Protégé4 本体入门.pptVIP

 Protégé窗口展示 OWL本体的重要组成部分 创建一个OWL本体pizza.owl OWL Properties Describing And Defining Class Protégé窗口展示 OWL本体的重要组成部分 Individuals Properties Classes Individuals Individuals, represent objects in the domain in which we are interested Individuals are also known as instances.Individuals can be referred to as being‘instances of classes’ . Properties Classes Classes may be organised into a superclass-subclass hierarchy, which is also known as a taxonomy（分类）. Subclasses specialise their superclasses. One of the key features of OWL is that these superclass-subclass relationships (subsumption relationships) can be computed automatically by a reasoner 创建一个OWL本体 Create a new OWL Ontology Add a comment to the ontology Named Classes Disjoint Classes Using Create Class Hierarchy To Create Classes Create a new OWL Ontology Every ontology is named using a Unique (URI). Replace the default URI with /ontologies/pizza.owl press `Next. Add a comment to the ontology A pizza ontology that describes various pizzas based on their toppings Named Classes Disjoint Classes Using Create Class Hierarchy To Create Classes 三种Properties说明 Create an object property called haslngredient hasTopping HasBase Create hasTopping and hasBase as sub-properties of haslngredient Object Properties的介绍 OWL Properties Create hasTopping and hasBase as sub-properties of haslngredient(27) Property Characteristics Inverse Properties(反向关系) Functional Properties Inverse Functional Properties Transitive[传递] Properties Symmetric[对称] Properties Antisymmetric[反对称] Properties Reflexive[反身、自反] Properties Irreflexive Properties Property Domains and Ranges Inverse Properties Create some inverse properties Functional Properties Inverse Functional Properties Transitive Properties Symmetric Properties Make the haslngredient property transitive make the haSBaSe property functional Antisymmetric Properties Reflexive Properties Irreflexive Properties Property Domains