Transcript Dewey Training Materials FAQ

DDC Update:
Formats, WebDewey 2.0, and Linked Data
Joan S. Mitchell
Editor in Chief, DDC
OCLC
Dewey Translators Meeting
IFLA 2009, Milan
25 August 2009
Changes in the Representation of the DDC
• Adoption of the MARC 21 classification and authority
formats for the representation of the DDC in the new
Editorial Support System (ESS)
• Change in the DDC distribution format from ESS XML to
MARCXML
• Conversion of data format in the Pansoft translation
support software to MARCXML
• Changes in the MARC 21 formats
Changes in the MARC 21 Formats
MARC Proposal No. 2008-01
• Submitted jointly by the Dewey editorial team, Deutsche
Nationalbibliothek (DNB), Library of Congress, and OCLC
• Added to MARC 21 in Update No. 9 (October 2008)
• Implemented by OCLC in WorldCat on 16 August 2009
http://www.oclc.org/support/documentation/worldcat/tb/257/default.htm
Changes in MARC 21 Bibliographic Format:
082, 083, 085
• 082 Dewey Decimal Classification Number (new subfields)
http://www.loc.gov/marc/bibliographic/bd082.html
• 083 Additional Dewey Decimal Classification Number
http://www.loc.gov/marc/bibliographic/bd083.html
• 085 Synthesized Classification Number Components
http://www.loc.gov/marc/bibliographic/bd085.html
082 Dewey Decimal Classification Number
(new subfields)
$m - Standard or optional designation (NR)
a (standard)
b (optional)
$q - Assigning agency (NR)
Used with second indicator 4 (Assigned by agency
other than LC)
082 Dewey Decimal Classification Number
(new subfields): Example
Feehan, Margaret, 1962The serpent’s veil
LCSH: Canadian fiction—20th century
082 00 $a 813.54 $2 22 $m a
082 04 $a C813.54 $2 22 $m b $q CaOONL
083 Additional Dewey Decimal Classification
Number
To be used for Dewey numbers, including
internal and external table numbers, added
for subject access
083 Additional Dewey Decimal Classification
Number: Example
Historic villas of Lake Maggiore
082 00 $a 728.80945165 $2 22
083 04 $a 728.80949478 $2 22
085 Synthesized Classification Number
Components
To show how a built Dewey number has been
built and to specify the component
elements
085 Synthesized Classification Number
Components: Example
Artistic themes in literature
082 04 $8 1 $a 808.80357 $2 22
085 ## $8 1.1 $b 808.80 $a 808.801 $c 808.303 $z 3C $s 357
Collections of literary texts
from more than two literatures
displaying specific features
Artistic themes
WebDewey 2.0 Design Goals
• Modern interface
• Support for search, browse, number building, and
personalization
• Generic user interface script to allow use of more than one
language version and connection to terminology sets
• Local controls (links to terminology sets, display of
hierarchy, connections to OPACs, etc.)
Proposed Welcome Screen
Proposed Advanced Search Screen
Proposed Results Screen with Notes, Terms,
and Work Area
Search
Browse
Add User note
Add Institution Note
Link to OPAC
Main Classes Tables More
Build number
(User created notes)
Relative Index
Mapped Terms
English
LCSH
Help
Dewey Web Services
http://dewey.info
Experimental space for linked DDC data
Initial linked data set: DDC Summaries in 9 languages
Features:
• Classification semantics encoded in SKOS
• Actionable URIs for every DDC class
• Representations for humans (HTML) and machines (RDF)
• The linked data is available under a Creative Commons BY-NCND license (more permissions are available here)
http://dewey.info/class/641/about/
(human-readable version)
http://dewey.info/class/641/about.rdf
(machine-readable version)
http://dewey.info/class/641/about.de