no.. i'm not merging......... i need to say that address can also be a subclass of ont2's employee class. for that what i have to do?
On Tue, Apr 16, 2013 at 11:42 AM, davejrdn <[email protected]> wrote: > An address is NOT a subclass of an Employee, you are confusing the isA and > hasA > relationships. Do you have any control over the definition of ont1 and > ont2? Or > are you just trying to use these together? Will instances be defined in > both > Employee classes, for ont1 and ont2? Will a given instance ever be defined > directly as a ont1.Employee and an ont2.Employee? It really sounds like > you are > trying to merge data from two different data sources. Are you? > > > > > ________________________________ > From: aarthi <[email protected]> > To: users <[email protected]> > Sent: Tue, April 16, 2013 2:24:30 PM > Subject: Re: isA relation in jena > > hi.. i'll say clearly now... ont1 and ont2 are two ontologies created using > protege. consider both ontology have a class named employee. but there is a > class named address present in ont1 only... > > > Employee class is similar in both ontology. but address is present only in > ont1, as there is a class named employee in ont2, we can say that address > can also be a subclass of ont2. for this i need to create address isA > subclass of Employee(ont2) > > > On Tue, Apr 16, 2013 at 7:41 AM, Ian Dickinson <[email protected]> > wrote: > > > On 16/04/13 14:32, aarthi wrote: > > > >> sorry for the confusion... here in my ontology i include both the > >> classes and properties. and consider a class address is a subclass for > >> ont1(address is taken instead of john). now i haveto map address isA > >> subclass of ont2's Employee class. > >> > > This isn't adding much clarity, I'm afraid. Let me re-state the problem > > to see if that helps - > > > > You have two ontology classes: > > > > ont1:Address > > ont2:Address > > > > You want to assert that ont2:Address is a sub-class of ont1:Address (i.e, > > every instance of an ont1:Address is also an instance of an > ont2:Address). > > You need to add the triple: > > > > ont2:Address rdfs:subClassOf ont1:Address > > > > which you can do via the OntClass API, as I showed in the code sample > gist > > that I put in my previous message. > > > > The only other question is *where* you assert this new triple. And that > is > > entirely dependent on what you want to do with the ontologies and > mappings > > you are creating. It's not really possible to give advice on how to > > structure your Jena models without some sense of what you are trying to > > achieve. > > > > It would probably be helpful if you thought about the next steps of your > > project in BDD terms, by creating some given/when/then user stories. For > > example (and I'm making this up, you'll need to write your own): > > > > Given: a triple store containing data from one list of customers using > > terms only from ontology 1 > > And: a mapping between ontology 1 and ontology 2 > > When: the user runs a SPARQL query using terms from ontology 2 > > Then: the displayed results include the corresponding resources from the > > triple store > > > > If you can get clear in your mind what problem you're trying to solve, > > then you'll be able to see potential solutions more clearly, and you'll > be > > able to ask clearer questions that we can give you more help with. > > > > Ian > > > > >
