Study report on SMM process 2007. 12. 6 Tae-Hoon Lim and Tae-Sul Seo [email protected] [email protected] ISO/IEC JTC1/SC32 WG2 Interim Meeting Seoul, Korea

Study report on SMM processStudy report on SMM process

2007. 12. 6Tae-Hoon Lim and Tae-Sul Seo

[email protected] [email protected]

ISO/IEC JTC1/SC32 WG2 Interim MeetingSeoul, Korea

2007-12-06 SC32 WG2 Interim Meeting, Seoul, Korea

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Background

According to the resolution of SC32 New York meeting (SC32N1604a), the study on Semantic Harmonization of Metadata was performed.

Reference: SC32N1658


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Summary

Title was changed. The procedures were modified.

Name of each step was changed The 2nd and 3rd steps can be replaced by each other.

A description system for mapping was established.


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Title change

From “semantic harmonization of metadata” To “semantic metadata mapping (SMM)

process”

The later is more specific expression than the former.


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Procedure modification

1st Surveying metadata sets

2nd Constructing common DECs based on 11179

4th Completing crosswalks

3rd Grouping data elements by the DECs

1st Collecting metadata schema

2nd Grouping attributes

4th Mapping into a table

3rd Finding common DECs


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Overall Process

1st Collecting metadata schema

2nd Grouping attributes

4th Mapping into a table

3rd Finding common DECs

The 2nd and 3rd steps can be replaced by each other.

Semantic Metadata Mapping Process


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Survey and identify candidate metadata schema in a domain.

Surveying form includes: Domain name, Service DB name, or an other equivalent name. Number of fields Sample data Value domains

1st. Collecting metadata schema



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Selecting a metadata set as a primary metadata set. The simplest or the highest level metadata set is desirable to be the

primary one.

For all available metadata schema, attributes should be aggregated by the attributes of the primary metadata set.

There may exist attributes which aren’t fitted to any of them. Some attributes, which are not important, may be removed.

The remaining are grouped separately.

Metadata experts should perform the work along with domain experts.

2nd. Grouping attributes



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Analyzing each attribute of the primary metadata set and find out an object class and a property hidden in and related to the attribute.

Constructing common DECs based on ISO/IEC 11179 standard using the object classes and the properties.

If there exists an attribute which isn’t fitted to any of the DECs, a new DEC may be constructed for them.

3rd. Finding common DECs



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Finally, arranging all attributes into a table by the common DECs. Comments on the types of mapping can be included in the table as bell

ow. Same, no difference: no description Level difference: upper/lower terms Domain difference: generic/specific (book, technical report, article, …) Term difference: synonym, antonym or preferred term Naming rule difference: Order or representation rules

A recommended set of metadata can be provided for guiding future standardization.

4th. Mapping into a table



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Domain: e-Book

(1st) Available metadata sets: OpenEBPS, MODS and TEI primary metadata set: OpenEBPS

Application to e-Book

OpenEBPS MODS TEI header

Domain name Description of Electronic Book

Description of Library resources

Encoding methods for machine-readable texts

Number of fields 15 About 60 (top level: 20) Over 20

Sample data yes no yes


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(2nd) Grouping attributes


OpenEBPS MODS TEI

title titleInfor:title fileDesc:titleStmt:title

　 titleInfor:subTitle fileDesc:seriesStmt:title

　 titleInfor:partNumber fileDesc:seriesStmt:idno

　 titleInfor:partName 　

　 titleInfor:nonSort 　

creator(role) name:role 　

creator(file-as) name:namePart fileDesc:titleStmt:author

　 name:displayForm 　

　 name:affiliation 　

　 name:discription 　

subject subject:topic profileDesc:textClass:keyword

　 classification profileDesc:textClass:classCode

　 subject:catographics profileDesc:textClass:catRef

　 subject:occupation 　


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(3rd) Constructing common DECs based on 11179: Object class: e-Book Properties: title, author, subject, abstract, publisher, distri

butor, authority, contributor, publication-date, genre, format, extent, identifier, language, coverage-geographic, coverage-temporal, right, location, edition

DECs: ebookTitle, ebookAuthor, ebookSubject, ebookAbstract, ebookPublisher, ebookDistributor, ebookAuthority, ebookContributor, ebookPublication-date, ebookGenre, ebookFormat, ebookExtent, ebookIdentifier, ebookLanguage, ebookCoverage-geographic, ebookCoverage-temporal, ebookRight, ebookLocation, ebookEdition



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(4th) Mapping into a table


DEC OpenEBPS 　 MODS 　 TEI 　 Recommaned DE

ebookTitle title 　 titleInfo:title 　 titleStmt:title 　 ebookTitle

　　　 titleInfo:subTitle 　 seriesStmt:title T:pre ebookSubtitle

ebookAuthor creator(role) 　 name:role 　　　

　 creator(file-as) T:pre name:namePart D:gen titleStmt:author N:rep ebookAuthorName

ebookSubject subject N:rep subject:topic T:pre textClass:keyword N:rep ebookSubjectWord

　　　 classification N:rep textClass:classCode N:rep ebookSubject-classCode

　　　　　 textClass:catRef T:pre 　

L - up: upper term/lo: lower term

D - generic: gen/…

T - syn: synonym/ant: antonym/pre: preferred term

N - ord: order/rep: representation


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Future plan

The SMM process will be elaborated more in order to be proposed as a new work item in ISO/IEC JTC1/SC32 next year.


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Thank you!

Documents

Study report on SMM process 2007. 12. 6 Tae-Hoon Lim and Tae-Sul Seo [email protected] [email protected] ISO/IEC JTC1/SC32 WG2 Interim Meeting Seoul, Korea