subjects in the fr family gordon dunsire presented at the cc:da/sac joint meeting, ala annual, 27...

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 Range

Book 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 Range

Work has as subject (work) Work

Work has as subject (expression) Expression

Work has as subject (manifestation) Manifestation

Work has as subject (item) Item

Work has as subject (person) Person

Work has as subject (corporate body) Corporate Body

Work has as subject (concept) Concept

Work has as subject (object) Object

Work has as subject (event) Event

Work has as subject (place) Place

FRBR “Subject” relationships: RDF inverse properties

Domain Label Range

Work is subject (work) of Work

Expression is subject (expression) of Work

Manifestation is subject (manifestation) of Work

Item is subject (item) of Work

Person is subject (person) of Work

Corporate Body

is subject (corporate body) of Work

Concept is subject (concept) of Work

Object is subject (object) of Work

Event is subject (event) of Work

Place 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 Range

Work has subject of the work

Work has as subject (family) Family

Work is descriptive work of [Work, Expression,

Manifestation, Item]

Controlled Access Point

has corresponding subject term or classification number

[]

Not a “subject of” relationship

FRAD “Subject” relationships: RDF inverse properties

Domain Label Range

Family 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 Range

Work has as subject Thema

FRSAD “Subject” relationships: RDF inverse properties

Domain Label Range

Thema 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?

Thank you

gordon@gordondunsire.comSponsors

ALACataloging & Classification QuarterlyMARCIVE, Inc.