Invited talk at the workshop on Workshop Linked Open Data & Jewish Cultural Heritage, held at Tuesday, 20 January 2015, in Rome, Italy.

1. co-funded by the European Union
JudaicaLink
Linked Data from Jewish Encyclopediae
Dr. Kai Eckert
Data and Web Science Group
University of Mannheim, Germany

2. The DM2E Project
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WP 1
WP 2
WP 3

3. JudaicaLink in the LOD Cloud
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4. "Staff"
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Dov Winer
European Association
of Jewish Culture
Domain Expert
Networking and outreach
Kai Eckert
Data and Web Science
University of Mannheim
Linked Data Expert
Implementation and research

5. Dbpedia inspired
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6. The YIVO Encyclopedia
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7. What data can we find?
• A title
• Describing text
• Links in texts
"Surface form"  Concept
• Pictures
• Description of pictures
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8. More data?
• Subconcept relations
Minsk article links to
"Poland before 1795" calling it
"Polish-Lithuanian Commonwealth".
"Polish-Lithuanian Commonwealth"
is a subsection of "Poland before 1795"
in the main article "Poland".
• So is "Demography"… first level
of subsections seem to work better as
subconcepts, but not very reliable.
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9. How do we get the data?
• https://github.com/kaiec/judaicalink-crawler
• Node.js based crawling scripts written in CoffeeScript:
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10. Access to HTML via jQuery
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11. Intermediate JSON representation
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12. And finally: RDF and Linked Data
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Backlinks
Same As Links
Alternative Labels

13. Encyclopedia on Russian Jewry
• Articles in Russian (about 20.000! Yivo: 2.300)
• No images
• Less links (~ 1.5 per article, Yivo: > 10!)
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14. Upcoming: Das Jüdische Hamburg
• Articles in German (261)
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15. Interlinking
• So far only preliminary links have been created.
• Very simple, label-based approach.
• Exploiting Dbpedia's multilinguality.
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"Minsk" "Минск"
"Минск" @ru
"Minsk" @en

16. What can we do with the data?
• JudaicaLink is an alternative source for authority data:
Persons, Locations, Subjects.
• We are in contact with potential linking partners:
– Europeana,
– the German National Library and
– the National Library of Israel.
• The German National Library started to include data from
third-parties (like JudaicaLink) into the GND.
• Most promising for a successful "match&merge": Persons.
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БЕЛЯВИН Евель Самуилович (1920,
Борисов Минской губ. – 1972,
Минск),
Nathan, Samson Philip
Pädagoge und Rabbiner, geb. 13.1.1820
Hamburg, gest. 31.10.1905 Hamburg
(1754–1800), maskil and
philosopher. Salomon Maimon
(Shelomoh ben Yehoshu‘a) was born
and raised

17. What else, what's next?
• We are looking for funding!
• Generate links from scholarly content to JudaicaLink
(Grant proposal submitted together with JSTOR).
• Generate links with other data resources and between
the encyclopediae (ongoing research).
• And of course: find more encyclopediae or similar
content to generate Linked Data from.
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18. Thank you.
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