dewey summaries as multilingual linked data dewey breakfast/update ala annual july 11, 2009

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Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

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Page 1: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Dewey Summaries as Multilingual Linked DataDewey Summaries as

Multilingual Linked Data

Dewey Breakfast/UpdateALA Annual

July 11, 2009

Page 2: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Linked Data principlesLinked Data principles

• Three rules

1. Use http-URIs as names for things (identification)

2. When someone looks up a URI, provide useful information (dereferenceability)

3. Include links to other URIs (relationships)

• Maxims

• “Raw data now!” (TBL)

• Being able to ask new question about data

• Adding information collaboratively

Page 3: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Linked Open Data cloudLinked Open Data cloud

Page 4: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Requirements for publishing Linked DataRequirements for publishing Linked Data

- Identification

- Every data entity has a URI

- Access

- HTTP as protocol (established infrastructure: WWW)

- User agent indicates which data formats it accepts

- Representation

- for machines

- RDF as data model

- SKOS, Dublin Core, ccREL, etc. as vocabularies

- for humans

- HTML, etc.

- “Openness” of the data set

Page 5: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Use Cases: Basic web lookupUse Cases: Basic web lookup

“If someone has the URI of that thing, what relationships to what other objects is it useful to know about?”(Tim Berners-Lee)

A web page for every class of the Dewey Summaries, e.g.:

<http://dewey.info/class/641/>

Page 6: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Use Cases: Basic linkingUse Cases: Basic linking

Example: Dublin Core metadata

<dc:title>Petrology.</dc:title><dc:creator>Huang, Walter Ta, 1924-</dc:creator><dc:subject xsi:type="http://purl.org/dc/terms/DDC">552</dc:subject>

Use of a link (URI) instead of arbitrary text

Page 7: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Use Cases: Basic linkingUse Cases: Basic linking

Example: Dublin Core metadata

<dc:title>Petrology.</dc:title><dc:creator>Huang, Walter Ta, 1924-</dc:creator><dc:subject rdf:resource="http://dewey.info/class/552/e16/" />

Use of a link (URI) instead of arbitrary text

Page 8: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Service: Dewey Summaries as Linked DataService: Dewey Summaries as Linked Data

- External summaries of DDC 22

- Main Classes, Divisions, Sections

- Accessible

- as RDF data or HTML web pages

- in 9 languages

- Reusable

- by anyone

- under terms of Creative Commons BY-NC-ND 3.0 license

Page 9: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Demo: Dewey Summaries as Linked DataDemo: Dewey Summaries as Linked Data

http://dewey.info/class/641/

http://dewey.info/class/641/about.rdf

http://dewey.info/class/641/about.en

http://dewey.info/class/641/about.sv

http://dewey.info/class/641/2009/06/about.ar.html

http://dewey.info/class/641/2009/01/about.ar.rdf

Page 10: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

HTML view across all versions in all languagesHTML view across all versions in all languages

Page 11: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Data view across all versions in all languagesData view across all versions in all languages

Page 12: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

HTML view of all versions in a specific languageHTML view of all versions in a specific language

http://dewey.info/class/641/about.sv

Page 13: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Data view of a specific version in a specific languageData view of a specific version in a specific language

http://dewey.info/class/641/2009/06/about.ar.rdf

Page 14: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

And it works on my BlackBerry ...And it works on my BlackBerry ...

Page 15: Dewey Summaries as Multilingual Linked Data Dewey Breakfast/Update ALA Annual July 11, 2009

Thank you!Thank you!

What would you like to do with this?

Ideas for new use cases?

Other comments, suggestions?

[email protected]