1. Work Package 2
All WP Meeting
28th November 2013, Athens
Kai Eckert
co-funded by the European Union

2. Timetable
Q1
• 2.1, 2.3: Test of external components (MINT, Silk, jMet2Ont, D2R), Data Survey
• 2.2: Basic entity structure of the model
Q2
• 2.1, 2.4, 2.5: Prototype of Infrastructure, Workflows, UI
• 2.2: Mapping workshops, further work on the DM2E data model
Q3
• Softwaredesign of Intermediate Architecture, Foundational work
• Combination of the DM2E model with Linked Data principles, Integration with Architecture
Q4
• Provenance Model for DM2E Infrastructure, Web service development
• DM2E Data Model 1.0, first stable and operational version.
Q5
• Implementation of the DM2E Data Model in Mint.
• Development of the Intermediate Version of the Infrastructure: due on July 15th.
Q6
• Implementation of OmNom as final version.
• Further refinements of the DM2E model.
Q7
• Setup of the Silk instance, finalization of OmNom (final version due January 2014).
• Data ingestions (Wittgenstein, ÖNB Codices), data evaluation for contextualisation.
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3. Data Model (Evelyn, Julia, Steffen)
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4. DM2E Model Refinements
• Currently working on Version 1.1:
– dm2e:
<http://onto.dm2e.eu/schemas/dm2e/1.1/> .
– dm2edata: <http://data.dm2e.eu/data/> .
• Model specification
– Revision 0.8
– Updated EDM definitions
• New property
– dm2e:hasAnnotatableVersionAt
• Hierarchies now analogue to EDM
– dcterms:hasPart and dcterms:isPartOf

5. DM2E Model Documentation
Current stable Version: DM2E Model v1.0
• Version 1.0 documentation on dm2e.eu: http://
dm2e.eu/document#DM2EModelSpecification
• Version 1.1 revision history and latest releases on
Redmine
– Revision history
– Model specification
– OWL file

6. Modelling Issue: Uncertainty
• Thoughts on modelling uncertainty:
– https://dm2e.hu-berlin.de/redmine/projects/wp2/ wiki
/DM2E#Uncertainty-in-ontology-modelling
Provider
Representation in DM2E
• Example of the
simple solution:
data
1909-[19--?] edm:TimeSpan
begin:
1909
end:
uncertainBegin:
uncertainEnd: 1999
[18--?]
edm:TimeSpan
begin:
end:
uncertainBegin: 1800
uncertainEnd:
1899
17XX
edm:TimeSpan
begin:
end:
uncertainBegin: 1700
uncertainEnd:
1799

7. Mappings
Mappings of the Polytechnische Journal

8. Consistency Check of the Ontology
• First test using Protege (4.3.0)
– Reasoner (HermiT 1.3.8, FaCT ++)
– discovered some inconsistent inferred axioms
– changed the illogical relations
• Second test using Protege (4.3.0)
– Reasoner (HermiT 1.3.8, FaCT ++)
– included individuals from the UBER mappings
– work in progress

9. First Test - First Example
Inconsistent Inferred Axiom
Explanation:

10. First Test - Second Example
Inconsistent Inferred Axiom
Explanation:

11. Second Test with Individuals

12. Next Steps of UBER in WP2
DM2E model
• Analyse your mappings
– Which resources are not used?
– Are any resources missing?
• Revise the model
– A last time after the mapping analysis
DM2E to EDM
• XSLT from the specialised to the generalised model

13. OmNom (Konstantin, Kai)
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14. The DM2E Data Bridge
This is YOUR data.
This is the void:Dataset
in DM2E.
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15. Some more links are actually available...
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16. Implementation
• Implementation (mostly) completed.
• Currently mainly testing, bug fixes and performance
tuning.
• Final version due: January 2014!
• Optimized visualization as eye candy (compare to
previous slide):
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17. RESTful Linked Data API
• Mostly unchanged since intermediate version.
• Feedback needed from WP3, but also from other
potential users of the data.
• Feature added on request: Data can be marked as
temporary (the default for now). So ingest and play
with it, it won‘t be carved in stone (yet).
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18. Alternative ingestion tool
• Fallback solution: Direct XSLT transformation and ingestion.
• Command line based, no GUI, only basic provenance information
(but complete).
• Why?
– Avoid bottleneck due to ongoing development of OmNom
– performance evaluations.
Available on request. Or provide links to your data files and an XSLT
mapping and we (Dominique, Kai) are happy to ingest for you.
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19. Single Sign On, Security (Jorge)
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20. Authentication Service
●
●
●
●
●
●
●
Centralized Authentication and Authorization Service
Centralized Storage of User Accounts
User Account Schema based on MINT Model.
Single Sign-On
Standard Based: JAAS, Web Services/SOAP
"Remember Me" support
Password reset support

21. Status
• Implementation of WS for Single Sign-on (WS-SSO) (
http://dm2e-security.rz-berlin.mpg.de/josso/).
• Implementation of a User Manager Application
integrated with WS-SSO (
http://dm2e-security.rz-berlin.mpg.de/userManager/).
• OmNom integration.
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22. Contextualisation (Dominique, Klaus)
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23. Status
• Evaluation of provided datasets regarding the
contextualisation.
• Setup of a Silk instance with preloaded
contextualisation targets (GND, LCSH).
• Planned: Geonames, VIAF, Yago, Freebase, DDC, InPho,
JudaicaLink, …
• Directly usable: Dbpedia
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24. JudaicaLink (Dov, Kai)
• Permission to create and publish Linked Data from:
– Russian Jewish Encyclopedia (rujen.ru)
– YIVO Encyclopedia
• UMA hired a student assistant to work with both
encyclopedias and create Linked Data representations.
• More encyclopediae would be great (Contact Dov)
• Further information: JudaicaLink.org
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25. Deployment (Julia)
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26. Berlin Server
• What do we have?
– 2 Processors (Multicore)
– 64 GB RAM
– 4 TB Hard Drive (Usable space might be less, depends on
RAID configuration)
– That‘s all, we won‘t get more!
• UBER and UMA will reinstall the server from scratch.
• Virtual Machines:
– Ontologies, OWLIM, OmNom, Silk, Pundit, Redmine, …
• Downtimes in December, will be announced.
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27. Next steps
• Final Version (January 2014)
–
–
–
–
Complete transformation and ingestion infrastructure
Integrated contextualization
Connection with scholarly environment (WP3)
Documentation Drafts
• Data ingestions(!)
• Maintenance phase
–
–
–
–
Bug fixing and performance tuning in OmNom
Documentation and introductory materials with WP4
Data provision for Europeana
Search and browse interface
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28. Thank you.
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