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Data and Ontologies
 Kotowski, Jakub ; Štěpánek, Petr (advisor) ; Vojtáš, Peter (referee)
In the core of current semantic web efforts is the notion of ontology. Although ontologies have been explored since times of the Greek philosopher Aristotle already there is still much to learn in this area. There are many tutorials and introductory texts both into the semantic web as whole and into its individual technologies but the learning curve is still very steep and developers have to seek answers to questions that are often topic of current research or the answer is simply not known yet. Much of these difficulties one encounters at what is often the very first step towards building a semantic web application - creating an ontology. In this work I point out some of the difficulties I encountered myself during the work on an ontology for a Sun Microsystems website. I review current research on the problems and suggest a solution. I particularly analyze the notion of role concepts, suggest an improvment of a normalisation technique which can then be used to avoid some of the role-related problems. I also present the process of creating the example Sun ontology.
Detailed record
Data and Ontologies
 Kotowski, Jakub ; Vojtáš, Peter (referee) ; Štěpánek, Petr (advisor)
In the core of current semantic web efforts is the notion of ontology. Although ontologies have been explored since times of the Greek philosopher Aristotle already there is still much to learn in this area. There are many tutorials and introductory texts both into the semantic web as whole and into its individual technologies but the learning curve is still very steep and developers have to seek answers to questions that are often topic of current research or the answer is simply not known yet. Much of these difficulties one encounters at what is often the very first step towards building a semantic web application - creating an ontology. In this work I point out some of the difficulties I encountered myself during the work on an ontology for a Sun Microsystems website. I review current research on the problems and suggest a solution. I particularly analyze the notion of role concepts, suggest an improvment of a normalisation technique which can then be used to avoid some of the role-related problems. I also present the process of creating the example Sun ontology.
Detailed record

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