Thanks Dave and Lorenz for your response. What if we have entered the score for a student in Cryptography and SoftwareEngineering and did not entered for Networking subject and stored something like this in our owl file:
Student1 Name: Bob CryptographyScore: 60 SoftwareEngineeringScore: 80 //NetworkingScore, not mentioned here Then will the above rule fires? On Wed, Jan 4, 2017 at 11:35 AM, Lorenz B. < [email protected]> wrote: > Inline comments: > > I have three subjects marks for a student. > > Cryptography, Networking, Software Engineering with different marks for > > each student. > > I want to calculate in which subject a student got maximum marks using > Jena > > rule and will set that subject as HighScoreSubject of the student ( > > HighScoreSubject is data propety) whose values will be one of these three > > subjects. > > > > Is this rule correct to get the required result ( I am asking this > because > > I am not getting the result required) > Without seeing the data, it's always difficult to say if something is > correct or not. Sample data makes things easier. > And without knowing how you apply the rules (in a correct syntax) it's > even harder. That means, it's always good to show the relevant code. > > > > ?x rdf:type std:Student + ?x std:CryptographyScore ?score1 + ?x > > std:NetworkingScore ?score2 + ?x std:SEScore ?score3 + > > greaterThan(?score1,?score2), greaterThan(?score1, ?score3) --> > > ?x std:HighScoreSubject std:Cryptography > > > This rule covers only the case when the score for Cryptography is the > highest. If your data doesn't contain a student that matches the rule, > nothing will happen. > > > Cheers, > Lorenz > > -- > Lorenz Bühmann > AKSW group, University of Leipzig > Group: http://aksw.org - semantic web research center > > >
