DDC Update:Formats, WebDewey 2.0, and Linked

Data

DDC Update:Formats, WebDewey 2.0, and Linked

Data

Joan S. MitchellEditor in Chief, DDC

OCLC

Dewey Translators MeetingIFLA 2009, Milan25 August 2009

Changes in the Representation of the DDCChanges 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 FormatsChanges 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

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)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): Example082 Dewey Decimal Classification Number (new subfields): Example

Feehan, Margaret, 1962-

The 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 Number083 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: Example083 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 Components085 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: Example085 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 GoalsWebDewey 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 ScreenProposed Welcome Screen

Proposed Advanced Search ScreenProposed Advanced Search Screen

Proposed Results Screen with Notes, Terms, and Work AreaProposed Results Screen with Notes, Terms, and Work Area

Main Classes Tables More

Build number

Search Browse Add User note Add Institution Note Link to OPACHelp

(User created notes)

Relative Index Mapped Terms

English LCSH

Dewey Web Serviceshttp://dewey.infoDewey Web Serviceshttp://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-NC-ND license (more permissions are available here) 

http://dewey.info/class/641/about/(human-readable version)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.rdf(machine-readable version)

http://dewey.info/class/641/about.dehttp://dewey.info/class/641/about.de