Updating datatype property value base on SWRL rules - sparql

Question

Hi i have made an ontology in protege 4.3 for users , suppose 1 of my ontology subclass of class user are:
1-"Interest" , and class "interest" have subclasses: "onlineGaming","onlineMovie","onlineshoping",... and every subclass has individual: everyday,onceAweek,onceAmonth)
and i have 3 datatype property for every user: (internetspeed,internetTraffic,Price)
data gathered based on a questionnaire
i just need to infer from this ontology how important this 3 datatype property factors is for internet users
i need to make some SWRL rules in protege to Infer user interest weight , for example if a user do onlineMovie everyday add a +3 to internetTraffic dataproperty.
user(?u) ^ hasOnlineMovieInterest(?u , everyday)-> add +3 to user(?u,InternetTraffic)
user(?u) ^ hasOnlineGamingInterest(?u , OnceAweek) and hasOnlineMovieInterest(?u , everyday)-> add +2 to user(?u,internetSpeed)
how should i write this properly in SWRL rules?
and my second question is how can i have the value of this 3 datatype property for every user in sparql and save the result?
Thanks for your help

Answer 1

First of all; it is not clear what you are doing / which technology using, etc., please consider clarifying your question. Moreover, the conceptual made you developed doesn't seem sound. Are you sure this is the best way to represent the information you want? For example, why would a UserInterest be a subClassOf User? I think you mean that UserInterest and UserInterestRate are ranges for an object property that connect User to them, i.e., hasInterest rdfs:domain User and hasInterest rdfs:range UserInterest.
Coming to your questions, do you use Protege? If you use it you can implement these SWRL rules using the SWRL tab in Protege.
After you have implemented this correctly, you can simply use some SPARQL query similar to:
select ?user ?r1 ?r2 ?r3 Where {
?user rdf:type yourNamespacePrefix:User.
?user yourNamespacePrefix:rate1 ?r1.
?user yourNamespacePrefix:rate2 ?r2.
?user yourNamespacePrefix:rate3 ?r3.
}