One question that still lingers in my head, which would use my ontology? Currently I use a model and store in the database, but at no time use the ontology development.
2013/10/2 Márcio Vinicius <[email protected]> > Okay, so I'll have to make all the rules in java? I'll have to check if > the Learning Object already has a value for the property name? > > Thus no sense to create an ontology, since the idea is to generate a > database with the rules of the ontology (properties: inverse, transitive, > functional, etc.) where I can use a reasoner such as Pellet and generate > inferences. > > carefully. > > > 2013/10/2 Ralph Perniciaro <[email protected]> > >> Thanks for the explanation. Working with ontologies is certainly a >> different way of thinking, but I understand what you are saying. >> >> >> On Wed, Oct 2, 2013 at 1:10 PM, Chris_Dollin <[email protected]> >> wrote: >> >> > On Wednesday, October 02, 2013 10:47:45 AM Ralph Perniciaro wrote: >> > > I believe that I have the same issue. If I create an ontology in >> protege >> > > and define an entity to have a property called title and specify that >> it >> > > should have exactly 1 title. If I load the model into Jena and then >> > create >> > > an individual of my entity type, I can add more than 1 title to the >> > > individual. I was going to add my own checks to prevent this, unless >> > > someone can explain how Jena can enforce cardinality rules. >> > >> > Jena doesn't enforce cardinality rules, except in the sense that you >> > can run validation checks to make sure the model is consistent. >> > But note that if C is some class with a restriction that P has exactly >> > one value, and you assert >> > >> > c rdf:type C >> > c P a >> > c P b >> > >> > then you haven't violated a cardinality rule; you've asserted that >> > >> > a owl:sameAs b >> > >> > which may or may not be generated by the inference you're using. >> > >> > (Since `title` is probably string-valued, it's a little trickier, "of >> > course".) >> > >> > If you want on-the-fly cardinality checks in Jena you can always >> > write them youself. That way you can be as pragmatic as you please. >> > >> > Chris >> > >> > >> > >> > >> > >> > > > > -- > *Márcio Vinícius Oliveira Sena* > Bacharelando em Sistemas de Informação - UFG > Desenvolvedor Front-end no Laboratório de Tecnologia e Mídias Educacionais > - Labtime/UFG > Gerente de Projeto e Desenvolvedor Front-end > @marciosena17 <http://twitter.com/marciosena17> > > -- *Márcio Vinícius Oliveira Sena* Bacharelando em Sistemas de Informação - UFG Desenvolvedor Front-end no Laboratório de Tecnologia e Mídias Educacionais - Labtime/UFG Gerente de Projeto e Desenvolvedor Front-end @marciosena17 <http://twitter.com/marciosena17>
