LOD2 Creating Knowledge out of Interlinked Data

The 1st version of the LOD2EU-funded (FP7) research project aiming to take the Web of Linked Data to the next level. Main research challenges: improve coherence and quality of data published on the Web, close the performance gap between relational and RDF data management, establish trust on the Linked Data Web and ... Stack has been published in September 2011 in the form of a LOD2 Stack demo and the downloadable LOD2 Stack virtual machine image – additional details and the instructions on installing the LOD2 Stack from scratch are available in the HOW TO Start document.

The official release date of the LOD2 Stack is: 29.11. 2011 and the official launch will be introduced by a free webinar about the LOD2 Stack at 04.00pm CET that is part of the LOD2 webinar series that will bring several Linked (Open) Data (LOD) tool & service webinars to the interested audience in the next months!

About the LOD2 Stack webinar, 29 Nov 2011

What: Free Webinar: LOD2 Stack – 1st release
Presenter: TenForce, Belgium
When: 29.11. 2011, 04.00pm CET
Information & registration: http://lod2.eventbrite.com

This webinar will introduce the first release of the LOD2 Stack and gives you an overview of the included tools and services as well as it shows concrete use cases that can be managed with the Stack and last but now least it gives a live demo on how to use the LOD2 Stack!

The LOD2 webinar series is powered by the LOD2 project, organised and produced by the Semantic Web Company (Austria).

If you are interested in Linked (Open) Data principles & mechanisms, LOD tools & services and concrete use cases that can be realised using LOD(2) then join the LOD2 webinar series and save the date NOW!!

The LOD2 team is looking forward to meet you at the webinar!

About the LOD2 Stack
The LOD2 stack is an integrated distribution of aligned tools which support the life-cycle of Linked Data from extraction, authoring/creation over enrichment, interlinking, fusing to visualization and maintenance. The stack comprises new and substantially extended existing tools from the LOD2 partners and third parties. The LOD2 stack is organized as a Debian package repository making the tool stack easy to install on any Debian-based system (e.g. Ubuntu). The first release of the LOD2 stack contains the following components (available as Debian packages):

• LOD2 demonstrator, the root package (LOD2)
• Virtuoso, RDF storage and data management platform (Openlink)
• OntoWikiSemantic Wiki providing support for agile, distributed knowledge engineering scenarios. OntoWiki facilitates the visual presentation of a knowledge base as an information map, with different views on instance data. It enables intuitive authoring of semantic content, with an inline editing mode ..., semantic data wiki authoring tool (ULEI)
• SigmaEE, multi-source exploration tool (DERICentre for Science, Engineering and Technology (CSET) established in 2003 with funding from the Science Foundation Ireland. The vision of the Digital Enterprise Research Institute is to be recognised as one of the leading international web science research institutes interlinking technologies, ...)
• D2RD2R Server is a tool for publishing relational databases on the Semantic Web. It enables RDF and HTML browsers to navigate the content of the database, and allows applications to query the database using the SPARQL query language. (, RDF wrapper for SQL databases (FUB)
• SilkThe Silk framework is a tool for discovering relationships between data items within different Linked Data sources. Data publishers can use Silk to set RDF links from their data sources to other data sources on the Web. (, interlinking engine (FUB)
• OREThe ORE (Ontology Repair and Enrichment) tool allows for knowledge engineers to improve an OWL ontology by fixing inconsistencies and making suggestions for adding further axioms to it. (http://ore-tool.net/Projects/ORE), ontology, an ontology is a formal representation of knowledge as a set of concepts within a domain, and the relationships between those concepts. It is used to reason about the entities within that domain, and may be used to describe the domain. In theory, an ontology is a "formal, explicit ... repair and enrichment toolkit (ULEI)

As online services were integrated into the LOD2 Stack: PoolPartyWeb based ontology manager which can serve as a central hub for your knowledge organization. With PoolParty you can organize and maintain knowledge models based on widely accepted specifications like RDF, SPARQL and SKOS. (taxonomyTaxonomy is the practice and science of classification. The word finds its roots in the Greek τάξις, taxis (meaning 'order' or 'arrangement') and νόμος, nomos (meaning 'law' or 'science'). Taxonomy uses taxonomic units, known as taxa. In addition, the word is also used as a count noun: ... manager by SWCG) and Spotlight (annotating texts w.r.t. DBpediaDBpedia is a project aiming to extract structured information from the information created as part of the Wikipedia project. This structured information is then made available on the World Wide Web. DBpedia allows users to query relationships and properties associated with Wikipedia resources, ... by FUB). The LOD2 Stack also makes use of dataset metadata repositories such as thedatahub.org and http://publicdata.eu. A selection of the datasets has been packaged and are available in the LOD2 stack repository.

The LOD2 stack is an open platform for Linked Data components. We are happy to welcome new components. Detailed instructions how to integrate your component into the LOD2 Stack as Debian package are available in the HOWTO Contribute. For assistance or any questions related to the LOD2-stack contact support-stack@lod2.eu. From now on we will regularly release improved and extended versions of the LOD2 Stack. Major releases are expected for Fall 2012 and 2013.

More information about the LOD2 Stack
Demo: http://demo.lod2.eu/lod2demo
Virtual Machine Image: http://stack.lod2.eu/VirtualMachines/
How To Document: lod2-stack.googlecode.com/svn/trunk/documents/HowToStart.pdf

Whats next – the LOD2 webinar series

The LOD2 webinar series offers several (one per month) free webinars about Linked Open Data tools and services around the LOD2 project, the LOD2 Stack and the Linked Open Data Life Cycle, also in the form of 3rd party tools.

The next 2 dates of the LOD2 webinar series are already fixed as follows:

• 20.12. 2011 – Virtuoso (Open Link Software) – information & registration
• 24.01. 2012 – OntoWiki (University of LeipzigThe University of Leipzig, located in Leipzig in the Free State of Saxony, Germany, is one of the oldest universities in the world and the second-oldest university (by consecutive years of existence) in Germany. Famous alumni include Goethe, Wagner, Nietzsche, Angela Merkel and multiple Nobel ..., Germany) – information & registration

About LOD2 – Creating Knowledge out of Interlinked Data

LOD2 is a large-scale integrating project co-funded by the European Commission within the FP7 Information and Communication Technologies Work Programme (Grant Agreement No. 257943). Commencing in September 2010, this 4-year project comprises leading Linked Open Data technology researchers, companiesA company is a form of business organization. In the United States, a company is a corporation—or, less commonly, an association, partnership, or union—that carries on an industrial enterprise. " Generally, a company may be a "corporation, partnership, association, joint-stock ..., and service providers (15 partners) from across 11 European countries (and 1 associated partner from KOREA) and is coordinated by the AKSW research group at the University of Leipzig, Germany.

LOD2 will integrate and syndicate linked data with large-scale, existing applications and showcase the benefits in the three application scenarios of media and publishing, corporate data intranets and eGovernment. The resulting tools, methods and data sets have the potential to change the Web as we know it today.

… it’s the end of the web as we know it … LOD2 - Creating Knowledge out of Interlinked Data!

More information about LOD2
Web: http://lod2.eu
Blog: http://blog.lod2.eu
Slideshare: http://www.slideshare.net/lod2project
Twitter: @lod2project , #lod2
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