Hand's on experience with Ontologies
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Hand's on experience with Ontologies
Course | UNIK4710, UNIK9710 |
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Title | Hand's on experience with Ontologies |
Lecture date | 2014/02/07 9.15-12.00 |
presented | by Josef Noll |
Objective | This lecture will be a run-through of the pizza example |
Learning outcomes | Having joined this course, you
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Pensum (read before) | Tasks - prepare prior to the lecture
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References (further info) | for further reading
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Keywords | Protege, Ontology, FOAF, Semantic MediaWiki, Classes, Category, Property |
this page was created by Special:FormEdit/Lecture, and can be edited by Special:FormEdit/Lecture/Hand's on experience with Ontologies.
Task for next lecture
Test yourself, answer these questions
- What is FOAF?
- What is Protege?
- Differences between Protégé 3.X and Protégé 4.X
- What is Web Protégé
- How do I load an OWL file (Protege)?
- What is Semantic MediaWiki?
- What are the differences between MediaWiki and Wikipedia?
Lecture Notes & Scenarios
The original lecture was provided by Susana Rodriguez de Novoa,
Lecture Notes 2014
- Lecture notes - 2014: Media:UNIK4710-L4-v14-LectureNotes.pdf
- Video for the third lesson - mms://lux.unik.no/UNIK4710-JN/UNIK-20140207.wmv
Lecture Notes 2013
- Lecture notes - 2013: Media:UNIK4710-L4-v13-LectureNotes.pdf
Lecture Notes 2012
- Lecture notes - 2012:Media:UNIK4710-L4-v12-LectureNotes.pdf
Presentations
Presentations 2013
- 'Protégé: Classes, Properties and Instances' by Susana, Media:UNIK4710-ProtegePresentation.ppt, Media:UNIK4710-Protege_Presentation.pdf
Other Info
- Title
- Hand's on experience with Ontologies
- Author
- Josef Noll
- Footer
- Hand's on experience with Ontologies
- Subfooter
- UNIK4710/UNIK9710
⌘ Notes on Protege installation
DOT for Graphviz tab (for MAC): http://wiki.unik.no/index.php/Unik/ProtegeUsage
Alternative to Graphviz is JambalayaTab:
⌘ Basic Concepts
Classes are interpreted as sets that contain individuals.
Individuals represent objects in the domain that we are interested in.
Properties are binary relations on individuals - i.e. properties link two individuals together.
⌘ Creating clases
⌘ Concept: Disjointness
- All classes could potentially overlap: This means an individual could be both a Pizza and a Ice Cream at the same time.
- If we state that classes are disjoint: This means an individual cannot be both a Pizza and a Ice Cream at the same time.
⌘ Creating Properties
⌘ Concept: Characteristics of properties
- If a property is functional, for a given individual, there can be at most one individual that is related to the individual via the property.
- If some property links individual a to individual b then its inverse property will link individual b to individual a.
⌘ Concept: Characteristics of properties
- If a property is transitive, and the property relates individual a to individual b, and also individual b to individual c, then we can infer that individual a is related to individual c via property P.
- If a property P is symmetric, and the property relates individual a to individual b then individual b is also related to individual a via property P.
⌘ Creating Conditions
⌘ Concept: Characteristics of conditions
- AllValuesFrom: All values of the property must be of a certain type.
- SomeValuesFrom: At least one value of the property must be of a certain type.
⌘ Concept: Characteristics of conditions
- HasValue: At least one of the values of the property is a certain value.
- Cardinality: The property must have at least/at most/exactly x values.
Time planning
- Use of classes, properties, category...
- discussion
Prepare by reading;
- http://www.semantic-mediawiki.org/wiki/Help:Ontology_import
- and "more" here in detail: http://www.aifb.uni-karlsruhe.de/Publikationen/showPublikation?publ_id=1211
Try:
- http://cwi.unik.no/wiki/Special:ExportRDF - and use "your user" as an example
- Running Pizza example in Protege - hand-on experience: http://www.co-ode.org/ontologies/pizza
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