Simple Linked Data Publishing For Non Programmers from Kingsley Idehen on 2012-07-25 (public-lod from July 2012) Openlink/virtuoso-opensource. Tim Berners-Lee. Biography A graduate of Oxford University, Tim Berners-Lee invented the World Wide Web, an internet-based hypermedia initiative for global information sharing while at CERN, the European Particle Physics Laboratory, in 1989.
He wrote the first web client and server in 1990. His specifications of URIs, HTTP and HTML were refined as Web technology spread. He is the 3Com Founders Professor of Engineering in the School of Engineering with a joint appointment in the Department of Electrical Engineering and Computer Science at the Laboratory for Computer Science and Artificial Intelligence ( CSAIL) at the Massachusetts Institute of Technology (MIT) where he also heads the Decentralized Information Group (DIG). He is also a Professor in the Electronics and Computer Science Department at the University of Southampton, UK. Tim is a Director of the World Wide Web Foundation, launched in 2009 to coordinate efforts to further the potential of the Web to benefit humanity.
(Longer biography) Address Email. Linked Data - Design Issues. Up to Design Issues The Semantic Web isn't just about putting data on the web.
It is about making links, so that a person or machine can explore the web of data. With linked data, when you have some of it, you can find other, related, data. Like the web of hypertext, the web of data is constructed with documents on the web. However, unlike the web of hypertext, where links are relationships anchors in hypertext documents written in HTML, for data they links between arbitrary things described by RDF,. Use URIs as names for things Use HTTP URIs so that people can look up those names.
Simple. The four rules I'll refer to the steps above as rules, but they are expectations of behavior. The first rule, to identify things with URIs, is pretty much understood by most people doing semantic web technology. The second rule, to use HTTP URIs, is also widely understood. The basic format here for RDF/XML, with its popular alternative serialization N3 (or Turtle). Basic web look-up or in RDF/XML. Linked Data - Connect Distributed Data across the Web. Dereferenceable Uniform Resource Identifier. A dereferenceable Uniform Resource Identifier or dereferenceable URI is a resource retrieval mechanism that uses any of the internet protocols (e.g.
HTTP) to obtain a copy or representation of the resource it identifies. In the context of traditional HTML web pages, this is the normal and obvious way of working: A URI refers to the page, and when requested the web server returns a copy of it. In other non-dereferenceable contexts, such as XML Schema, the namespace identifier is still a URI, but this is simply an identifier (i.e. a namespace name). There is no intention that this can or should be dereferenced. There is even a separate attribute, schemaLocation, which may contain a dereferenceable URI that does point to a copy of the schema document. In the case of Linked Data, the representation takes the form of a document (typically HTML or XML) that describes the resource that the URI identifies.
Background Formats Hash URI example Entity Berlin: Slash URI example SPARQLbin.com. Toward a Basic Profile for Linked Data. Update In March 2012, IBM and its partners submitted the Linked Data Basic Profile specification to W3C. Motivation There is interest in using Linked Data technologies for more than one purpose. We have seen interest in it to expose information -- public records, for example -- on the Internet in a machine-readable format. We have also seen interest in using it for inferring new information from existing information, for example in pharmaceutical applications or IBM Watson™ (see the Resources section for links to more information).
The IBM® Rational® team has been using Linked Data as an architectural model and implementation technology for application integration. Rational software is a vendor of software development tools, particularly those that support the general software development process, such as bug tracking, requirements management, and test management tools. Resources Containers Paging Validation Back to top Terminology Link Linked Data Specification Basic Profile Client Server URI: URI: Semantic Web.
After a general overview of the concept of Linked Data, we describe several practical recipes for publishing information as Linked Data on the Web. This tutorial has been superseeded by the book Linked Data: Evolving the Web into a Global Data Space written by Tom Heath and Christian Bizer. This tutorial was published in 2007 and is still online for historical reasons. The Linked Data book was published in 2011 and provides a more detailed and up-to-date introduction into Linked Data. The goal of Linked Data is to enable people to share structured data on the Web as easily as they can share documents today. The term Linked Data was coined by Tim Berners-Lee in his Linked Data Web architecture note. Applying both principles leads to the creation of a data commons on the Web, a space where people and organizations can post and consume data about anything.
This chapter describes the basic principles of Linked Data. Extensible use of RDF in a Business Context. Kerstin Forsberg, Viktoria Institute and Adera, O Hamngatan 41-43, S-411 10 Gothenburg Sweden, email@example.com Lars Dannstedt, Volvo Information Technology, Web Program Center, S-405 08, Gothenburg Sweden, firstname.lastname@example.org Abstract The next generation of intranets should facilitate the structuring of information as well as the organising of communication in networking organisations.
For many organisations, one step in that direction is to structure information by adding metadata. We have encountered problems when applying Dublin Core, a metadata element set developed for discovery of existing information resources on the public Internet, on an extensive intranet. Keywords: Metadata, RDF, XML, Intranet 1. The first generation of intranets provided easy access to large amount of information using (hyper)links.
The introduction of XML (eXtensible Markup Language) will make information self-describing  and facilitate information discovering. 2. 3. 4. Figure 1. 5. DCMI Home: Dublin Core® Metadata Initiative (DCMI) The Friend of a Friend (FOAF) project. Tools - Semantic Web Standards. Overview This Wiki contains a collection of tool references that can help in developing Semantic Web applications.
These include complete development environments, editors, libraries or modules for various programming languages, specialized browsers, etc. The goal is to list such tools and not Semantic Web applications in general (the interested reader may consider looking at the W3C SW Use Case Collection for those.) The tool content of this wiki is still to be maintained by the community and not by the W3C staff. If you are interested in adding to and/or modifying the relevant pages, please consult the separate Tool Contributors’ page. Search possibilities The current Wiki contains references to 336 tools.
Search through categories, i.e., reasoners, programming environments, browsers, etc. Last modified/added Tool Data in RDF There is also an option to get one RDF/XML graph for all tools. Other resources Sweet Tools maintained by Michael K. History. IsaViz Overview. News IsaViz and Java 1.6 (2007-10-21) IsaViz 2.x is not compatible with Java 1.6 or later.
It is recommended to download IsaViz 3.0 which does work with any version of Java. An alpha release is available (see Download section), which should be as stable as IsaViz 2.1 except for the new, still under development, Fresnel and FSL features. IsaViz and GraphViz (2007-05-23) IsaViz 2.x is not compatible with GraphViz 2.10 or later. Several bugs have been fixed in the FSL engines for Jena, Sesame and the visual FSL debugger embedded in IsaViz. Fresnel in IsaViz (2006-05-19) IsaViz 3.0 now supports Fresnel lenses and several elements of the Core Format Vocabulary. FSL for Sesame 2-alpha-3 (2006-04-25) The FSL engine for Sesame 2 now works with version 2alpha3 instead of version 2alpha1.
FSL for Sesame 1.2.2 (2005-12-06) In addition to the Sesame 2.0 implementation of FSL, there is now a Sesame 1.2.2 implementation written by Ryan Lee from project Simile. Java FSL Documentation available (2005-11-18) Linked Data - Connect Distributed Data across the Web.