Over recent years the Linked Open Data paradigm has gained momentum as a lightweight approach of publishing data resources to and reusing data from the web - be it for commercial or commons-oriented purposes.

Free Linked Open Data Consultancy

PUBLINK is the Linked Open Data Consultancy backed by the consortia of the EU-FP7 LOD2 Integrated ProjectIn order to lower the entrance barrier for potential data publishers and tool providers, the LOD2 consortium offer the free PUBLINK Linked Open Data Consultancy to up to 5 selected organizations supporting them with the publishing of Linked Open Data with an overall effort of 10-20 days of support from highly skilled Linked Data professionals.

  • Are you a government or government-related organization (administration, research center, agency, …) and in possession of large amounts of data?
  • Is your organization obliged to publish data?
  • Do you have valuable data but lack the financial or technical means to distribute it?
  • Are you convinced that linking, merging or mapping your data with other data sources will increase its value?
  • Do you face inter-organizational data integration challenges?
  • Do you want or need your data to be re-used?
  • Do you already publish tons of data in HTML, spreadsheets, PDFs or proprietary formats?
If you answered YES! to two or more of these questions, you have to continue reading.

In addition to data publishers, PUBLINK offers this year specific support for Linked Data tool developers, who want to integrate their tool with the Debian-based LOD2 Stack.


the Linked Open Data Starter Service?

  • Is the basis for data integration/mapping/linking on the Internet.
  • Puts you in pole position for data publishing.
  • Empowers the world around you.
  • Is the ultimate extension of your role as knowledge center, regulator, publisher.
  • Guarantees a huge leap forward in your data distribution strategy without any risks.
You will benefit from the technological, juridical, marketing, project and communication experience of the multi-disciplinary LOD2 team to make your first steps into the linked open data space a success.


PUBLINK does for you.

It is a service provided by the EU-supported project LOD2. The ultimate aim of the project is to lift the emerging Web of Data to the next level. Besides research, development and deployment in the areas linked data management, interlinking, enrichment as well as browsing and authoring LOD2 aims to substantially extend the publication and use of Linked Data within and beyond the focus domains of E-Government, Media and Enterprise Data. Through a standardized phased approach it allows you to migrate your data to the Internet in a smooth way at your pace.


PUBLINK Pathfinder

In a one-day workshop the LOD2 team will crawl through your data together with you. You should have your data or samples of it available and a rough idea of what you want to do with it. At the end of the day the LOD2 team will, together with you, have: defined a high-level specification, a plan for next steps, a high-level technical architecture, assessed risks and challenges, identified possible non-technical issues to work on (copyright, privacy, security, …).


PUBLINK Kickstart

In a 5-10-day mini-project the LOD2 team will support you to bring (a) your data to the internet as linked open data, or (b) integrate your tool with the Debian-based LOD2 Stack. Basically, you have the following options:

  • PUBLINK RDF: Linked Data at its core is in fact nothing more than the data published as RDF and then linked to each other.
  • PUBLINK SPARQL endpoint: SPARQL is the query language for RDF data, like SQL for relational data bases.
    To query an RDF Store, a SPARQL endpoint is needed. This is the gateway to the RDF Store through which queries are executed. The web service accepts other formats as well and transforms them into SPARQL.
    The SPARQL endpoint provides a means for machine-to-machine communication so that the public presence of data can be fully exploited, and foresees the needs of future web applications.
    Here are examples of existing SPARQL endpoints:
  • PUBLINK tool: You are developing a tool for Linked Data (or RDF) extraction, publishing, visualization, exploration or consumption? The LOD2 Stack is a integrated set of tools covering the whole life-cycle of Linked Data and we welcome 3rd party contributions. Since the LOD2 Stack is based on the popular Debian software packaging system, tools being integrated with the LOD2 Stack are extremly easy to deploy and use. The main requirement for a tool to become part of the LOD2 Stack is that it produces and/or consumes RDF, which can be obtained or stored in a common SPARQL endpoint (Virtuoso is primarily used in the LOD2 Stack for that purpose). In this variant of PUBLINK we will support you with creating a Debian package of your tool and integating it with other components of the stack (cf. also our HOWTO Contribute).


should apply?

Target organizations for Linked Open Data Starters include (but are not limited to):
  • Government administrations or agencies, regional, national or European
  • Knowledge center (health, infrastructure, chemical, tax, financial, social, economic, biological, education, labour, …)
  • Bureau for statistics
  • Research centers
  • Enterprises aiming to publish Linked Open Data
  • RDF tool developers

Examples of Completed Publink Projects

  • In 2010 the European Commission Directorate General CONNECT learned how to translate a PDF document with performance indicators into a linked open data graphical environment on the web for the Digital Agenda Scoreboard.
  • In 2011 the Statistical Office of Serbia learned how to transform their data into RDF and understood the value of the Datacube standard for statistical information.
  • In 2011 the Food and Agriculture Organization of the United Nations learned how to manage equivalent entities.

And many more organizations have been supported by the LOD2 consortium. Don't you also want to tap into the knowledge, experience and expertise of this dynamic and pragmatic research consortium?


to send an application.

In order to apply for PUBLINK, please send en email with the following information (max. 2 pages) to
  • Brief profile of your organization
  • Description of the data (quality, quantity, current format) or tool (purpose, technology, interfaces) you aim to publish
  • Potential stakeholders benefiting from publishing your data or tool
  • Envisioned involvement from your side – will you designate staff for supporting the PUBLINK project and being responsible for the maintenance of the data when the PUBLINK project will have terminated
  • Envisioned licensing model (in general PUBLINK is aimed at publishing under open licenses, see
After assessment of your application and a possible discussion with you on the value and feasibility of your application, we will select up to five PUBLINK projects for execution.


  • Application deadline:                   January 26, 2014
  • Notification of acceptance:         January 30th, 2014
  • PUBLINK pathfinder period:    February & March 2014
  • PUBLINK kickstart period:          April till June 2014

For successful PUBLINK projects we will, of course, offer individually negotiable options for a continuing collaboration between (members of) the LOD2 consortia and your organization.

What is Linked Open Data?

The Internet previously was merely a virtual library where documents were linked to each other, it was a web of documents for humans to read. The W3C-hosted Linking Open Data initiative (LOD, now extended the ‘web of documents’ with a ‘web of data’ by publishing and interlinking open data sources on the Web based on well-established standards such as RDF and URIs. 


A web comprising linked data in addition to linked documents brings the advantage that the content becomes machine-readable. Computer and software can interpret the meaning of web content instead of just offering it to the user to read. As a result, more intelligent search engines (cf. or Google's knowledge graph) can combine information from different sources, mash-ups integrating heterogeneous information can be more easily built and many more, currently unforeseen creative uses of information on the web become possible.

With more than 30 billion facts already published as Linked Open Data (LOD) the Data Web is not just a vision, but a reality right now. For example, all BBC programming, Wikipedia as a structured knowledge base (DBpedia) and statistical information from Eurostat and the US census are, in addition to hundred of other datasets, readily available on the Web of Data.


LOD2 Testimonials

Dr. Mateja Verlič (Zemanta d.o.o., R&D)

We read a lot about people doing important things, however this time we – LOD2 partners – are the ones changing the history of Web by revolutionizing information use and reuse, contributing to semantic data standards and pushing the limits of almost every WWW-related aspect (sc… read

Dr. Jens Lehmann (Universität Leipzig, Research Group Leader)

The size and number of Semantic Web knowledge bases published as Linked Open Data has been growing tremendously over the past years. The LOD2 project will be a key factor for sustaining this momentum. More importantly, the quality of knowledge bases and the scalability of methods accessing… read

Jindřich Mynarz (University of Economics, Czech Republic)

Apart from being legally open, linked open data is an open technology. Due to its non-exclusive, non-proprietary, well-formalized, and standards-based nature, linked open data supports a wide spectrum of uses. It does not exclude any application from using it and thus it is open to be mixe… read

Dr. Mladen Stanojevic (Institute Mihajlo Pupin, Serbia)

The richness of any semantic model and the usability of represented data is dependent on the links between them. LOD2 is an important step in this direction that will enable an efficient exploration and processing of vast quantity of open data on the Web.


Mun Yong Yi (Korea Advanced Institute of Science and Technology (KAIST))

Data becomes more meaningful and powerful as they are linked and integrated. As I learn more about what LOD can do, I am convinced that it will not only change the future of the Internet but also the quality of human life. I am glad that I am participating in this project, which will defin… read

Orri Erling (OpenLink Software, Virtuoso Program Manager)

Value from information increasingly depends on integration. RDF is a great model for this. LOD2 will make RDF a cost competitive alternative in the database space, without compromising ad hoc flexibility and expressive power. read

Vojtech Svatek (University of Economics, Czech Republic)

As researcher in ontological engineering, I am excited to see LOD2 provide tools that make the generation of semantically structured data easy and thus widespread. I believe that ontological research is deemed to build upon the world views already expressed by means of simpl… read

Andreas Blumauer (Semantic Web Company, CEO)

15 years ago we all were excited when we published HTML for the first time and it didn't take a long time until all of us were "on the internet". Now we are starting to publish data on the web. Based on semantic web technologies professional data management will be possible in distributed … read

Kingsley Idehen (OpenLink Software, CEO)

Three years ago, OpenLink Software enthusiastically contributed the prowess of Virtuoso to the grassroots effort that lead to DBpedia and the Linked Open Data cloud that coalesced around it. Today, we are both honored and enthusiastic about Virtuoso's critical infrastructure role in this n… read

Bastiaan Deblieck (TenForce, Partner and Business Development Manager)

An internet of data opens up tremendous opportunities for our corporate and government customers. We intend to be on the forefront of this evolution. read

Christian Dirschl (Wolters Kluwer, Content Architect)

Linked (Open) Data will change the existing publishing paradigms! Creating high quality content for professional usage will remain an important factor in future publishing, but additional access points and new usage environments will equally define its success. read

Dr. Giovanni Tummarello (National University of Ireland, Galway, Research Unit Leader)

Semantic Markups on the Web could drive information reuse to enable scenarios and applications which we can now only dream of. The idea is extraordinarely compelling, but we know now it won't simply realize itself. The LOD2 project is now a great opportunity for inspired and coordinated re… read

Gregory Grefenstette (Exalead, Chief Science Officer)

Enterpise search is all about providing correct, complete, and appropriate information to the employee and decision maker. LOD2 promises to not only allow internal company information to be linked up to the growing amount of Open Data on the web, but to also provide the mechanisms for val… read

Hugh Williams (OpenLink Software)

It is exciting to see the LOD2 project finally kick off in its quest to take the Linked Open Data cloud to the next level of scalability, performance and integration for the exploitation of the Web as a viable platform for enterprise level data and information integration. read

Martin Kaltenböck (Semantic Web Company, CFO)

Linked (Open) Data technologies offer a new way of data integration for the enterprise! Smooth interoperability between internal data sets can reduce costs as well as the enrichment of these data sets by external data can support new market intelligence paradigms for a better decision making. read

Dr. Peter Boncz (Centrum Wiskunde & Informatica)

The publishing of ever more datasets by e.g. governments adds value for many key applications including business intelligence, which will drive the Linked Open Data (LOD) paradigm going forward. In the LOD2 project, CWI is working to increase the scalability and performance of querying int… read

Dr. Sören Auer (Universität Leipzig, LOD2 coordinator)

The Linked Data paradigm is a simple and efficient way for integration of heterogeneous information on the Web. Ultimately, we will, for example, be able to search for a new appartment and a close-by available spot in child care in one go. read

Tassilo Pellegrini (Semantic Web Company, R&D)

Semantic interoperability changes the technological and economic nature of metadata opening up exciting opportunities for value creation in various comercial and non-commercial areas. Linked Data is the blueprint for this new ecosystem and it will change the way we think about and use the web today. read

Wouter Dewanckel (TenForce, WP Project Leader)

It is an honor to take part in this challenging integration project to create solutions that can generate business value out of emerging technologies. read