Ontologies

As systems that rely on domain ontologies expand, they often need to merge domain ontologies into a more general representation.

Different ontologies in the same domain arise due to different languages, different intended usage of the ontologies, and different perceptions of the domain (based on cultural background, education, ideology, etc.).

Also, simpler ontologies and semantic metadata standards are being proposed by the W3C Geo Incubator Group citation to represent geospatial data on the web.

A major innovation of the languages was to use RDF and XML for a basis, and to use RDF namespaces to organize and assist with the integration of arbitrarily many different and incompatible ontologies.

As building ontologies manually is extremely labor-intensive and time consuming, there is great motivation to automate the process.

A theory also can be ontologically committed to a class of objects if that class is populated (not necessarily by the same objects) in all its ontologies.

A theory is ontologically committed to an object only if that object occurs in all the ontologies of that theory.

At present, merging ontologies that are not developed from a common foundation ontology is a largely manual process and therefore time-consuming and expensive.

Components main Contemporary ontologies share many structural similarities, regardless of the language in which they are expressed.

During the 1970s many programmers began to write 'conceptual ontologies', which structured real-world information into computer-understandable data.

Examples of applications In general, ontologies can be used beneficially in * enterprise applications.

However, it has been employed as a linguistic tool for learning domain ontologies. citation Hybrid ontology The Gellish ontology is an example of a combination of an upper and a domain ontology.

In automated ontologies the links are computed vectors without explicit meaning.

In philosophy a "theory is ontologically committed to an object only if that object occurs in all the ontologies of that theory" Background The sentence “Napoleon is one of my ancestors” apparently commits us only to the existence of two individuals (i.

In Proc. of the AAAI-2002 Workshop on Ontologies and the Semantic Web, Edmonton, Canada.

It provides an extended critique of event-ontologies and idealist metaphysics.

Ontologies can of course be written down in a wide variety of languages and notations (e.

Rather than indexing web sites and pages via keywords, the semantic web creates large ontologies of concepts.

Since domain ontologies represent concepts in very specific and often eclectic ways, they are often incompatible.

Supports creation of communities where members can collaboratively import, create, discuss, document and publish ontologies.