Uses the lang() function to return the language tag of an RDF literal. – Linked Data for Professional Education https://ld4pe.dublincore.org Learning resources tagged by competency Thu, 19 Nov 2020 14:45:03 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.16 All Roads Lead To? Experiments With Gephi, Linked Data and Wikipedia https://ld4pe.dublincore.org/learning_resource/all-roads-lead-to-experiments-with-gephi-linked-data-and-wikipedia/ Sat, 14 Jan 2017 06:46:01 +0000 https://ld4pe.dublincore.org/learning_resource/all-roads-lead-to-experiments-with-gephi-linked-data-and-wikipedia/ This blog post shares an example using the Semantic Web Import plugin (available for the Gephi visualization tool) to create a rather complex geospatial visualization. This tutorial also includes good information on how to explore a dataset using SPARQL queries and how to filter query results to "clean-up" DBpedia data so that it is more suitable for use.

URL: https://johngoodwin225.wordpress.com/2014/03/26/all-roads-lead-to-experiments-with-gephi-linked-data-and-wikipedia/
Keywords: Gephi, DBpedia, Geospatial data, SPARQL
Author: Goodwin, John
Date created: 2014-03-26 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M

]]> SPARQL: Using Operators Tutorial and Quiz https://ld4pe.dublincore.org/learning_resource/sparql-using-operators-tutorial-and-quiz/ Thu, 24 Nov 2016 05:51:17 +0000 https://ld4pe.dublincore.org/learning_resource/sparql-using-operators-tutorial-and-quiz/ This slide tutorial focuses on using various operators in SPARQL queries. Several examples are provided which include the RDF data being queried, the SPARQL query itself, and the result table. This is followed by quiz questions which ask the user to query DBpedia's SPARQL endpoint. The answers to the question (in the form of completed SPARQL queries) are included.

URL: http://skkudatalab.weebly.com/sparql-operators.html
Keywords: DBpedia, SPARQL
Author: Oh, Sam
Publisher: Sungkyunkwan University (SKKU)
Date created: 2016-11-22 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P40M
Educational use: instruction
Educational audience: professional
Interactivity type: expositive

]]> SPARQL by Example https://ld4pe.dublincore.org/learning_resource/sparql-by-example/ https://ld4pe.dublincore.org/learning_resource/sparql-by-example/#respond Thu, 13 Aug 2015 03:26:17 +0000 https://ld4pe.dublincore.org/learning_resource/sparql-by-example/ This is a very in-depth resource that covers nearly every aspect of SPARQL (both 1.0 and 1.1). Includes example queries (over many datasets), links to endpoints (ARQ, OpenLink's Virtuoso, Redland's Rasqal), and expected results. NOTE: The number of competencies tagged to this resource represent only a small portion its total coverage – it was necessary to omit many of the more commonly tagged competencies to save space.

URL: http://www.cambridgesemantics.com/semantic-university/sparql-by-example
Keywords: SPARQL, Graph traversal, Negation, SPARQL endpoint, Projected expressions
Author: Feigenbaum, Lee
Publisher: W3C SPARQL Working Group
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P75M
Educational use: instruction
Educational audience: student
Interactivity type: mixed

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