BUILDING BLOCK - Class of Element
| Description | Abstract Concept A Class of Element is a collection of Elements which it classifies according to one or more criteria. In knowledge representation, a Class of Element can be defined either by extension (specifying its members), or by intension (specifying criteria), using what is called "ontology" in languages like OWL. Not two Class of Elements have the same membership. However, a distinction must be made between a Class of Element having members, and those members being known, so within an information system the members recorded may change over time, even though the true membership does not change. Note: 1) SysFEAT is a higher-order ontology, so Class of Elementes may have members that are also Class of Elements (Class of Classes). 2) SysFEAT allows for self-referencing Class of Elements. |
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| External references |
 CycProject- Instances of_instances modeled via higher-order-classes,
 ISO 15926 - Class,
OMG - KerML - Type,
OMG - SBVR - Concept,
OMG - UML - Type,
OpenGroup - ArchiMate - Specialization-Relationship,
Stanford Encyclopedia of Philosophy - Non-wellfounded set theory,
SysFEAT -Semantic.pdf,
W3C - OWL - Class,
Wikipedia - Class (knowledge representation),
Wikipedia - Class (set theory),
WordNet - Class |
| Super Types | 
Element |
| Functional Domain | 
Elementary GraphThe Elementary Graph domain defines the basic constructs for relating and classifying Elements in a directed graph. |
| Dictionary |  Sandbox |
RELATIONSHIPS
Simple Graph Graph & Inheritance Table
Simple Graph
Composition: ➝ Classification: ➝ Specialization: ➝ Enumerated definition: ➝ Syntax: ➝
TEXTUAL SYNTAX
SEMANTIC TAXONOMY
Sub-Types Super-Types
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