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Fact ontologies present a different approach by focusing on how entities belonging to different categories come together to constitute the world. Facts, also known as states of affairs, are complex entities; for example, the fact that the Earth is a planet consists of the particular object the Earth and the property being a planet .
Ontology Design Patterns portal [73] is a wiki repository of reusable components and practices for ontology design, and also maintains a list of exemplary ontologies. Protégé Ontology Library [74] contains a set of OWL, Frame-based and other format ontologies. SchemaWeb [75] is a directory of RDF schemata expressed in RDFS, OWL and DAML+OIL.
as by definition as part one of {4.0L engine, 4.6L engine} The value of an attribute can be a complex data type; in this example, the related engine can only be one of a list of subtypes of engines, not just a single thing. Ontologies are only true ontologies if concepts are related to other concepts (the concepts do have attributes).
Such ontologies must therefore consist of terms expressing very general concepts, but such concepts are so basic to our understanding that there is no way in which they can be defined, since the very process of definition implies that a less basic (and less well understood) concept is defined in terms of concepts that are more basic and so ...
Example of a constructed MBED Top Level Ontology based on the nominal set of views. [1]In computer science, information science and systems engineering, ontology engineering is a field which studies the methods and methodologies for building ontologies, which encompasses a representation, formal naming and definition of the categories, properties and relations between the concepts, data and ...
Ontologies can be used for structuring data in a machine-readable manner. [14] In this context, an ontology is a controlled vocabulary of classes that can be placed in hierarchical relations with each other. [15] These classes can represent entities in the real world which data is about.
Social ontology is a branch of ontology.Ontology is the philosophical study of being and existence; social ontology, specifically, examines the social world, and the entities that arise out of social interaction.
In computer science and artificial intelligence, ontology languages are formal languages used to construct ontologies.They allow the encoding of knowledge about specific domains and often include reasoning rules that support the processing of that knowledge.