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ISO/IEC JTC1/SC32 WG2 Meeting California, USA. WG2_N1474. ISO/IEC 11179 MDR. DEC. CD. (N:1). (1:N). (1:N). DE. VD. (N:1). MARC. GILS. DC. ONIX. …. Crosswalk. Update for ISO/IEC PDTR 20943-5 Semantic Metadata Mapping Procedure (SMMP). November, 2010 Tae-Sul Seo and Sung-Joon Lim - PowerPoint PPT Presentation
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Update for ISO/IEC PDTR 20943-5Semantic Metadata Mapping Procedure
(SMMP)
November, 2010Tae-Sul Seo and Sung-Joon Lim
[email protected]@kdb.or.kr
1
DEC CD
DE VD(1:N) (1:N)
(N:1)
(N:1)
MARCDC ONIX
GILS…
Crosswalk
ISO/IEC 11179 MDR
ISO/IEC JTC1/SC32 WG2 MeetingCalifornia, USA
WG2_N1474
Contents• Brief history• Comment resolution• Working Draft– Scope– Normative references– Related standards– Semantic Metadata Mapping Procedure : Data Element– Semantic Metadata Mapping Procedure : Value Domain– Annexes
• Annex A.Types of Semantic Heterogeneities• Annex B.Relationship to ISO 11179 MDR
• Future work
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Brief history• 2007-07-19 ~ 2009-06-22/Study Period
– Semantic Harmonization of Metadata
• 2008-11-20/WG2 Resolution– SC32N1812/WG2N1215 Project sub-division was approved.– Semantic Metadata Mapping Procedure (SMMP)– Project Number 1.32.16.01.05.00
• 2009-04-12/Summary of Voting– SC32N1856 Proposed SC32 resolution for sub-division was adopted.
• 2009-06-26/SC32 Resolution Draft– SC32N1887 Registration as PDTR was instructed.
• 2009-11-19~/Update WD– WG2N1317 ISO/IEC PDTR 20943-5– WG2N1392 ISO/IEC PDTR 20943-5– WG2N1416 ISO/IEC PDTR 20943-5
• 2010-11-16/PDTR Ballot Request
3
Comment resolution
• Comments at the last meeting in KunmingProposed change
Enhance the example of value domain mapping
add conceptual domain
Response New table for the example was added Conceptual domain was mentioned on the NOTE
ResolutionMapping Types Examples
Conversion
Code conversion KOR to KR
Letter conversion
KATS to Korea Agency for Technology and Standards
Unit conversion 1USD to 1KRWON
Structural rearrangement
Composition
First Name: JohnGiven Name: Kennedy
to
Name: John Kennedy
Decomposition
Name: John Kennedy
to
First Name: JohnGiven Name: Kennedy
Order change John Kennedy to Kennedy, John
NOTE The conversion or rearrangement of the value is applicable only when the conceptual domains which govern the value domains to be mapped are same. If the conceptual domains are different to each other, value mapping may be performed partially or impossible.
NOTE The conversion or rearrangement of the value is applicable only when the conceptual domains which govern the value domains to be mapped are same. If the conceptual domains are different to each other, value mapping may be performed partially or impossible.
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Scope• Background
– Semantic metadata mapping is required to mediate among data elements to be interoperably used.
– Metadata crosswalk needs to be elaborated to have semantics.
• Purpose– To set up a procedure for improving the semantic
harmonization of metadata.
• Scope– The procedure is recommended for use in a specific domain.– The procedure considers the interoperability of data element
and value domain.
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Normative references
• ISO/IEC 11179-1:2004– Borrowing the fundamental model of data element.
• ISO/IEC 11179-5:2005– Borrowing the principles of naming convention and example in Annex
A. DATA ELEMENT CONCEPT DATA ELEMENT
(1:1)(1:N)
(1:N)
Property
Object Class
(1:1)
(1:N)
Property
Representation
(1:1)
Object Class
CONCEPTUAL DOMAIN
VALUE MEANING PERMISSIBLE VALUESVALUE DOMAIN(1:N) (1:1) (N:1)
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Related standards• ISO 25964-2 WD
– Interoperability with other vocabularies.– ISO 2788:1986 + ISO 5964:1985 = ISO 2596– Types of heterogeneity (Hierarchical and lexical differences) are related.
• ISO/IEC 15944-7 WD– 5.2 Principles and rules for the development of a definition for a concept and
assignment of an appropriate term in a controlled vocabulary– A kind of general rule for the development of term definition
• ISO/IEC 24751-8– Language Accessibility and Human Interface Equivalencies (HIEs) in e-Learning
Applications: Principles, Rules and Metadata Elements– A type of heterogeneity (domain difference) is related.
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Semantic Metadata Mapping Procedure : Data Element
Grouping data elements
1. Identifying metadata element sets to be mapped
2. Finding object classes
3. Grouping data elements by objects
4. Finding properties
5. Grouping data elements by properties
6. Finding data element concepts
7. Mapping by data element concepts
8. Recommending data element names
9. Giving notes about heterogeneity type
Identifying metadata element sets
Semantic Mapping
Main Processes Sub-Processes
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Semantic Metadata Mapping Procedure : Data Element• Premises of the SMMP
– Object class should be same for data element concept mapping.– Data elements are semantically identical if data element concepts are
same. – If data element concept (= object class + property) is same, the data
element is semantically same.
P ROC
POC
OCObject Class
Data Element Concept
Data Element
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Semantic Metadata Mapping Procedure : Value Domain• The value of each data element may be converted or rearranged to solve
the inconsistency of data type as below, when the data types are not equal.
• NOTE The conversion or rearrangement of the value is applicable only when the conceptual domains which govern the value domains to be mapped are same. If the conceptual domains are different to each other, value mapping may be performed partially or impossible.
Conversion Code ConversionLetter ConversionUnit Conversion
Structural Rearrangement CompositionDecompositionOrder Change
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Semantic Metadata Mapping Procedure : Value Domain
Mapping Types Examples
Conversion
Code conversion KOR to KR
Letter conversion KATS to Korea Agency for Technology and Standards
Unit conversion 1USD to 1KRWON
Structural rearrangement
Composition First Name: JohnGiven Name: Kennedy to Name: John Kennedy
Decomposition Name: John Kennedy to First Name: JohnGiven Name: Kennedy
Order change John Kennedy to Kennedy, John
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Annex A.
Types of Semantic Heterogeneities
Same
Domain Difference
Lexical Difference
Syntactic Difference
Complicated Differences
Hierarchical DifferenceGeneralization/Specialization
Composition/Decomposition
1 to 1
X
1 to 1
1 to 1
1 to 1
Synonyms, Abbreviation, Acronyms, Case sensitivity,
Language, Variation
Type Sub-Type Mapping Type
Ordering, Delimiters, Missing
1 to mm to 1
1 to 1
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Annex B.
Relationship to ISO 11179 MDR
Identifying Namespaces
Finding Object Classes
Grouping DEs by Obj. Classes
Finding Properties
Grouping DEs by Properties
Finding DECs
Mapping by DECs
Recommending DEs
Giving Notes
Read only userContextObj. ClassPropertyDECDE
SubmitterObj. ClassPropertyDECDE
ISO/IEC 11179 MDR Metadata Mapping Agent
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Future work• ISO/IEC TR 20943-5 is being reviewed and improved to go
into the next stage.– The WD is completing.
• PDTR ballot is required as soon as possible.– We will update the WD and submit it until March 2011.
• Acknowledgement– We would like to acknowledge and thank the delegates of
Canada, Baba Piprani, for his support and advice in establishing value mapping types. His paper, A Model for Semantic Equivalence Discovery for Harmonizing Master Data, was a good reference of this standard.
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