Often considered too technical and hard to implement Linked Open Data is actually not something outside business and free exchange as usual – it is connectivity, but on a data level.
Global connectivity transformed the way we live and work with one single, yet profound change – it facilitated information sharing, exchange, and retrieval. With the advent of the World Wide Web, myriads of interlinked content revolutionized our knowledge discovery journey. Hyperlink by hyperlink, today we travel across and explore “a large universe of documents“, searching for facts, comparing views, finding insights in ways, 27 years ago we could have hardly ever imagined.
But what about the universe of data unfolding with the speed of light before our eyes? Would ever be data on the Web freely navigated, used and shared the way documents are?
Is it possible that data publishers and consumers transform the Web into a medium for data exchange?
Open data makes the world an amazing place, buzzing with opportunities for innovation and growth. Freely available for anyone to access, use and re-use, these data bring immense transformation to the table: from better-informed people, through more transparent governments to safer and highly-efficient living environments.With the increasing number of big companies, governments and nonprofit organizations who publish data sets openly, the volumes of data available online are soaring.
There are thousands of open datasets available – DBPedia, Geonames, Government Open Data Sources (Data.gov, European Data Portal), Open Data from global organizations (The WHO, UNESCO), corporate datasets (Open Data Institute, OpenOil).
The billions of facts they contain can be used as a source for countless creative business opportunities, based on the relationships these facts exist in.
The growth in online sharing of open data by governments across the world [OKFN-INDEX] [ODB], the increasing online publication of research data encouraged by organizations like the Research Data Alliance [RDA], the harvesting, analysis and online publishing of social media data, crowd-sourcing of information, the increasing presence on the Web of important cultural heritage collections such as at the Bibliothèque nationale de France [BNF] and the sustained growth in the Linked Open Data Cloud [LODC], provide some examples of this growth in the use of Web for publishing data. (cit.Data on the Web Best Practices)
Openness of data impacts every aspect of our lives, fostering the creation of brand new products and services. Open data are enabling innovative tools and applications, to mention just a few:
More and more industries are using Open Data to open up to the potential of public freely shared information. The use of Open Data in Sports Journalism is an example of how Semantic Technology has turned into a magnifying glass for seeing deep connections. Now that Open Data activities and initiatives have gone mainstream (ref. Open Data Barometer), they slowly but steadily disrupt the data management and sharing status quo by bringing more connectivity, transparency, and accountability and thus transforming markets, economies, democracies. And just when it seems that things can’t get more disruptive, Linked Open Data comes into play.
Open Data is powerful but it can become even more powerful if the lack of connectivity and consistent approach to managing these data didn’t bury their enormous potential. As Steven Adler, currently a co-chair of the W3C Data on the Web Best Practices Working Group, puts it:
Briefly, what hinders data interconnectedness and their free exchange at web scale are:
What can transform the exchange between open data publishers and consumers are open data standards and in the best scenario – data being published on the Web using Linked Open Data standards.
Linked Data, as the term suggests, is about creating links between data. W3C open standards like RDF (a generic data model to describe things) and URI (a generic way to identify things) are the building blocks of Linked data principles and make connections between data explicit, with meaning that computers can process.
Linked Data technologies (for more details see Tim-Berners Lee note Linked Data) are unique for they allow us (via our software agents) to travel across diverse data sets, to find, share and integrate information easily and effectively. When the Linked Data paradigm is put in a Web context and meets the Open Data paradigm, the opportunities for data use, reuse and exchange become endless.
Linked Open Data (LOD) is about Linked Data principles applied to publishing freely available data on the Web. The LOD cloud diagram, available at http://lod-cloud.net, shows the datasets that have been published in Linked Data format since 2007 when enterprises and the government started adopting the Linked Data principles, after the concept of Linked Data as infrastructure for Open Data was introduced.
The publicly available data collections that adhere to the Linked Data principles are nearly 600. Among the most richly interconnected are DBpedia (the data version of Wikipedia), GeoNames (a data set with more than 7,500,000 geographical features worldwide), LOV (a set of vocabularies to describe Linked Data).
Although the more data are put on the Web, the richer an information space it would be, not all data have to be open. There are commercial, private and sensitive data that should be protected and exchanged in environments with limited access.Also, as good as the value proposition of Linked Open Data, not all the Open Data across the Web will be linked. But when (and if) it is, it will be the 5-star data that will transform the Web and the way we navigate data.
In 2010 Sir Tim Berners-Lee developed a 5-star rating system for publishing data on the Web. The more open and standards compliant data are, the more stars they get. The inventor of the World Wide Web created this rating encourage data providers to take the first step towards opening their data and ultimately publishing their data according to the Linked Data principles.
★Available on the web (whatever format) but with an open license, to be Open Data
★★ Available as machine-readable structured data (e.g. excel instead of image of a table)
★★★ as (2) plus non-proprietary format (e.g. CSV instead of excel)
★★★★ All the above plus, Use open standards from W3C (RDF and SPARQL) to identify things so that people can point at your stuff
★★★★★ All the above, plus: Link your data to other people’s data to provide context
Cit. Jim Handler, Wither OWL
The social, economic and cultural implications of freely available data are immense. They grow even bigger when Open Data becomes 5-star open data (Linked Open Data). Businesses are increasingly realizing this very influential combination and have started to represent their data in a uniform, standard compliant way.
In this way, enterprises not only enrich and interlink their own data sets of different topical domains but also contribute to an ever growing (in quality and quantity) open data ecosystem. Tasked with the developing a working business integration strategy in a hyperconnected world, enterprises would benefit immensely from getting their data right, that is making the digital representation of their business records speak a universal language.
Linked Open Data standards are such a universal language. Making information easy to integrate and bracing it with excellent interoperability, open data published according to the Linked data principles are a powerful tool for revolutionizing the way business is done, for understanding, analyzing and managing each and every relationship it enters.
Often considered too technical and hard to implement LOD is actually not something outside business and free exchange as usual – it is connectivity but on a data level. Connectivity which allows for effectively manageable and managed data to be shared seamlessly, used and reused freely.
Adding value through connections – as simple as that.Just little pieces loosely joined. As simple as a bag of chips.
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