T. Baker / 27 March 2000 Metadata Grammar: Towards convergence between Dublin Core and RDF Thomas...
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T. Baker / 27 March 2000 Metadata Grammar: Towards convergence between Dublin Core and RDF Thomas Baker <[email protected]> GMD -- German National Research Center for Information Technology 30 March 2000
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Transcript of T. Baker / 27 March 2000 Metadata Grammar: Towards convergence between Dublin Core and RDF Thomas...
T. Baker / 27 March 2000
Metadata Grammar:Towards convergence
between Dublin Core and RDF
Thomas Baker <[email protected]>
GMD -- German National Research Center
for Information Technology30 March 2000
T. Baker / 27 March 2000
Dublin Core (without Qualifiers)
Element
Name
ElementElement Element
Object?
Value
Type Title Date Creator
Document-like Objects (1996)Information Resources (2000)
"T. Mustermann" "Travel report" "Text" "2000-03-07"
HASA
HA
SA
HA
SA
HASA
Objects haveElements(properties).
Elements have Names and Values.
T. Baker / 27 March 2000
Value Encoding Schemes
Element ElementElement Element
Object?
Type Title Date Creator
Resource
"2000-03-07"
HASA
HA
SA
HA
SA
HASA
VES
W3C-DTF
Says that the string "2000-03-07" isformatted according to a W3Cprofile based on ISO8601.
T. Baker / 27 March 2000
Element Refinements
Element ElementElement Element
Object?
Type Title Date Creator
Resource
"2000-03-07"
HASA
HA
SA
HA
SA
HASA
VES
W3C-DTF
ER
Created
Specifies that the Dateassociated with the resourceis the Date Created.
ISA
T. Baker / 27 March 2000
Value Components?
Element ElementElement Element
Object?
Type Title Date Creator
Resource
HASA
HA
SA
HA
SA
HASA
"T. Mustermann"
VC VC
HA
SAHASA
Type
"Person"
Affiliation
"GMD"
Were proposed as a type of Qualifier. Specify that T. Mustermann is a Person whoworks at GMD.
T. Baker / 27 March 2000
No, let's move them to...
Element ElementElement Element
Object?
Type Title Date Creator
Resource
HASA
HA
SA
HA
SA
HASA
"T. Mustermann"
VC VC
HA
SAHASA
Type
"Person"
Affiliation
"GMD"
T. Baker / 27 March 2000
...a People (or Agent) Core Element Set
Element
Name
ElementElement Element
Object?
Value
Type Affiliation Birthdate Name
People-like Objects?
"T. Mustermann" "GMD" "Person" "1947-03-30"
HASA
HA
SA
HA
SA
HASA
T. Baker / 27 March 2000
DCMI sees Elements and Qualifiers
Element ElementElement Element
HASA
HA
SA
HA
SA
HASA
QualifierQualifier
ISA
??
Element RefinementsValue Encoding Schemesare both "Qualifiers"
DCMI has had nogrammatical term forthe high-level "object"
T. Baker / 27 March 2000
RDF sees Resources, Relations, and Classes
Class ResourceResource Resource
Type Date
HASA
HA
SA
ISA HASA
Class
W3C-DTF
Resource
ISA
"Text"
Class
Date Created
Information Resource
Should DCMI redefine Typeas a "Class Refinement"?
Should DCMI definea grammatical entity,"Class"?
