S H O E : Simple HTML Ontology Extensions

SHOE Base Ontology

Name: base-ontology
Version: 1.0

This ontology is declared in this document both in human-readable form (what you see in front of you now) and machine-readable SHOE form (which you can see from viewing the html source of this document) . This base ontology is compatible with version 1.0 of SHOE.

Declared Types

This ontology declares four basic types, listed below along with their description.

STRING: HTML String Literals, as defined in the HTML 2.0 specification.
NUMBER: Floating-point numerical constants. Knowledge-agents should be able to read common floating-point numbers like 2, 2.0, -1.432e+4 , etc. Numbers may be of the form,
[+|-] ((digit+ ['.' digit+]) | ('.' digit+)) [((e|E)[+|-]digit+)] This rather liberal form should be readable by the C scanf command if it is read as a float.
DATE: Date/Timestamps following RFC 1123, as shown in section 3.3.1 of the HTTP/1.0 specification.
TRUTH: HTML String Literals of the form YES or NO , case-insensitive.

ISA Hierarchy (Taxonomy)

The following taxonomy is the collection of categories declared in this ontology. The hierarchical form is intended to show the ISA chain.

       Entity
                SHOEEntity

Notes:

Entity: The top level of all SHOE classifications. You should not subclass from Entity--usually you should subclass from SHOEEntity or one of its subclasses instead. Entity exists to give the base ontology some flexibility for later versions.
SHOEEntity: This should be the root (ancestor) category for all categories declared in SHOE ontologies (other than the Base Ontology). All categories are best hung off of SHOEEntity or a subcategory.

Relationships

Relationships are declared between one or more arguments. Relationship arguments are either types or are categories. If the argument is a category, any subcategory of that category is valid as well.

Relation             Argument 1           Argument 2
==========================================================
description          Entity               STRING
name                 Entity               STRING

Notes:

description: This is a human-readable description of a particular instance.
name: This is a human-readable name for a particular instance.

Note that STRING is used without a period (as in " .STRING ") because this is the base ontology, where it is declared. In other ontologies you make, you should use the period or a full prefix chain to refer to it and other types, relations, and categories declared in the base ontology.