owl

问题 Is there any tool to quickly get a relational database from an owl ontology? 回答1: OWL2ToRDB is a Protégé plugin that can convert an owl ontology into RDB. 来源： https://stackoverflow.com/questions/43762837/convert-an-owl-ontology-into-a-relational-database

问题 Using Protege and SWRL tab, I have the ontology mentioned hereinafter. It is composed of the Class Test and the class Shadow , where Test has three individuals t1, t2, t3 . I was trying to define an SWRL rule that creates an individual of Shadow class for each existing individual of Test , the rule is Test(?x) ^ swrlx:makeOWLThing(?new, ?x) -> Shadow(?new) QUESTIONS: Only one individual of Shadow , named fred is created, instead of three (corresponding to t1, t2, t3 ). How to control the

问题 In my ontology, I have two individuals of type abc:Invention : abc:InventionA rdf:type abc:Invention . abc:InventionB rdf:type abc:Invention . and 2 individuals of type abc:MarketSector , linked with an object property abc:includedIn : abc:MrktSctrA rdf:type abc:MarketSector . abc:MrktSctrB rdf:type abc:MarketSector . abc:MrktSctrB abc:includedIn MrktSctrA . Currently, InventionA and InventionB are linked with, respectively MrktSctrA and MrktSctrB via an object property abc:targets : abc

问题 I'm using RDF4J Workbench 2.1.2. System Information Application Information Application Name RDF4J Workbench Version 2.1.2 Runtime Information Operating System Windows 10 10.0 (amd64) Java Runtime Oracle Corporation Java HotSpot(TM) 64-Bit Server VM (1.8.0_111) Process User gwcox Memory Used 315 MB Maximum 889 MB I have a set of RDF files containing ontologies I'm working on. Some RDF files import others. For example, my instantiations ontology/RDF file imports the several ontologies defining

问题 I defined class RoadSegment and datatype property hasRoadNumber . So, now I want to define class Road and state that a Road is a set of RoadSegments with the same road number. How it can be done? 来源： https://stackoverflow.com/questions/57937212/how-to-define-a-class-road-to-be-equivalent-to-a-set-of-objects-with-the-same-va

问题 Let's say for example: -Food(class -Bread(instance of Food! -Species(class -Animal(class - Horse(class -Unicorn(instance Now I need to be able to set Bread -> eatableBy -> Horse. But I can't make a object property assertion to a class. So I could set it eatable by and add all the instances of Horse, but I have a lot of instances so that would be a bit redundant. Does anybody know a good efficient way to do achieve the same effect? E.g. If I need to know what Horses can eat it needs to return

问题 I am a geographer and a new comer in the field of ontology trying to make sense out of these two. Therefore, I have created a simple ontology, as follows: Thing Feature Lane Segment(equivalent to Arc) Geometry Arc (equivalent to Segment) Node Dangling_Node Intersection_node you can find the .owl file here instantiated with a very simple spatial road dataset (fig1). the ontology is consistent without and with instances, but when I run the reasoner, the Dangling_node instances (nodes that are

问题 How to express: Barack doesn’t like anything that Donald likes. in Protege? My attempt: I have Barack and Donald as individuals and like as a property , however, when clicking on Barack , the best I can get is: Barack like Donald which is not good. Any ideas? The answer appears to not be working. 回答1: In the individuals tab, where you can assert the type (not object property assertion) of an individual, you write (for Barack): likes only (not (inverse likes value Donald)) or likes only (not

问题 I am storing some data in my ontology model made in protege with help of a SPARQL UPDATE 'insert' operation. Below is the update query. PREFIX test: <http://www.semanticweb.org/muhammad/ontologies/2017/2/untitled-ontology-14#> insert { [] test:Kpi_Variable ?s ; test:hasValue_ROB4 ?p ; test:hasTime ?now . } where { values (?s ?p) { (test:Actual_Production_Time 33) } bind (now() as ?now) } It stores in the rdf graph in the following way: [ test:Kpi_Variable test:Actual_Production_Time ; test

问题 I am working with OWL ontology and I have to import an owl ontology into OrientDB graph database. Is there a solution implemented to parse OWL ontology and map it to a OrientDB Graph or convert owl ontology to labeled property graph and import it into OrientDB? I know there are similar solutions for Neo4J graph database. https://github.com/flekschas/owl2neo4j https://neo4j.com/blog/using-owl-with-neo4j/ For OrientDB? 来源： https://stackoverflow.com/questions/46581663/mapping-from-owl-ontology