Class Hierarchy Operators

The following operators allow for the setting up of a hierarchy, the inheritance of properties, and the instantiation of class members.

ACTIVECHILD

Allows diffuse operators in structure

ALTERNATIVES

Provides flexibility in description of structure

ATTRIBUTES

Allows an object to acquire attributes - the attribute itself can be an invocation of a property of another object

COMPONENTS

An object can be comprised of a number of components - the engine of a truck

CONTAINS

A container contains objects - a building contains people, a city contains buildings

INVOCATIONS

Invocations are instantiations of a class object - Fred is an invocation of Person

MEANING1

An object may have multiple meanings (a hard drive or a drive in the country)

MEMBERGROUP

Something can have multiple alternative parents - we are not yet sure which one

MEMBERS

An object acquires properties by being a member of some class - Person is a member of Animal - the operator performs a disjoint operation on its children - they are not consistent with each other

NEWCHILD

The NEWCHILD operator can be used to respond to new connections in a structure

NOCHILD

Blocks inheritance from a parent

OBJECTGROUP

A group of objects, like "Jack and Jill" or "running and jumping".

ONLYCHILD

Modifies inheritance from below

PARENT

A placeholder that can assert or deny inheritance - used as definition of a relation parameter

RELATION1

An intransitive relation on an object - Joe arrived

RELATION2

A relation between two objects - Joe owns a house

RELATION3

A relation among three objects - Ditransitive (Joe sells Fred a house), or Causative or TransClausal (Joe told John he was afraid)

These operators are heavily used in models which interact with NLP operations.

See

Aspects of Classing

Finding Parents