LOD2 Plenary Vienna 2012: WP6 - Interfaces, Integration & LOD2 Stack

EU-FP7 LOD2 WP10 – 22.-23.9.2011. 02.09.2010 . Page 1

http://lod2.eu

Creating Knowledge out of Interlinked Data

http://lod2.eu

WP6 – Interfaces, Integration & LOD2 Stack

Plenary Meeting Vienna 21-23 march 2012 Bert Van Nuffelen (Tenforce)

Collaborative Project 2010-2014in Information and Communication Technologies

Project No. 257943Start Date 01/09/2010

EU-FP7 LOD2 WP6 – 21.-23.3.2012. Page 2 http://lod2.eu


Linked Data Publishing

Inter-linking/ Fusing

Classifi-cation/

Enrichment

Quality Analysis

Evolution / Repair

Search/ Browsing/ Exploratio

n

Extraction

Storage/ Querying

Manual revision/ authoring



Linked Data Publishing Pre LOD2


Classifi-cation/

Enrichment

Quality Analysis

Evolution / Repair


n

Extraction

Storage/ Querying


Virtuoso

OntoWiki

sindice

D2R

DLlearner

SILK



Linked Data Publishing after LOD2


Classifi-cation/

Enrichment

Quality Analysis

Evolution / Repair


n

Extraction

Storage/ Querying


Virtuoso

OntoWiki

sindice

D2RDLlearner

SILK



1. Improve the overall software support for Linked Data publication.2. Support deployment Linked Data components3. Improve information sharing between Linked Data components so that

publishing Linked Data is eased.4. Improve access to the content: the online Linked Open Data.

Integration Objectives



• WP6 consists of 4 tasks- T6.1: Integration of User Interfaces- T6.2: Integration of LOD2 stack API Components- T6.3: Testing, Documentation & Tutorials- T6.4: Development of application scenarios and testing the LOD2 stack

configurator

WP6 Achieving Integration Objectives

WP1(sep ‘10-’11)

WP6(sep ‘11 – ‘12)

WP6(sep ‘12-’13)

WP6(sep ‘13-’14)

LOD2 stack 1

released

LOD2 stack 2

released

LOD2 stack Final

released



• Page 2: Something that requires particular attention during the second year is how the different technologies developed in the project complement one another to address the current limitations of the LOD web.

• Page 3: How do the developments in Virtuoso, taking place in this project, address these problems? And how will those developments allow SILK or SIG.MA, for instance,to work better?

• The SOA and the requirements analysis do not cover some issues related to querying multiple datasets in combination. An example for such question could be: Do people want to be able to do queries like the following one:

SELECT ?band ?location WHERE { ?band music-ont:similar_to dbpedia:Dire_Straits; dbp-ont:hometown ?location . ?location geo-ont:parentFeature dbpedia:Germany. }

If it was possible to define and evaluate such queries efficiently, can one expect LOD data to be used more widely? Note that such query requires owl:sameAs semantics to be applied to aggregate data from MusicBrainz, DBPedia and Geonames and the transitivity of location nesting relation of Geonames to be enforced.

Some year 1 review comments



Maintenance of the LOD2 stack• Improving existing tools• Adding new tools• Infrastructure management (repository, online demo, ...)• Improving lod2 demonstrator

Dissimination of the LOD2 stack• LOD2 stack Webinars• Wiki.lod2.eu: documentation wiki• Stack.lod2.eu / lod2.eu website• Integrating new LOD2 partners• Legal aspects => IPR document

Testing activities• Automatic test (test.stack.lod2.eu)• Application scenarios study • Overview of testing activities for each components• Overview of hardware requirements

WP6: past 6M – Core work



Shared user interfaces• Shared graph management• Shared prefix management• Shared vocabulary management• Goal: create webapi’s that support these functionalities & have them used by some

tools

Shared Authentication• WebID has been chosen as authentication mechanism for the LOD2 stack• Goal: a single sign on mechanism for all Tomcat based components

Shared Provenance• First meetings just past• Goal: a vision document to be elaborated Y3

WP6: Past 6M: Integration work



Intermediate release 1.1 of the LOD2 stack: 12 march 2012

• New tools: • Limes & colanut• Valiant• Semantic Spatial browser

• Upgraded tools (w.r.t. sept. 2011)• Virtuoso• Ontowiki• Silk

• Documentation & IPR document

WP6: an intermediate milestone achieved



Maintenance of the LOD2 stack• Standarize on Ubuntu 12.04 LTS for the next 2,5 years• Smooth release management => ensuring that all is right => Quality enhancement • Many new tools are get available• Smooth searching and publishing in CKAN repositories

Dissimination of the LOD2 stack• Webinars continue

Testing activities• Multi stage repository• test server activation• First evaluation w.r.t. Application scenarios

WP6: Core: next 6M



Year 2 finalisation• Planning alignment• Deliverable documents description

Integration (Do we work towards answering the right questions?) • When does a component is a true member of the LOD2 stack?• Demonstrator vs Configurator• Intercomponent feedback loops• Shared user interface experience• Authentication & provenance (only feedback probably)

Application scenarios & evaluating the LOD2 stackCollaboration with other EU projects: e.g. LarkC

WP6 breakout discussion topics



Layered Architecture View



Functional View Of Abstract application

EU-FP7 LOD2 WP10 – 22.-23.9.2011. 02.09.2010 . Page 15

http://lod2.eu


LOD2 Project: http://lod2.eu

LOD2 OGD StakeholderSurvey: http://survey.lod2.eu

LOD2 Stack: http://stack.lod2.eu

Bert Van NuffelenWeb: http://www.tenforce.com

Mail: [email protected] Phone:+32 479 06 24 26

http://lod2.eu/

http://survey.lod2.eu/

http://survey.lod2.eu/

http://stack.lod2.eu/

mailto:[email protected]

Technology

LOD2 Plenary Vienna 2012: WP6 - Interfaces, Integration & LOD2 Stack