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A systematic arrangement of all of the important categories of objects or concepts which exist in some field of discourse, showing the relations between them. When complete, an ontology is a categorization of all of the concepts in some field of knowledge, including the objects and all of the properties, relations, and functions needed to define the objects and specify their actions. A simplified ontology may contain only a hierarchical classification (a taxonomy) showing the type subsumption relations between concepts in the field of discourse. An ontology may be visualized as an abstract graph with nodes and labeled arcs representing the objects and relations.
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(32NN) A model of how to specify a subject area of interest in which concepts, their attributes, and relationships (associations between concepts) are explicitily named and distinguished. Constraints stipulate distinctions that differentiate concepts, governing how they participate in relationships, and how implicit knowledge is made explicit through qualifiers that allow inferencing over relationships properties. A standard language for representing an ontology on the web is the W3C standard OWL. (329E) See W3C Semantic Web Website (329F)
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A vocabulary and set of agreed upon definitions to describe a subject domain. The general subject area of reactive, real-time systems does not have an ontology. However, the various subfields all have their own ontologies. e.g., this glossary. Note that this definition is a good bit narrower than what a philosopher would likely take to be an ontology.
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The creation of a systematically ordered data structure that enhances exchange of information between computers and scientists. Ontologies enable the definition and sharing of domain-specific vocabularies.
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In informatics an "ontology" is an organized collection of concepts.
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The science of being in its most general aspects.
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Questions of existence. Do mathematical objects exist? If so, in what sense? If not, why do we talk about them
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a model of the world; an ontology defines the ways in which concepts are related, their relative significance, and their dependencies. The most significant relationship between concepts in the ontology is that of "hyponym/hypernymy" which determines if a concept belongs to the class defined by another concept.
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A partial specification of a conceptual vocabulary to be used for formulating knowledge-level theories about a domain of discourse. The fundamental role of an ontology is to support knowledge sharing and reuse.
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a classification methodology defines a common vocabulary in a structured way for useful information sharing
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a classification scheme with more semantics added
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a classification system for concepts and their underlying connections within a specific domain of knowledge
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a collection of concepts or terms of a given domain of knowledge/area of existence and semantics describing these concepts and the relationships between the concepts
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a collection of definitions that describe computer-usable concepts (and either introduce the vocabulary of terms that rely on them) in the perspective of representing a domain, i
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a collection of domain concepts and their relationships
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a collection of terms and formulas designed to facilitate interoperation among information systems (web sites)
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a commitment to (or a formal declaration of) what exists in any particular task domain
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a comprehensive set of concepts that describe a particular domain, together with the definition of the concepts and the relationships between the concepts
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a conceptual framework for defining the basic classes of entities in some domain of knowledge, the relationships these entities have to each other, and the organization of concepts in terms of higher-level concepts, typically taxonomic in nature
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a conceptual model of the concepts in a domain of interest
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a controlled vocabulary, and clear, simple relationships among its terms Dictionaries give relationships among terms
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a description (like a formal specification of a program) of concepts and relationships that can exist for an agent or a community of agents
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a description of all that exists for the domain that it covers
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a description of knowledge about a subject using a controlled vocabulary of terms and defined relationships between those terms
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a description of the concepts and inter-concept relationships of some problem domain
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a description of the kinds of things, both physical and conceptual, that make up a given domain and the relationships among them as represented by the terminology in that domain
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a description of the types of objects that we think about when we make decisions and solve problems in a domain of interest
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a dictionary/vocabulary
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a document that describes a vocabulary of terms for communication between (human and) automated agents
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a domain metamodel that will be used by the different models related to that particular domain
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a domain of knowledge structured through formal rules so that it can be interpreted and used by computers
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a domain vocabulary complete with a set of precise definitions, or axioms, that constrain the meanings of the terms in that vocabulary sufficiently to enable consistent interpretation of data
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a explicit knowledge level specification of a conceptualization, (
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a file that formally defines relations among terms, for example, a taxonomy and set of inference rules
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a formal description of a set of concepts and their relationships to each other
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a formal description of concepts and relationships among them
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a formal description of entities and their properties for a given domain
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a formal description of entities and their properties, relationships, constraints, behaviours
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a formal description of objects and their interrelationships
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a formal description of the entities within a given domain, the properties they possess, the relationships they stand in, the constraints they are subject to, and the patterns of behavior they exhibit
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a formal description of the semantics of a representation system, not only what a specific term means, but what its behavior is in the world described
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a formal explicit description of concepts or classes in a domain of discourse, properties of each class describing various features and attributes of the classes, and restrictions on property values
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a formal, explicit representation of the conceptual structure of a field of knowledge
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a formal, explicit specification of a shared conceptualization " proposed by T
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a formalization of how individuals understand the world and the way people see things, Fonseca said
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a formalization of someone's conceptual understanding of a domain
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a formally specified set of vocabulary definitions
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a formal method of capturing knowledge about some domain of interest
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a formal model of the kinds of concepts and objects that appear in the real world, together with the relationships between them
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a formal representation of knowledge about area of interest
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a 'formal specification of a conceptualization' and thus, provides a basis for semantics-based processing of XML documents
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a formal specification of the categories of things that exist or may exist in some domain
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a formal way to organize knowledge and terms
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a hierarchically organized complex data structure that provides a context for the lexical meaning of concepts
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a hierarchically structured set of terms for describing a domain that can be used as a skeletal foundation for a knowledge base
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a list of formal terms, i
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a logical theory accounting for the intended meaning of a formal vocabulary, i
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a long-lived conceptual model that can be used in multiple applications, providing good opportunities for reuse and interoperability
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a machine-readable representation of a domain's terminology and the relationships among the terms in the domain
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a model of entity and relationship in a specific domain or universe of discourse (UoD)
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a network of concepts, relationships, and constraints that provide context for data and information as well as processes
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an explicit formal specification of the terms in the domain and relationships among them
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an explicit, partial account of a conceptualization
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an explicit, partial specification of a conceptualization that is expressible as a meta-level viewpoint on a set of possible domain theories for the purpose of modular design, redesign and reuse of knowledge-intensive system components
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an explicit representation of a conceptualization
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an explicit specification of a conceptualisation
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a representation of a shared conceptualization of a domain
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a rule-based grouping of some portion of a t