Course	UNIK4710, UNIK9710
Title	Context-aware Scenarios
Lecture date	2012/02/03
Lecturer(s), (users)	Josef.Noll
Objective	During this lecture you will present to your colleagues the scenario which you would like to work with.
Learning outcomes	Having joined this lecture and prepared your scenario description, you have a basic understanding of "tripple store" (.rdf) and ontologies (.owl) will be able to describe a scenario based on who, when, what, how define some hierarchical overview on "classes" being involved in your scenario prepare for the .owl implemenation of your classes
Pensum (read before)	"What is a scenario" Create a powerpoint (3-6 slides) of your envisaged scenario Create the relations for the major items, e.g. Context, Preferences, ... See the YouTube videos listed under References
References (further info)	See examples of Scenarios from earlier courses http://wiki.unik.no/index.php/Courses/4710Semantics Steffen Staab, Rudi Studer (Ed.), Handbook on Ontologies, Springer, - see Google Books RDF: p 58ff OWL: p 67ff An introduction to the semantic Web: http://www.youtube.com/watch?v=OGg8A2zfWKg And some more fun - Ordering of a Pizza in the future: http://www.youtube.com/watch?v=RNJl9EEcsoE&feature=related Video Video for the third lesson: mms://lux.no/unik4710-JN/UNIK-20120203.wmv
Keywords	Scenario, Context, Location, Profile, RDF, Ontology, Semantic Technologies

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Contents 1 Test yourself, answer these questions 2 Scenarios 2.1 Semantics 2.2 Challenges with ontologies 2.3 Summary on Ontologies 2.4 Lecture Notes & Scenarios

Test yourself, answer these questions

• How do I start to build a Semantic Web?
• What is the role of Ontologies in the Semantic Web?
• What is RDF and what is it good for?
• Why RDF model is different from the XML model?
• What is OWL?

Scenarios

• Knowledge management by Arne, see Lecture notes Basics_of_Semantics, Media:UNIK4710-L2-v12-LectureNotes.pdf
• eHealth at home by Serhat, see Media:UNIK4710-Serhat-Scenario.pptx
• Public screen - group profiles by Fabrice, see Lecture notes Basics_of_Semantics
• Tourist recommender by Susana, see Lecture notes Basics_of_Semantics, Media:UNIK4710_MobileServiceDSusana.pdf
• Hypermusic by Sichao Song Media:UNIK4710_Hypermusic_Song.pptx

Semantics

• .xml realtion between subject & object
• .rdf subject, predict, object
• .rdfs vocabulary for properties
• ontologies as data models of a domain
  • describe through rdf or owl
  • owl is more expressive

• Extension of semantics through rules
• Rules might replace ontologies

Challenges with ontologies

• ontologies describe the data on a Web
• very good suited as a knowledge base, e.g. medical history, interworking of medicine, oil drilling
• when using a semantic model in the real world, the challenge is to get changes (updates) to the ontologies. Example: car industry, where cars are produced under the same header with slightly different outfit, where manufacturers change frequently,...

Summary on Ontologies

• cover only limited area (specific area, "swamps of ontologies")
• have a "creation date" (timestamp) in mind
  • upgradability?
  • consistency when upgrading one ontology
• are good for knowledge management
• interface between knowledge management and processes is not clear

Lecture Notes & Scenarios

Media:UNIK4710-L3-v12-LectureNotes.pdf