subjects in the fr family
DESCRIPTION
Subjects in the FR family. Gordon Dunsire Presented at the CC:DA/SAC joint meeting, ALA Annual, 27 June 2011. Overview. Functional Requirements and Resource Description Framework Semantics and inferencing Treatment of “subject” in each FR model Reconciling the models Some open questions. - PowerPoint PPT PresentationTRANSCRIPT
Subjects in the FR family
Gordon DunsirePresented at the CC:DA/SAC joint
meeting, ALA Annual, 27 June 2011
Overview
Functional Requirements and Resource Description Framework
Semantics and inferencingTreatment of “subject” in each FR modelReconciling the modelsSome open questions
FR family history
Functional Requirements for Bibliographic Records (FRBR) published in 1997/8Amended and corrected 2009
Functional Requirements for Authority Date (FRAD) published in 2009
Functional Requirements for Subject Authority Data (FRSAD) published in 2010
FR in RDF
FR models represented in Resource Description Framework (RDF)FRBR Namespace projectRDF is basis of the Semantic Web
Representations made separately for each model to recapitulate historical developmentLearning curve for FRBR Review GroupInforms development of consolidated model
Resource Description FrameworkMetadata expressed as “atomic” statements
A simple, single, irreducible statementThe title of this book is “Treasure island”
Metadata statement constructed in 3 parts: a “triple”Subject of the statement = Subject: This bookNature of the statement = Predicate: has titleValue of the statement = Object: “Treasure island”This book – has title – “Treasure island”
subject – predicate - object
RDF triple
Subject and predicate MUST be machine-identifiableUniform Resource Identifier (URI)
Object MAY be a URI, or a literal“Treasure Island”
Predicate = RDF Property
E-R in RDF
Set of individuals with similar characteristics
Entity Class
PropertyRelationship
Relates one individual to another individual or value
Property domain and range
A property links two specific thingsThe subject and object of a triple using the
propertyThis book – has subject – that topic
A property may be defined to indicate the type (class) of thing that is its subject: Domain
A property may indicate the class that is its object: Range
Domain Label RangeBook has subject Topic
This thing – has subject – that thing
Implies:
Implies:
This thing – is a – Book
That thing – is a – Topic
Book and Topic are classes (types of thing)
Inferencing (1)
Inferencing (2)A sub-class is a sub-type of thingA sub-property is a refinement of a propertyThe domain or range of a sub-property is a
sub-class of the domain or range of the property
Therefore a thing which is of the class of the domain or range of a triple using a sub-property is also of the class of the domain or range of the property
Corporate Body
Manifestation
Person
Expression
Work
Item
Concept
Object
Event
Place
Work
has as subject
has as subject
has as subject
FRBR “Subject” relationships: E-R diagram
Group 1
Group 2
Group 3
[is subject of]
[is subject of]
[is subject of]
FRBR “Subject” relationships: RDF properties
Domain Label RangeWork has as subject (work) WorkWork has as subject (expression) ExpressionWork has as subject (manifestation) ManifestationWork has as subject (item) ItemWork has as subject (person) PersonWork has as subject (corporate body) Corporate BodyWork has as subject (concept) ConceptWork has as subject (object) ObjectWork has as subject (event) EventWork has as subject (place) Place
FRBR “Subject” relationships: RDF inverse properties
Domain Label RangeWork is subject (work) of Work
Expression is subject (expression) of WorkManifestation is subject (manifestation) of Work
Item is subject (item) of WorkPerson is subject (person) of Work
Corporate Body
is subject (corporate body) of Work
Concept is subject (concept) of WorkObject is subject (object) of WorkEvent is subject (event) of WorkPlace is subject (place) of Work
FRAD treatment of subject (1)
New attribute of FRBR Work entitySubject of the work
“The subject aspects of the work and its content.”“Includes information about the subject of the work.
Includes classification numbers.”
New Family entityAdded to the FRBR high-level E-R diagram
Adds subject relationship between Work and Family
FRAD treatment of subject (2)Descriptive relationship
“The relationship between a target work or expression or manifestation or item and a new work that refers to that target as its subject (e.g., criticism, commentary, review, casebook, etc., and the object of that analysis).
This type of relationship is usually expressed in bibliographic data through a subject controlled access point for the target work rather than through authority data.”
FRAD treatment of subject (3)
Controlled access point/Corresponding subject term or classification number relationship“The relationship between the controlled access point
for the name of an entity (for a person, family, corporate body, work, expression, manifestation, item, concept, object, event, place) and a subject term in a controlled vocabulary, and/or a classification number for that entity. Here the subject term and the classification number may also be viewed as parallel names/identifiers for the name of the same entity.”
FRAD “Subject” relationships: RDF properties
Domain Label RangeWork has subject of the workWork has as subject (family) FamilyWork is descriptive work of [Work,
Expression, Manifestation,
Item]Controlled
Access Pointhas corresponding subject term or
classification number[]
Not a “subject of” relationship
FRAD “Subject” relationships: RDF inverse properties
Domain Label RangeFamily is subject (family) of Work[Work,
Expression, Manifestation,
Item]
is descriptive work of Work
FRSAD: E-R diagram
Work
Themahas as subject
Nomenhas appellation
is subject of
is appellation of
FRSAD “Subject” relationships: RDF properties
Domain Label RangeWork has as subject Thema
FRSAD “Subject” relationships: RDF inverse properties
Domain Label RangeThema is subject of Work
ThemaWork
Corporate Body
Manifestation
Person
Expression
Work
Item
Concept
Object
Event
Place
has as subject
has as subject
has as subject
FRBR/FRSAD: E-R diagram
Family
Nomen
has appellation
is appellation of
has as subject
is subject of
frbrer:has as subject (G3)Work G3
frsad:has as subjectWork Thema
frbrer:has as subject (G2)Work G2
frbrer:has as subject (G1)Work G1
frad:is descriptive work ofWork G1
frad:has subject of the workWork
is a sub-property of
Implies:G3 – is a sub-class of – Thema
G2 – is a sub-class of – Thema
G1 – is a sub-class of – Thema
Is Thema a class?
(In a non-trivial sense)Any thing can be a thema (?)Thema has only 2 attributes
TypeScope note
Does this imply that Thema is an equivalent class to Thing (the class of all classes)?
Reconciling Nomen
Nomen is a class of labels?There are many label-type classes in the FR
familyFRAD: Controlled Access Point, Name (of a Person,
etc.)FRBR properties with no range: titles, terms,
designations, etc.Relationship with SKOSXL class Label?
