CS 502: Computing Methods for Digital Libraries Lecture
CS 502: Computing Methods for Digital Libraries Lecture 18 Descriptive Metadata: Metadata Models 1 Administration
2 Metadata Models Challenge Are there general principles of metadata? Applicable to wide varieties of formats, genres and types. Useful for information discovery, collection management, preservation, e-commerce. Applicable to different creations, versions, etc. Balance cost against utility
3 Perceived Problems with Dublin Core Separate metadata elements for Creator, Contributor, and Publisher. Confusion between Genre and Format. Many qualifiers have been proposed for Date. Apparent redundancy of the element "Source". Reasons for the 1:1 relationship between metadata and an information resource. 4
Creations Work IsRealizedThrough Expression IsEmbodiedIn Manifestation
IsExemplifiedBy Item 5 Agents Work Expression Agent Manifestation Item
IsOwnedBy IsProducedBy IsRealizedBy IsCreatedBy Person or Corporate body 6 Actions
Work Expression Manifestation Item Transforms Actions PlaysRoleIn Agent 7
Actions Originate Compile Excerpt Reformat Use Acquire/relinquish object Acquire/relinquish rights 8
Extras Creations may have relations between each other Actions may have time or place Creations may have subjects 9 Relations References / Is Referenced By to point to other information resources IsBasedOn / IsBasisFor to express intellectual derivation
IsVersionOf / HasVersion to express historical evolution Is Format Of / Has Format to identify transformations of media or layout Is Part of / Has Part to record Part/Whole 10 Relations Is IsMetadataAuthorOf / HasMetadataAuthoredBy to name the creator of the metadata
IsDefinitionOf / IsDefinedBy to point to the URI of the definition of the semantics IsOwnerOf/ IsOwnedBy to name the owner/repository with custody of a physical thing 11 Resolution of Problems with Dublin Core Separate metadata elements for Creator, Contributor, and Publisher. All are Agents related to Works, Expressions, Manifestations or Items.
Confusion between Genre and Format. Both are Form, related to either Work/Expression or Manifestation/Item. Many qualifiers have been proposed for Date. A Work, its Expression, a Manifestation and an Item can each have a particular Date. Apparent redundancy of the element "Source". Source is expressed more clearly as a particular Relation. 12 Unresolved problems 1 Complex objects Indecs view is confused between:
single package of material for e-commerce trails of rights and payments of indefinite complexity Dublin Core view is limited to: document-like objects with simple relationships 13 Unresolved problems 2 Cost No system provides useful guidelines to balance cost of metadata against utility Indecs model of e-commerce requires complex metadata that
is not needed for information discovery and other applications Dublin Core is struggling with the tension between minimalists and structuralists 14 Unresolved problems 3 Documentation and training Both Indecs and Dublin Core will require a detail set of instructions and codes. Despite many years of effort they are a long way from having such guidelines.
In a rapidly changing world, the guidelines will always be out of date. The guidelines will need trained people to understand them. The dream of metadata generated by untrained creators and publishers is far away. 15 Personal Opinion Metadata is valuable only because it enables specific services Information discovery (descriptive) Rendering and display (structural and technical) Commerce (administrative)
Long-term preservation (descriptive, structural and technical) All metadata depends on its context "Author" is: descriptive metadata for information discovery administrative metadata for commerce 16 Personal Opinion Metadata is expensive Costs must be balanced against value for specific services There is no correct place and time to gather metadata At source v. by cataloguer or indexer
By professional v. automatically At time of creation v. when needed 17
Creating your own Cell = City. You are going to create your own real or imaginary city. Each part of your city will correspond to a part of the cell. Look at your worksheet from yesterday. You must include all...
Medieval Mystery / Miracle Plays (1400s-1500s) - Grew out of church skits about biblical narratives - Performed by amateurs, but sometimes touring actors - Performed in churchyards or public areas - Religious themes, but often rough humor or jokes -...
Monday, October 26th and Tuesday, October 27thAmerican Literature. If you have not turned in your self reflection for the literary device presentation, please do so asap so I can put the grade into IC.
David is open and honest but clearly struggles with self esteem issues and on assessment discusses how he has thought about suicide before but never acted on it. He shares he feels he has no place in the world and...
Academic Leadership Program. Faculty Workshops: In conjunction with the Office of Academic Leadership, the Office of Organizational and Human Development, designs workshops which are offered to Department Chairs, Associate Chairs and Associate Deans on specific topics.
Poe was born in America to theatrical parents in 1809; unfortunately, he was orphaned at a very early age. John Allan took young Edgar into his home and became Poe's godfather. In 1815 the Allans, with their now five year...
The New York City Federal Executive Board (NYC FEB) is hosting the New York State Defensive Driver Training Course on June 21, 2018. This course will reduce up to four points from your driving record and reduce the liability, collision,...
Standard PPBE. Delinquent Debt Management. Treasury System Roll-Out. ... System Posting Chart of Accounts to the DoD Chart of Accounts. Posting Logic. ... Standards (data, process and controls) are imperative to unify enterprise systems and processes.
Ready to download the document? Go ahead and hit continue!