Enhanced with SHOE

Dublin Core Ontology

Id:dublin-core-ontology
Version:1.0
Description:A translation of the Dublin Core element set into SHOE. The Dublin Core element set defines a set of metadata elements for cataloging library items and other electronic resources. This ontology is only an example. It is not even remotely intended for real use, and the ontology itself may change without warning. The specifics of the Dublin Core Element Set are in flux, and even as we speak, this ontology is out of date.
Contact:Sean Luke (seanl@cs.umd.edu)
Revision Date:25 Feb 2000

Organization of this Document

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). The rest of this document is divided into the following sections:

Discussion

The Dublin Core element set defines a set of metadata elements for cataloging library items and other electronic resources. Such items are known as "resources", and there exist certain relationships (Dublin Core calls these relationships "elements") between resources and other resources or data. The Dublin Core elements are: TITLE, CREATOR, SUBJECT, DESCRIPTION, PUBLISHER, CONTRIBUTOR, DATE, TYPE, FORMAT, IDENTIFIER, SOURCE, LANGUAGE, RELATION, COVERAGE, and RIGHTS.

These elements have currently been implemented in SHOE as binary relations between a Resource and a .STRING, with the following caveats and exceptions:

TITLE
...is synonymous with base.name
DESCRIPTION
...is synonymous with base.description
DATE
...is a binary relationship between a Resource and a .DATE
TYPE
...is a binary relationship between a Resource and a Type. Following one popular type collection, this ontology has defined a collection of Types that you may use in this relationship. These are automatically arranged in a hierarchy through the relation typeParent. Further, if you define that there exists a type relationship between some Resource and some Type, then it is automatically inferred that the relationship inferredType exists between that Resource and that Type, and also between that Resource and any ancestor type of Type in the hierarchy.
FORMAT
...is a binary relationship between a Resource and a Format. Dublin has not formally defined (or even suggested) a collection of Formats, so we don't define any in this ontology, though you are welcome to define some yourself.
RELATION
...is a 3-ary relationship between a Relation, and two Resources. Dublin has not formally defined (or even suggested) a collection of Relations, so we don't define any in this ontology, though you are welcome to define some yourself.

Extended Ontologies

The following ontologies are extended by the current ontology:

Renames

This ontology has renamed the following objects from other ontologies: 



Object                  Renamed From
================================================================
title                   base.name
description             base.description

Categories

The following taxonomy is the collection of categories declared in this ontology. The hierarchical form is intended to show the ISA chain. Categories in [Brackets] are not defined here but are defined in an ontology extended by this one. Elements in {Braces} are additional supercategories of the category immediately before them (signifying multiple inheritance). 



[base.Entity]
        [base.SHOEEntity]
                DublinCoreEntity 
                        Resource
                        Type
                        Format
                        Relation

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              Argument 3
==================================================================================
DUBLIN CORE RELATIONS:
creator                 Resource                .STRING
subject                 Resource                .STRING
publisher               Resource                .STRING
contributor             Resource                .STRING
date                    Resource                .DATE
type                    Resource                Type
format                  Resource                Format
identifier              Resource                .STRING
source                  Resource                .STRING
language                Resource                .STRING
relation                Relation                Resource                Resource
coverage                Resource                .STRING
rights                  Resource                .STRING

OTHER RELATIONS:
typeParent              Type (the child)        Type (the parent)
inferredType            Resource                Type

Inferences

This ontology defines some inferences which may be useful to agents:

Types are Inferred Types
If type(x,y) then inferredType(x,y)
InferredType is transitive along type parents
If inferredType(x,y) and typeParent(y,z), then inferredType(x,z)

Declarators Constants and Predefined Relations

This ontology has defined the following constants. The hierarchy implied in the constant definitions below indicates that the relational claim typeParent(child,parent) has been made between the constant and its parent constant in the hierarchy. This claim was made by the instance http://www.cs.umd.edu/projects/plus/SHOE/onts/dublin.html, which is a declarator for the ontology. 



Constant                Category
================================
Text                    Type
    Abstract            Type
    Advertisement       Type
    Article             Type
    Correspondence      Type
        Discussion      Type
        Email           Type
        Letter          Type
        Postcard        Type
    Dictionary          Type
    Form                Type
    Homepage            Type
        Organizational  Type
        Personal        Type
    Index               Type
    Manual              Type
    Manuscript          Type
    Minutes             Type
    Monograph           Type
    Pamphlet            Type
    Poem                Type
    Preprint            Type
    Proceedings         Type
    Promotion           Type
    Serial              Type
        Journal         Type
        Magazine        Type
        Newsletter      Type
        Newspaper       Type
    TechReport          Type
    Thesis              Type
        Doctoral        Type
        Masters         Type
Image                   Type
    Moving              Type
        Animation       Type
        Film            Type
    Photograph          Type
    Graphic             Type
Sound                   Type
    Ambient             Type
    Effect              Type
    Music               Type
    Narration           Type
    Speech              Type
Software                Type
    Executable          Type
    Source              Type
Data                    Type
    Numeric             Type
    Spatial             Type
    Spectral            Type
    Statistical         Type
    Structured-Text     Type
Interactive             Type
    Chat                Type
    Games               Type
    Multimedia          Type
    VR                  Type

Definitions

Not available

Notes:

Change History:

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