ISO/IEC 21000-3:2003/Amd 2:2013
(Amendment)Information technology — Multimedia framework (MPEG-21) — Part 3: Digital Item Identification — Amendment 2: Digital item semantic relationships
Information technology — Multimedia framework (MPEG-21) — Part 3: Digital Item Identification — Amendment 2: Digital item semantic relationships
Technologies de l'information — Cadre multimédia (MPEG-21) — Partie 3: Identification des éléments numériques — Amendement 2: Relations sémantiques des éléments numériques
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 21000-3
First edition
2003-04-01
AMENDMENT 2
2013-07-15
Information technology — Multimedia
framework (MPEG-21)
Part 3:
Digital Item Identification
AMENDMENT 2: Digital item semantic
relationships
Technologies de l'information — Cadre multimédia (MPEG-21)
Partie 3: Identification des éléments numériques
AMENDEMENT 2: Relations sémantiques des éléments numériques
Reference number
ISO/IEC 21000-3:2003/Amd.2:2013(E)
©
ISO/IEC 2013
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ISO/IEC 21000-3:2003/Amd.2:2013(E)
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ISO/IEC 21000-3:2003/Amd.2:2013(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 2 to ISO/IEC 21000-3:2003 was prepared by Joint Technical Committee ISO/IEC JTC 1,
Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia
information.
This Amendment provides MPEG-21 DII with the ability to explicitly and unambiguously describe existing
relationships between different MPEG-21 Digital Items. It also conveys the base inter-DI relationship
taxonomy in the form of an RDF/OWL ontology.
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ISO/IEC 21000-3:2003/Amd.2:2013(E)
Information technology — Multimedia framework (MPEG-21)
Part 3:
Digital Item Identification
AMENDMENT 2: Digital item semantic relationships
In Clause 1 insert a new bullet containing the following text:
How to express the relationship between two Digital Items
In 3.1, insert the definition for the term “Inter-DI Relationship” as follows:
Inter-DI Relationship
any form of logical connection or association between two Digital Items, pertaining to the semantics of the role
that one DI plays towards another DI
Move 4.3 and all following 4.x one point up (for instance, 4.3 becomes 4.4, etc).
After 4.2, insert 4.3:
4.3 Relationships Element
The Relationships element is intended to enable the description of one, or more, relationships between
properly identified Digital Items. Each such relationship logically connects two DIs (referring them through their
DII identifiers), to each other through a specific, directional logical connection of the subject-predicate-object
type. One of the DIs plays the role of the subject, the other DI plays the role of the object and the relationship
itself plays the role of the logical predicate that relates subject to object.
One example of such a relationship is that which exists between a “Book DI” and its corresponding “Errata DI”.
The “Errata DI” is the subject in a “correction” relationship (or predicate) where the “Book DI” is the object.
4.3.1 Syntax
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax- ns#"
ref="rdf:RDF" minOccurs="1" maxOccurs="1"/>
A Relationship element has to appear as a child of a Statement element (defined in MPEG-21 DID on
ISO/IEC 21000-2).
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ISO/IEC 21000-3:2003/Amd.2:2013(E)
4.3.2 Semantics
The Relationships element allows the semantically precise definition of any number of inter-DI
relationships. Together, these relationships form the relational context of the Digital Item that this information
is associated to.
The content of the Relationships element is RDF/OWL metadata, which performs the actual description of
inter-DI relationships.
To be in accordance with this clause, this metadata must conform to a universal (MPEG-21 wide) ontology,
termed, MPEG-21 Core Ontology for DI Relationships (MPEG-21 CODIR), defined in 4.3.3.
4.3.3 MPEG-21 Core Ontology for DI Relationships
]>
xml:base="mpeg21:corerelationalontology"
xmlns:owl2xml="http://www.w3.org/2006/12/owl2-xml#"
xmlns:mpeg21coreRelOnt="mpeg21:corerelationalontology"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:owl="http://www.w3.org/2002/07/owl#">
The MPEG-21 Core Ontology for DI Relationships (textually presented above and graphically
depicted in Figure AMD2.1) only defines the fundamental taxonomy of possible inter-DI relationships. It may
and should be extended by other domain-specific ontologies, which will add the taxonomic definition for their
domain specific inter-DI relationships.
Figure AMD2.1 — MPEG-21 CODIR’s Graphical Depiction
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ISO/IEC 21000-3:2003/Amd.2:2013(E)
In 4.4, replace the existing schema definition with the following:
xmlns="urn:mpeg:mpeg21:2002:01-DII-NS"
targetNamespace="urn:mpeg:mpeg21:2002:01-DII-NS"
version="0.02">
ISO/IEC 21000-3 Relationships Element
################################################ -->
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
ref="rdf:RDF" minOccurs="1" maxOccurs="1"/>
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ISO/IEC 21000-3:2003/Amd.2:2013(E)
Add a new informative Annex E between current Annexes D and E as follows. Renumber Annex E as Annex F
and change all references accordingly:
Annex E
(informative)
Relationships Element Employment Example
E.1 Overview
The present Annex provides an example of a typical employment of the Relationships element, and
associated provisions.
E.2 presents a sample ontology which extends the CODIR ontology and E.3 depicts the expression of a DI’s
relational context through the employment of the defined sample ontology and the Relationships element.
E.2 Sample Extending Ontology
The core taxonomy of inter-DI relationships defined in MPEG-21 CODIR may be extended to support any set
of relationships. Figure E.1 depicts an ontology defining such a possible set.
Figure E.1 — Relationship Ontology extending MPEG-21 CODIR
Within the ontology presented in Figure E.1, the interDIRelationship property, from MPEG-21 CODIR,
is extended by three base types of inter-DI relationships, each of which further contains a number of
relatio
...
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