Extraire des informations d'une ontologie OWL-S

**marwa_marwa** · 29/01/2013, 22h21

Bonsoir, je voudrais extraire des information à partir d'une ontologie owls (c'est à dire contenant un service web annoté sémantiquement) que j'ai trouvé en ligne (lien : http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl ). J'ai procédé ensuite à à la traduction de l'ontologie vers RDF pour que je puisse extraire les informations que je veux à partir d'une requête SPARQL dont le code est le suivant:

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:process="http://www.daml.org/services/owl-s/1.1/Process.owl#"
    xmlns:service="http://www.daml.org/services/owl-s/1.1/Service.owl#"
    xmlns:list="http://www.daml.org/services/owl-s/1.1/generic/ObjectList.owl#"
    xmlns:owl="http://www.w3.org/2002/07/owl#"
    xmlns:mind="http://www.mindswap.org/2004/owl-s/1.1/MindswapProfileHierarchy.owl#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
    xmlns:profile="http://www.daml.org/services/owl-s/1.1/Profile.owl#"
    xmlns:grounding="http://www.daml.org/services/owl-s/1.1/Grounding.owl#"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" > 
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#Currency">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Input"/>
    <rdfs:label>Output Currency</rdfs:label>
    <process:parameterType rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">http://www.daml.ecs.soton.ac.uk/ont/currency.owl#Currency</process:parameterType>
  </rdf:Description>
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookName">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Input"/>
    <rdfs:label>Book Name</rdfs:label>
    <process:parameterType rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">http://www.w3.org/2001/XMLSchema#string</process:parameterType>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A0">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Perform"/>
    <process:process rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookFinder.owl#BookFinderProcess"/>
    <process:hasDataFrom rdf:nodeID="A1"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceService">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Service.owl#Service"/>
    <service:describedBy rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceProcess"/>
    <service:supports rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceGrounding"/>
    <service:presents rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceProfile"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A2">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#InputBinding"/>
    <process:toParam rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BNPrice.owl#BookInfo"/>
    <process:valueSource rdf:nodeID="A3"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A4">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Perform"/>
    <process:process rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/CurrencyConverter.owl#CurrencyConverterProcess"/>
    <process:hasDataFrom rdf:nodeID="A5"/>
    <process:hasDataFrom rdf:nodeID="A6"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceProcess">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#CompositeProcess"/>
    <service:describes rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceService"/>
    <process:hasInput rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookName"/>
    <process:hasInput rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#Currency"/>
    <process:hasOutput rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPrice"/>
    <process:composedOf rdf:nodeID="A7"/>
    <process:hasResult rdf:nodeID="A8"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A9">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#OutputBinding"/>
    <process:toParam rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPrice"/>
    <process:valueSource rdf:nodeID="A10"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A1">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#InputBinding"/>
    <process:toParam rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookFinder.owl#BookName"/>
    <process:valueSource rdf:nodeID="A11"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A7">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Sequence"/>
    <process:components rdf:nodeID="A12"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A6">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#InputBinding"/>
    <process:toParam rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/CurrencyConverter.owl#OutputCurrency"/>
    <process:valueSource rdf:nodeID="A13"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A14">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Perform"/>
    <process:process rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BNPrice.owl#BNPriceProcess"/>
    <process:hasDataFrom rdf:nodeID="A2"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A15">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ControlConstructList"/>
    <list:first rdf:nodeID="A4"/>
    <list:rest rdf:resource="http://www.daml.org/services/owl-s/1.1/generic/ObjectList.owl#nil"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceProfile">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Profile.owl#Profile"/>
    <rdf:type rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/MindswapProfileHierarchy.owl#BookInformationService"/>
    <service:presentedBy rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceService"/>
    <profile:serviceName xml:lang="en">Book Price Finder</profile:serviceName>
    <profile:textDescription xml:lang="en">Returns the price of a book in the desired currency. First the ISBN number for the given book is found and then this ISBN number is used to get the prive of the book from Barnes &amp; Nobles service.</profile:textDescription>
    <profile:hasInput rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookName"/>
    <profile:hasInput rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#Currency"/>
    <profile:hasOutput rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPrice"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A5">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#InputBinding"/>
    <process:toParam rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/CurrencyConverter.owl#InputPrice"/>
    <process:valueSource rdf:nodeID="A16"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A17">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ControlConstructList"/>
    <list:first rdf:nodeID="A14"/>
    <list:rest rdf:nodeID="A15"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A8">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Result"/>
    <process:withOutput rdf:nodeID="A9"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A3">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ValueOf"/>
    <process:fromProcess rdf:nodeID="A0"/>
    <process:theVar rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookFinder.owl#BookInfo"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A11">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ValueOf"/>
    <process:fromProcess rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#TheParentPerform"/>
    <process:theVar rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookName"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A12">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ControlConstructList"/>
    <list:first rdf:nodeID="A0"/>
    <list:rest rdf:nodeID="A17"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A10">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ValueOf"/>
    <process:fromProcess rdf:nodeID="A4"/>
    <process:theVar rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/CurrencyConverter.owl#OutputPrice"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceGrounding">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Grounding.owl#WsdlGrounding"/>
    <grounding:hasAtomicProcessGrounding rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/CurrencyConverter.owl#CurrencyConverterProcessGrounding"/>
    <grounding:hasAtomicProcessGrounding rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BNPrice.owl#BNPriceProcessGrounding"/>
    <grounding:hasAtomicProcessGrounding rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookFinder.owl#BookFinderProcessGrounding"/>
    <service:supportedBy rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPriceService"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl">
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Ontology"/>
    <owl:imports rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookFinder.owl"/>
    <owl:imports rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BNPrice.owl"/>
    <owl:imports rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/CurrencyConverter.owl"/>
    <owl:imports rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/MindswapProfileHierarchy.owl"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A16">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ValueOf"/>
    <process:fromProcess rdf:nodeID="A14"/>
    <process:theVar rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BNPrice.owl#BookPrice"/>
  </rdf:Description>
  <rdf:Description rdf:nodeID="A13">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#ValueOf"/>
    <process:fromProcess rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#TheParentPerform"/>
    <process:theVar rdf:resource="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#Currency"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://www.mindswap.org/2004/owl-s/1.1/BookPrice.owl#BookPrice">
    <rdf:type rdf:resource="http://www.daml.org/services/owl-s/1.1/Process.owl#Output"/>
    <rdfs:label>Output Price</rdfs:label>
    <process:parameterType rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">http://www.mindswap.org/2004/owl-s/concepts.owl#Price</process:parameterType>
  </rdf:Description>
</rdf:RDF>

Je veux maintenant extraire le nom du service suivant : Book Name celui compris entre les deux balises

Code :

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<rdfs:label>Book Name</rdfs:label>

et extraire également l'input (BookName) et l'ouput (BookPrice) du service en question.

Comment peut-on faire cela avec une requête SPARQL?

Merci d'avance

**marwa_marwa** · 29/01/2013, 22h26

Pour tester, je voulais afficher le nom du service avec la requete suivante:

Code :

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		String queryString ="SELECT * WHERE { ?Service <http://www.daml.org/services/owl-s/1.1/Service.owl#Service> ?Service . }";

ça m'affiche toutefois rien comme résultat

**Metafire18** · 30/01/2013, 11h14

Bonjour,

Tout d'abord, si vous souhaitez acquérir des bases dans l'utilisation du langage SPARQL, je vous invite à consulter ce tutoriel.

La requête que vous avez proposé signifie que vous souhaitez obtenir tous les triplets ayant un sujet et un objet identique (vous utilisez le paramètre ?Service à deux reprises) et ayant pour propriété service:Service. Au regard de votre ontologie, je ne suis pas étonné que vous n'obteniez rien en retour de cette requête

Extraire des informations d'une ontologie OWL-S

SPARQL

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