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What is Linked Data?
What is Linked Data?
Published: 2012/06/16
Channel: Manu Sporny
Tim Berners-Lee: The next Web of open, linked data
Tim Berners-Lee: The next Web of open, linked data
Published: 2009/03/13
Channel: TED
The Next Evolution of Data (Linked Data) & Understanding The Types of Big Data!
The Next Evolution of Data (Linked Data) & Understanding The Types of Big Data!
Published: 2017/08/17
Channel: Singularity Prosperity
Linked Open Data - What is it?
Linked Open Data - What is it?
Published: 2012/02/28
Channel: EuropeanaEU
Linked Data for Libraries
Linked Data for Libraries
Published: 2012/08/09
Channel: OCLCVideo
Build a Small Knowledge Graph Part 1 of 3: Creating and Processing Linked Data
Build a Small Knowledge Graph Part 1 of 3: Creating and Processing Linked Data
Published: 2014/06/25
Channel: Google Developers
Web 3.0, Linked Data, and the Semantic Web: What
Web 3.0, Linked Data, and the Semantic Web: What's this all about?
Published: 2016/09/06
Channel: Microsoft Research
Why Linked Data?
Why Linked Data?
Published: 2013/08/05
Channel: Ordnance Survey
Jargon Free Linked Data
Jargon Free Linked Data
Published: 2013/06/17
Channel: David Wood
Linked Data Success Story
Linked Data Success Story
Published: 2012/11/21
Channel: David Wood
Alexander O´Connor: Linked Data and the Semantic Web - Making Human Knowledge Programmable
Alexander O´Connor: Linked Data and the Semantic Web - Making Human Knowledge Programmable
Published: 2015/06/15
Channel: Universität Göttingen
The Impact of Linked Data in Digital Curation and Application to the Cataloguer
The Impact of Linked Data in Digital Curation and Application to the Cataloguer's Workflow
Published: 2015/10/08
Channel: accesslibcon
KOMMA: Modeling with RDF and linked data
KOMMA: Modeling with RDF and linked data
Published: 2016/11/24
Channel: Eclipse Foundation
2017-MAY-12 :: Leveraging Linked Data: Semantic Web Technologies Applied to ACS Data
2017-MAY-12 :: Leveraging Linked Data: Semantic Web Technologies Applied to ACS Data
Published: 2017/08/16
Channel: datadotworld
Linked Data: Real World Implementation Case Study
Linked Data: Real World Implementation Case Study
Published: 2014/10/02
Channel: ProgrammableWeb
Semantic Web Tutorial 14/14: Linked Data
Semantic Web Tutorial 14/14: Linked Data
Published: 2014/03/16
Channel: Noureddin Sadawi
MOOC Semantic Web and Linked Data: Course presentation
MOOC Semantic Web and Linked Data: Course presentation
Published: 2017/05/16
Channel: UPM
The World of Linked Open Data
The World of Linked Open Data
Published: 2015/11/10
Channel: NetworkedPlanet
Neo4j Online Meetup #2: Graph Databases, RDF, and linked data
Neo4j Online Meetup #2: Graph Databases, RDF, and linked data
Published: 2017/03/02
Channel: Neo4j
Designing with Linked Data
Designing with Linked Data
Published: 2016/09/28
Channel: UXLx - User Experience Lisbon
Big Data: R and Linked Data Streams
Big Data: R and Linked Data Streams
Published: 2009/05/03
Channel: O'Reilly
LOD Laundromat - Best Linked Open Data Application 2015
LOD Laundromat - Best Linked Open Data Application 2015
Published: 2015/10/05
Channel: Stichting Geonovum
Linked Data Harvesting - PoolParty Tutorial #20
Linked Data Harvesting - PoolParty Tutorial #20
Published: 2013/08/30
Channel: PoolParty Semantic Suite
Linked Data (and the Web of Data)
Linked Data (and the Web of Data)
Published: 2010/10/28
Channel: DERIGalway
Linked Data for Libraries, Archives and Museums
Linked Data for Libraries, Archives and Museums
Published: 2014/06/19
Channel: FreeYourMetadata
Gov 2.0 Expo 2010:   Tim Berners-Lee, "Open, Linked Data for a Global Community"
Gov 2.0 Expo 2010: Tim Berners-Lee, "Open, Linked Data for a Global Community"
Published: 2010/05/26
Channel: O'Reilly
Getting Started with the Linked Data Platform (LDP)
Getting Started with the Linked Data Platform (LDP)
Published: 2014/08/13
Channel: SemanticWeb.com
Blockchain for Linked Data
Blockchain for Linked Data
Published: 2017/10/06
Channel: Koneksys
Linked Data Service (english version)
Linked Data Service (english version)
Published: 2016/05/02
Channel: E-Government Schweiz
Walk Before You Run: Prerequisites to Linked Data
Walk Before You Run: Prerequisites to Linked Data
Published: 2015/02/25
Channel: OCLCVideo
ELAG 2015 I Scaling data streams with Catmandu and Linked Data Fragments
ELAG 2015 I Scaling data streams with Catmandu and Linked Data Fragments
Published: 2015/09/23
Channel: Kungliga biblioteket
Linking Data from Different Excel Sheets and Workbooks
Linking Data from Different Excel Sheets and Workbooks
Published: 2011/03/28
Channel: ExcelFormulas
Linked Data Services
Linked Data Services
Published: 2016/08/25
Channel: ExLibrisLtd
How You Can Make the Transition from MARC to Linked Data Easier
How You Can Make the Transition from MARC to Linked Data Easier
Published: 2015/11/10
Channel: OCLCResearch
INSPIRE and linked data
INSPIRE and linked data
Published: 2017/09/19
Channel: Inspire EU
Linking Data Sets: Part 1 - Creating and editing data set links
Linking Data Sets: Part 1 - Creating and editing data set links
Published: 2015/08/13
Channel: Oracle Big Data Discovery
Multi-dimensional linked data exploration with Glue
Multi-dimensional linked data exploration with Glue
Published: 2016/03/30
Channel: Thomas Robitaille
Linked Data in Sweden 2017
Linked Data in Sweden 2017
Published: 2017/04/26
Channel: Semantic Web LiU
MOOC Semantic Web and Linked Data 3.1
MOOC Semantic Web and Linked Data 3.1
Published: 2017/05/16
Channel: UPM
Linked Data: Building the Future for Libraries
Linked Data: Building the Future for Libraries
Published: 2016/11/03
Channel: NoveList
Linked Data Faceted Browser
Linked Data Faceted Browser
Published: 2017/07/06
Channel: Ali Khalili
Microsoft Office Excel 2013 Tutorial: Linking Data Between Worksheets | K Alliance
Microsoft Office Excel 2013 Tutorial: Linking Data Between Worksheets | K Alliance
Published: 2013/09/12
Channel: K Alliance
Linked Data Fragments -- Scalable Web-querying
Linked Data Fragments -- Scalable Web-querying
Published: 2014/03/11
Channel: Ruben Verborgh
Avoin Suomi 2014 menestystarina: Linked Data Finland
Avoin Suomi 2014 menestystarina: Linked Data Finland
Published: 2014/06/19
Channel: Valtioneuvoston kanslia VNK
الوب الدلالي والبيانات المترابطة Linked Data and Semantic Web
الوب الدلالي والبيانات المترابطة Linked Data and Semantic Web
Published: 2014/08/12
Channel: Wikilogia
Linked Data at the National Library of Sweden
Linked Data at the National Library of Sweden
Published: 2012/11/23
Channel: LibraryOfCongress
From Big Data to Linked Data: Making Sense of Massive, Highly Connected, Multi-structured Datasets
From Big Data to Linked Data: Making Sense of Massive, Highly Connected, Multi-structured Datasets
Published: 2015/08/28
Channel: Accumulo Summit
Linked Data Management for Business
Linked Data Management for Business
Published: 2015/11/16
Channel: FP7 COMSODE
MOOC Semantic Web and Linked Data 2.2
MOOC Semantic Web and Linked Data 2.2
Published: 2017/05/16
Channel: UPM
LMF Screencast: Publishing Legacy Data as Linked Data
LMF Screencast: Publishing Legacy Data as Linked Data
Published: 2012/03/26
Channel: Sebastian Schaffert
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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In computing, linked data (often capitalized as Linked Data) is a method of publishing structured data so that it can be interlinked and become more useful through semantic queries. It builds upon standard Web technologies such as HTTP, RDF and URIs, but rather than using them to serve web pages for human readers, it extends them to share information in a way that can be read automatically by computers.

Tim Berners-Lee, director of the World Wide Web Consortium (W3C), coined the term in a 2006 design note about the Semantic Web project.[1]

Linked data may also be open data, in which case it is usually described as linked open data (LOD).

Principles[edit]

Tim Berners-Lee outlined four principles of linked data in his "Linked Data" note of 2006,[1] paraphrased along the following lines:

  1. Use URIs to name (identify) things.
  2. Use HTTP URIs so that these things can be looked up (interpreted, "dereferenced").
  3. Provide useful information about what a name identifies when it's looked up, using open standards such as RDF, SPARQL, etc.
  4. Refer to other things using their HTTP URI-based names when publishing data on the Web.

Tim Berners-Lee gave a presentation on linked data at the TED 2009 conference.[2] In it, he restated the linked data principles as three "extremely simple" rules:

  1. All kinds of conceptual things, they have names now that start with HTTP.
  2. If I take one of these HTTP names and I look it up...I will get back some data in a standard format which is kind of useful data that somebody might like to know about that thing, about that event.
  3. When I get back that information it's not just got somebody's height and weight and when they were born, it's got relationships. And when it has relationships, whenever it expresses a relationship then the other thing that it's related to is given one of those names that starts with HTTP.

Components[edit]

Linked open data[edit]

Linked open data is linked data that is open data.[3][4][5] Tim Berners-Lee gives the clearest definition of linked open data in differentiation with linked data.

Linked Open Data (LOD) is Linked Data which is released under an open license, which does not impede its reuse for free.

— Tim Berners-Lee, Linked Data[1][6]

Large linked open data sets include DBpedia and Wikidata.

History[edit]

The term "linked open data" has been in use since at least February 2007, when the "Linking Open Data" mailing list[7] was created.[8] The mailing list was initially hosted by the SIMILE project[9] at the Massachusetts Institute of Technology.

Linking Open Data community project[edit]

The above diagram shows which Linking Open Data datasets are connected, as of August 2014. This was produced by the Linked Open Data Cloud project, which was started in 2007. Some sets may include copyrighted data which is freely available.[10]
The same diagram as above, but for February 2017, showing the growth in just two and a half years.

The goal of the W3C Semantic Web Education and Outreach group's Linking Open Data community project is to extend the Web with a data commons by publishing various open datasets as RDF on the Web and by setting RDF links between data items from different data sources. In October 2007, datasets consisted of over two billion RDF triples, which were interlinked by over two million RDF links.[11][12] By September 2011 this had grown to 31 billion RDF triples, interlinked by around 504 million RDF links. A detailed statistical breakdown was published in 2014.[13]

European Union projects[edit]

There are a number of European Union projects[when defined as?] involving linked data. These include the linked open data around the clock (LATC) project,[14] the PlanetData project,[15] the DaPaaS (Data-and-Platform-as-a-Service) project,[16] and the Linked Open Data 2 (LOD2) project.[17][18][19] Data linking is one of the main goals of the EU Open Data Portal, which makes available thousands of datasets for anyone to reuse and link.

Datasets[edit]

  • DBpedia – a dataset containing extracted data from Wikipedia; it contains about 3.4 million concepts described by 1 billion triples, including abstracts in 11 different languages
  • FOAF – a dataset describing persons, their properties and relationships
  • GeoNames provides RDF descriptions of more than 7,500,000 geographical features worldwide.
  • UMBEL – a lightweight reference structure of 20,000 subject concept classes and their relationships derived from OpenCyc, which can act as binding classes to external data; also has links to 1.5 million named entities from DBpedia and YAGO
  • Wikidata – a collaboratively-created linked dataset that acts as central storage for the structured data of its Wikimedia Foundation sister projects

Dataset instance and class relationships[edit]

Clickable diagrams that show the individual datasets and their relationships within the DBpedia-spawned LOD cloud (as shown by the figures to the right) are available.[20][21]

See also[edit]

References[edit]

Further reading[edit]

External links[edit]

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