Hi, all, I'm new to RDflib, I want to implement a feature like this: To say, Person hasProperty Weight(kg) , Height(m), and BMI (Body Mass Index)=Weight/Height^2, so if Bob‘s Weight=70, Height=1.75, How to deduce Bob's BMI from this model? I use the following RDF file to store the above information:
@prefix : <http://ex.org/BMI#> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . :Person rdf:type owl:Class; :hasProperty :Height, :Weight, :BMI. :OriginalProperty rdf:type owl:Class . :DerivedProperty rdf:type owl:Class . :Weight rdf:type owl:Class ; rdfs:subClassOf :OriginalProperty . :Height rdf:type owl:Class ; rdfs:subClassOf :OriginalProperty . :BMI rdf:type owl:Class ; rdfs:subClassOf :DerivedProperty ; :equalTo [:divide (:Weight [:power :Height])] . :MathOperator rdf:type owl:Class . :equalTo rdf:type owl:Class ; rdfs:subClassOf :MathOperator . :divide rdf:type owl:Class ; rdfs:subClassOf :MathOperator . :power rdf:type owl:Class ; rdfs:subClassOf :MathOperator . :Bob rdf:type owl:NamedIndividual , :Person ; :hasProperty :BMIOfBob , :HeightOfBob , :WeightOfBob . :HeightOfBob rdf:type owl:NamedIndividual , :Height ; :hasValue 1.75 . :WeightOfBob rdf:type owl:NamedIndividual , :Weight ; :hasValue 70 . :BMIOfBob rdf:type owl:NamedIndividual ,:BMI. My idea is to read all the formulas for DerivedProperty through RDFLIB, Bob's BMI was then calculated in python. Now my question is how do I read all the associated information of this blank node in "equalTo" by rdflib? Or is there a better way to implement the functionality of this model with RDF? Thank you for any help and advice. Joylix -- http://github.com/RDFLib --- You received this message because you are subscribed to the Google Groups "rdflib-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to rdflib-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rdflib-dev/006d3417-54e7-4ced-9b3a-b5f360ab837dn%40googlegroups.com.
