin County, Maine

Photo transparency

2.25 x 3.5 cm

Contributed by Lewiston Public Library

From Gridley Barrows Collection

Digitized by Maine Memory Network


Manual metadata creation sample questions to discuss

Manual Metadata Creation: Sample questions to discuss

  • What kind of metadata content do you want to be searchable in your system?

  • What is your policy regarding the form of corporate names?

  • What is your policy regarding the formatting of dates?

Calhoun, Cornell University Library


Curves ahead a sunday driver s tour of metadata metasearch and open linking

Automated Generation of Metadata / Reuse of Metadata


Curves ahead a sunday driver s tour of metadata metasearch and open linking

Automated Generation of Metadata: A “Sleek” Catalog Record


Mapping and crosswalks

Mapping and Crosswalks

  • Basis for sharing, reusing, redistributing metadata

  • Basis for integrating multiple metadata types for federated searching (simultaneous searching of multiple collections)

  • Example of a crosswalk: MARC to Dublin Core (http://www.loc.gov/marc/marc2dc.html)

Calhoun, Cornell University Library


Interoperability

Interoperability

  • Defined by CC:DA as:

    • “The ability of two or more systems or components to exchange information and use the exchanged information without special effort on either system.”

Calhoun, Cornell University Library


4 metadata and information discovery systems

4. Metadata and Information Discovery Systems

  • Key problems and issues

  • Next generation library systems

    • ENCompass (Endeavor)

    • MetaLib (Ex Libris)

    • Others

  • Metasearching and open linking under the hood

  • Metadata’s role

Calhoun, Cornell University Library


Key problems and needs

Key Problems and Needs

  • PROBLEMS

    • Countless information resources, little time

    • Searchers on their own to be aware of collections, know how to link, know how to search

  • WE NEED TO HELP USERS QUICKLY AND CONVENIENTLY…

    • Learn what collections are available

    • Learn which collections are relevant to their needs

    • Find the particular parts of collections that meet their needs

Calhoun, Cornell University Library


A next generation library system

A Next Generation Library System

  • Manages metadata diversity

  • Integrates heterogeneous metadata types for searching

  • Provides federated searching of local and remote collections

  • Open linking: Provides seamless linking among related information objects (e.g., a citation and the full text of the article)

Calhoun, Cornell University Library


21 st century cataloging

21st Century Cataloging

Libraries need to combine robust shared cataloging systems with new forms of metadata and with tying multiple forms of metadata into a single system.

Calhoun, Cornell University Library


Federated searching metasearch under the hood

Federated Searching (Metasearch) Under the Hood

  • Web client displays!

  • Metadata “lingua franca”

  • Metadata mappings

  • Descriptive metadata definitions

  • XML data

  • Dinner is served!

  • Mixing bowls, cooking, and serving dishes

  • Recipes

  • Characteristics of ingredients and how they are packaged

  • Raw ingredients


Open linking link resolvers

Open Linking & Link Resolvers

Full Text

Open linking introduces a “resolver”

into the linking process

Link

Source

Link

Resolver

OPAC

Metadata

Link

Link

OpenURL standardizes

this part of the

communication

ILL


Metadata s role

Metadata’s Role

West Quoddy Head Lighthouse

Maine

Calhoun, Cornell University Library


Your turn to work

Your Turn to Work

Calhoun, Cornell University Library


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