Knows graphic conventions for depicting RDF-based models. – Linked Data for Professional Education

OWL and DL Homework Exercises

Sat, 21 Jan 2017 06:46:41 +0000

This document contains several "written" and "electronic" homework questions originally from the course "Semantic Web Topics" at LeHigh University. They include: Draw the equivalent graph given an OWL document expressed in RDF syntax; In the OWL RDF/XML-based syntax, write two different axioms (i.e., using a different combination of constructors) stating that the classes Man and Woman are disjoint- without using owl:disjointWith; Given a sets of triples in Turtle syntax which describes several resources, write a set of OWL2 axioms that would allow one to infer several properties about each resource; For each of a series of axioms, determine which of three possible interpretations satisfy it.

URL: http://www.cse.lehigh.edu/~heflin/courses/sw-2013/hw3.pdf
Keywords: Web Ontology Language (OWL), Axioms, Disjointedness, RDF Schema, Description Logic (DL)
Author: Heflin, Jeff
Date created: 2013-02-01 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P2H
Educational use: assessment
Educational audience: teacher-educationSpecialist
Interactivity type: active

RDF Homework Exercises

Sat, 21 Jan 2017 06:46:41 +0000

This document contains several "written" and "electronic" homework questions originally from the course "Semantic Web Topics" at LeHigh University. They include: Translating an RDF Graph into the Turtle syntax; Using the RDFS entailment rules determine what triples can be inferred from an RDF Graph; Explain the advantage of using multiple rdfs:range statements over using the union of the individual ranges to determine the actual range; Draw the equivalent graph when given an RDF document written in XML; Write the equivalent RDF/XML for a series of online references; Using Jena, write a class object that can read in an RDF file that was written using a specific vocabulary and output a list of the publications, one per line.

URL: http://www.cse.lehigh.edu/~heflin/courses/sw-2013/hw1.pdf
Keywords: Turtle, RDF Schema, Entailment regimes, eXtensible Markup Language (XML), Apache Jena, Java
Author: Heflin, Jeff
Date created: 2013-02-01 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P4H
Educational use: assessment
Educational audience: teacher-educationSpecialist
Interactivity type: active

Visualizing RDF Graphs

Mon, 09 Jan 2017 06:45:30 +0000

In this video tutorial, the presenter uses Omnigraffle to sketch out the RDF data model, explaining each component as he does so. The walk-through is not purely conceptual; the presenter also uses data from an RDF/XML file to fill in the URIs corresponding to the nodes and edges of his graph. Finally, a second RDF visualization tool, RDF Gravity, is briefly demonstrated.

URL: https://www.youtube.com/watch?v=ube9BUhjeUk
Keywords: RDF, Triple, Graph, HTTP URIs
Author: Sherlock, David
Date created: 2013-06-05 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M

Implementing Graph Transformation Languages using RDF Storage and SPARQL Queries

Thu, 24 Nov 2016 05:51:18 +0000

RDF has so far not been widely used in the context of graph rewriting tools. In this paper, the authors take AToMPM, a research-oriented meta-modelling and graph rewriting tool and extend it by adding RDF-based graph transformation functionality. Addressed is the graph matching problem, generating custom SPARQL queries for each rule pattern, and using them to efficiently perform matches on a source RDF graph.

URL: https://www.cs.mcgill.ca/media/tech_reports/12_Implementing_Graph_Transformation_Languages_using_RDF_Storage_and_SPARQL_Queries.pdf
Keywords: CRUD, Graph rewriting, igraph, RDFLib, Graph transformation
Author: Verbrugge, Clark
Date created: 2012-08-31 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P30M
Educational use: instruction
Educational audience: teacher-educationSpecialist
Interactivity type: expositive

Check and Visualize your RDF documents

Tue, 18 Oct 2016 05:39:01 +0000

This resource is actually a validation tool; Enter a URI or paste an RDF/XML document into a text field and representation of the corresponding data model (triples) as well as an optional graphical visualization of the data model will be displayed.

URL: https://www.w3.org/RDF/Validator/
Keywords: RDF, Validation, Triple, Graph
Author: Eric Prud’hommeaux
Publisher: W3C
Date created: 2006-02-28 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P15M
Interactivity type: active

Introducing Turtled

Abi Evans — Thu, 13 Aug 2015 13:45:22 +0000

A brief screencast about Turtled, a simple online RDF Turtle editor that allows you to render an RDF graph visually, restrict to sub-graphs via SPARQL, and export the visualization as SVG.

URL: https://www.youtube.com/watch?v=LRtJAUdASsE
Keywords: Turtle, Graph
Author: Hausenblas, Michael
Date created: 2012-07-30 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P5M

DBpedia Semantic Search with "Explore&Query" by Vinge Free

Abi Evans — Thu, 13 Aug 2015 03:26:21 +0000

Demonstration of "Explore&Query", a new visual search method for the Semantic Web. The presenter builds an advanced SPARQL query- without writing any code- that uses DBpedia data to answer a complex question about professional soccer goalkeepers. The results are then exported to a separate data analytics tool, Spotfire, to create a visualization.

URL: https://www.youtube.com/watch?v=lmmJISXkNP0
Keywords: Visual search, DBpedia, SPARQL, Spotfire
Author: Kerstna, Jurgen
Publisher: Vinge Free
Date created: 2013-08-22 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M
Educational audience: professional

W3C RDF Validation Service

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

This free service allows you to check and visualize your RDF documents. By entering a URI or pasting an RDF/XML document into the text field, a triple representation of the corresponding data model as well as an optional graphical visualization of the data model will be displayed.

URL: http://www.w3.org/RDF/Validator/
Keywords: Validation, RDF/XML
Author: Prud’hommeaux, Eric
Publisher: W3C
Date created: 2006-02-28 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M

RDF-101

Abi Evans — Thu, 13 Aug 2015 03:26:18 +0000

RDF (Resource Description Framework) is the data model of the Semantic Web. . In this lesson you will learn: 1) What RDF is and how it fundamentally differs from XML and relational databases; 2) What is meant by a "graph data model"; 3) How RDF is typically represented visually; 4) The importance of the URI, and the significance (or lack thereof) of identity "universality".

URL: http://www.cambridgesemantics.com/semantic-university/rdf-101
Keywords: HTTP URIs, Vocabulary, Graph model
Publisher: Cambridge Semantics
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M

Interaction with Linked Data

Abi Evans — Thu, 13 Aug 2015 03:26:17 +0000

This slide presentation focuses on providing users the means for exploring Linked Data. It gives an overview of current visualization tools and techniques, looking at semantic browsers and applications for presenting the data to the end user. Also described are existing search options, based on a mix of semantic information and text processing. Finally, the presentation concludes with approaches for Linked Data analysis, describing how available data can be synthesized and processed in order to draw conclusions. NOTE: These slides represent material from several lessons that comprised a larger "module" of the EUCLID Project. As such, they cover a wider range of topics than most resources.

URL: http://www.slideshare.net/EUCLIDproject/interaction-with-linked-data?related=2
Keywords: Semantic search, Data dashboard, Faceted search, User interaction, Machine learning, R (programming language)
Author: Norton, Barry
Publisher: EUCLID Project
Date created: 2013-06-16 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P1H30M