Submissions:Types of entities Revision as of 14:03, 15 April 2008 by Admin (Talk | contribs) (→‎Example) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

General description

Name:	Types of entities
Submitted by:
Also Known As:
Intent:	To identify and categorize the most general types of things in the domain of discourse.
Domains:
Competency Questions:	What kind of entity is that? Is this an event or an object? Is this an abstract value or a quality of an entity?
Solution description:
Reusable OWL Building Block:	1 (30)
Consequences:	The type of any element of the knowledge base is always known.
Scenarios:
Known Uses:
Web References:
Other References:
Examples (OWL files):
Extracted From:	http://www.loa-cnr.it/ontologies/DUL.owl
Reengineered From:
Has Components:
Specialization Of:
Related CPs:

Elements

The Types of entities Content OP locally defines the following ontology elements:

Abstract (owl:Class) any entity that cannot be located in space-time. E.g. mathematical entities, formal semantics elements, regions within dimensional spaces, etc.

Abstract page

Event (owl:Class) any physical, social, or mental process, event, or state. More theoretically, events can be classified in different ways, possibly based on aspect (e.g. stative, continuous, achievements, etc.), or on agentivity, typical participants (e.g. human, physical, abstract, food, etc.).

Event page

Object (owl:Class) any physical, social, or mental object, or a substance.

Object page

Quality (owl:Class) any aspect of an entity (but not a part of it), which cannot exist without that entity. For example, the way the surface of a specific physical object looks like is a Quality.

Quality page

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Example

that copy of Divina Commedia is a book (Object), the porosity (Quality) of the paper used is 5 mls/min (Abstract). The Rock Music Festival (Event) is organized by a friend of mine (Object). Figure 4.2 shows the UML diagram of this scenario.