Uses prefixes for URIs in RDF specifications and data. – Linked Data for Professional Education

A Quick Tutorial on the Turtle RDF Serialization

Fri, 27 Jan 2017 06:47:08 +0000

This blog post covers the use of Turtle, which the author describes as "one of the more humane RDF serializations". Turtle is simple to understand, is human readable and editable in its raw form, and is relatively compact. In order to explain the serialization, the author presents the basics of the RDF data model.

URL: http://haystack.csail.mit.edu/blog/2008/11/06/a-quick-tutorial-on-the-tutrle-rdf-serialization/
Keywords: Turtle, Blank nodes, Datatypes
Author: Benson, Edward
Publisher: MIT CSAIL Research
Date created: 2008-11-06 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P15M
Educational use: instruction
Educational audience: professional
Interactivity type: expositive

prefix.cc: Namespace Lookup for RDF Developers

Thu, 29 Dec 2016 06:44:04 +0000

The intention of this service is to simplify a common task in the work of RDF developers: remembering and looking up URI prefixes. One can look up prefixes from the search box on the homepage, or directly by typing URLs into a browser bar, such as http://prefix.cc/foaf or http://prefix.cc/foaf,dc,owl.ttl. The service supports over a dozen syntaxes for displaying the prefix mapping. New prefix mappings can be added by anyone. If multiple conflicting URIs are submitted for the same namespace, visitors can vote for the one they consider the best.

URL: http://prefix.cc/
Keywords: Namespace, HTTP URIs
Author: Cyganiak, Richard
Publisher: Digital Enterprise Research Institute (DERI)
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M
Interactivity type: active

Linked Data Basics for Techies

Thu, 29 Dec 2016 06:44:04 +0000

This guide is intended to be a crash course for a techie/programmer who needs to learn the basics ASAP. It is not intended as an introduction for managers or policy makers. It is primarily aimed at people who are tasked with creating RDF and need information quickly. It is also useful to people who want to work with RDF data.

URL: http://openorg.ecs.soton.ac.uk/wiki/Linked_Data_Basics_for_Techies
Keywords: HTTP URIs, Namespace, Triple, Graph
Publisher: OpenOrg
Date created: 2015-03-26 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M

An Uber-comparison of RDFa, Microdata and Microformats

Abi Evans — Sun, 17 Jul 2016 06:32:29 +0000

This blog post discusses issues related to technical compatibility issues between the RDFa and Microdata formats. It provides an easy-to-read list of similarities and differences between RDFa, Microdata and Microformats. A simple table summarizing all features across each structured data syntax is listed, with a link to a brief explanation of the feature.

URL: http://manu.sporny.org/2011/uber-comparison-rdfa-md-uf/
Keywords: RDFa, Microdata, Structured data, Internationalized Resource Identifiers (IRIs), HTML, RDF
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P30M

Multi-Agent and Semantic Web Systems: RDF Models

Abi Evans — Fri, 13 Nov 2015 06:00:10 +0000

This slide presentation of lecture material was used as part of a course given at The University of Edinburgh School of Informatics. This lecture discusses the Semantic Web Layer Cake, the relational data model, and distributed data. Introduces the RDF graph model and continues discussion of the role of HTTP URIs, including fragment identifiers and XML QNames. Introduces RDF syntaxes/serializations (N3 and Turtle) and the FOAF Vocabulary.

URL: http://www.inf.ed.ac.uk/teaching/courses/masws/lectures-14/5-full.pdf
Keywords: QName, FOAF, Turtle, N3, HTTP URIs, Graph, RDF
Author: McNeill, Fiona
Date created: 2013-01-28 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P25M
Educational use: instruction
Educational audience: student
Interactivity type: expositive

Namespaces and Application Profiles

Abi Evans — Sun, 04 Oct 2015 05:32:27 +0000

These slides are lectures notes from a unit of the course, "Organization of Information and Resources" which was taught at the University of Washington. The subjects covered are namespaces and their technical and semantic functions, including definition, use, examples, and emerging practice. Application profiles are also discussed and examples given.

URL: https://courses.washington.edu/is530/win08/lecture%20notes/7.5%20Namespaces%20and%20Application%20Profiles.pdf
Keywords: Metadata, Application profile, Namespace, XML
Author: Tennis, Joseph
Date created: 2008-01-01 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P30M

Application Profiles as Machine-Understandable Narratives

Abi Evans — Sun, 04 Oct 2015 05:32:27 +0000

The SCHEMAS Registry aims at providing a selected and annotated overview of metadata vocabularies and their use in application environments. Based on harvested metadata in RDF (Resource Description Framework), the registry
allows users to explore links between "namespace schemas", which declare standard definitions of metadata terms, and "application profiles" – RDF
statements about the use or adaptation of namespace terms for particular domains, services, or projects.

URL: https://journals.tdl.org/jodi/index.php/jodi/article/viewFile/40/43
Keywords: Metadata, Application profile, Namespace, Interoperability, XML
Author: Salokhe, Gauri
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M
Educational use: instruction
Educational audience: generalPublic
Interactivity type: expositive

Semantic Web Tutorial 9/14: RDF Schema and OWL 1/4

Abi Evans — Wed, 30 Sep 2015 22:30:59 +0000

Video tutorial describing the role of vocabularies in Semantic Web development, particularly the reuse of existing vocabularies. How to access predefined classes and properties through a vocabulary's namespace. Uses an example showing how RDF Schema can be used to describe Dublin Core metadata terms. One in a series of related videos.

URL: https://www.youtube.com/watch?v=R3k36WFqhKw
Keywords: RDF Schema, Namespace, Dublin Core, Metadata, Class, Property, Vocabulary
Author: Sadawi, Noureddin
Date created: 2014-03-16 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M
Educational audience: student
Interactivity type: expositive

How to Build Linked Data APIs with JSON LD and Hydra

Abi Evans — Thu, 13 Aug 2015 03:26:20 +0000

Discussion of the challenges facing Web developers in the proper design and implementation of Web APIs. Based on a simple Web API, this workshop use several use cases to demonstrate how JSON-LD and Hydra simplify the creation and consumption of interoperable Web APIs. By necessity, includes overview of Linked Data Principles.

URL: https://www.youtube.com/watch?v=fJCtaNRxg9M
Keywords: JSON-LD, Hypermedia, Web API, Hydra, Schema.org
Author: Lanthaler, Markus
Publisher: ProgrammableWeb
Date created: 2014-10-02 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P35M

RDF Nuts & Bolts

Abi Evans — Thu, 13 Aug 2015 03:26:19 +0000

In this lesson the user will learn: 1) The different RDF serializations; 2) How to read and write real RDF; 3) Some common RDF vocabularies to use when getting started; 4) What to look for in a triple store.

URL: http://www.cambridgesemantics.com/semantic-university/rdf-nuts-bolts
Keywords: Triple store, Turtle, N-Triples, Tri-G, Vocabulary
Publisher: Cambridge Semantics
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M
Educational use: instruction
Educational audience: professional