From content standards to RDF Gordon Dunsire Presented at AKM 15, Porec, 2011

Content standards Instructions/rules on creating and maintaining the content of bibliographic metadata (records) Aim to improve consistency, coherency, and completeness of records For resource discovery services Different standards for different domains (archives, libraries, museums) And different contexts and changes over time E.g. International Standard Bibliographic Description (ISBD), Anglo-American Cataloguing Rules (AACR), RDA: resource description and access...

Example: ISBD consolidated edition 2011 The place of publication, production and/or distribution is the name of the place associated on the prescribed source of information with the name of the publisher, producer or distributor. Element Definition Content source Relationship

Example: RDA toolkit 2011 Record the type of carrier used to convey the content of the resource using one or more of the terms listed below Element Definition Content source

Components & framework Element Definition Content source Relationship Domain model Usage guidelines Description set profile Usage (Abstraction) (Machine interpretation) (Human interpretation)

Functional requirements Description set profile Domain model Syntax guidelines and data formats DCMI abstract model DCMI syntax guidelines Metadata vocabularies Community domain models Usage guidelines RDF schema DCMI Singapore framework Local Global Application profile

Application profileRecord structure Elements: Mandatory? Repeatable? Sequence? Aggregation? Everything expressed in Resource Description Framework (RDF) [real soon now: ISBD/DCMI collaboration]

RDF triple Subject : Predicate (property) : Object Metadata content: This book (URI) : Has author (URI) : That author (URI) URI : URI : URI (Linked data!)/Literal (Display) Element semantics: Has author (URI) : Has definition (URI) : Relates …

RDF graph Subject URI Object URI Property1 URI Object literal Property2 URI

Application (profile) semantics: Has title (URI) has minimum occurrence (URI) 1 1 has maximum occurrence (URI) = mandatory, non-repeatable Record content: This book (URI) Museum archives has title (URI) Author1 (URI) has creator (URI) Author2 (URI) has contributor (URI)

Linking data from different domains = linking data from different graphs Author1 (URI)AuthorX (URI) is same as (URI)

Thank you Singapore framework framework/ Guidelines for Dublin Core Application Profiles guidelines/index.shtml