The Photo Access Control Ontology

Introduction

The photo access control ontology is designed to describe things relevant to the photo access control project. The XML Namespace URI of the ontology is:

The PAC ontology makes use of or extends the following existing ontologies.

The following diagram describes the relations between different classes in the PAC ontology and in other ontologies.


Figure 1. The Photo Access Control Ontology

Classes

PhotoAlbum

A photo album acts as a container of photos. It is a subclass of rdf:Class.

AccessEvent

An access event is one in which a user tries to access a photo in a photo album. It binds the user and the photo together. A reasoner will determine whether an access event is compliant with the access control policy attached to the photo album.


Properties

hasTagging

This property is used to describe the situation in which a photo is associated with a tagging. A tagging binds together a photo, one or more tags, and the user who assigns the tags. A photo can have one or more tagging associated with it.

Domain: http://purl.org/dc/terms/Image
Range: http://www.holygoat.co.uk/owl/redwood/0.1/tags/tagging

Contains

This property is used to describe the situation in which a photo album contains one or more photos.

Domain: #PhotoAlbum
Range: http://purl.org/dc/terms/Image

ACRules

This is a property used to describe the situation in which some access control rules (written in AIR) are associated with a photo album.

Domain: #PhotoAlbum
Range: ttp://dig.csail.mit.edu/TAMI/2007/amord/air#Policy

Owner

Describes the owner of a photo album.

Domain: #PhotoAlbum
Range: http://xmlns.com/foaf/0.1/Person

OwnerFlickrID

Describes the Flickr ID of the owner of a photo album.

Domain: #PhotoAlbum
Range: http://www.w3.org/2000/01/rdf-schema#Literal

AccessPerson

Specify the user who tries to access a photo in an AccessEvent.

Domain: #AccessEvent
Range: http://xmlns.com/foaf/0.1/Person

AccessedPhoto

Specify the photo being viewed by the viewer in an AccessEvent

Domain: #AccessEvent
Range: http://purl.org/dc/terms/Image



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