This specification describes a formal vocabulary to represent preferences, contexts and profiles in
the EzWeb project. The aim of this ontology is to provide
the main design patterns to formalize demands in OWL language.
1. Introduction
The user context explotation seems to be essential in order to generate customised suggestions based on the user profile. This ontology includes the conceptual model of the user context in the EzWeb platform. Under a normative namespace:
http://ontologies.ezweb.morfeo-project.org/ezcontext/ns#
using content negotiation and following the best practice recipes [RECIPES],
it can access to a human-readable specification (this document) and to a
small RDF Vocabulary with formal definition of the terms used.
2. EzContext ontology at a glance
An alphabetical index of EzContext terms, by class (concepts) and by property
(relationships, attributes), are given below. All the terms are hyperlinked
to their detailed description for quick reference.
Classes: CompositePreference, Context, Demand, Filter, ModalDescription, Operator, Pattern, Preference, UserProfile,
Properties: andComposition, asksFor, desireTowards, excludedPreference, filter, inContext, internallyRepresents, negativePreference, notDesireTowards, operator, positivePreference, refinedBy, requiredPreference, sets, unionComposition, utilityValue,
3. EzContext ontology overview
The EzContext definitions presented here are the formalization of the context inside EzWeb platform. As context we refer to profiles
and preferences that a user can use in a concrete moment and situation (his context).
3.1. Example
Here is a very basic document describing a user profile:
<ezc:UserProfile rdf:ID="http://example.org/ExampleProfile">
<ezc:desireTowards rdf:resource="http://ontologies.ezweb.morfeo-project.org/ezc/var/Var1" />
<ezc:desireTowards rdf:resource="http://ontologies.ezweb.morfeo-project.org/ezc/var/Var2" />
<ezc:askFor rdf:resource="http://example.org/ExampleDemand"/>
</ezc:UserProfile>
<ezc:Demand rdf:ID="http://example.org/ExampleDemand">
<ezc:requiredPreference rdf:resource="http://ontologies.ezweb.morfeo-project.org/ezc/var/Var1"/>
<ezc:positivePreference rdf:resource="http://ontologies.ezweb.morfeo-project.org/ezc/var/Var2"/>
</ezc:Demand>
<ezc:Preference rdf:about="http://ontologies.ezweb.morfeo-project.org/ezc/var/Var1">
<rdf:type rdf:resource="http://idi.fundacionctic.org/cruzar/turismo#Edificio-religioso"/>
</ezc:Preference>
<ezc:Preference rdf:about="http://ontologies.ezweb.morfeo-project.org/ezc/var/Var2">
<dol:has-quality rdf:resource="http://idi.fundacionctic.org/cruzar/turismo#Estilo-renacentista"/>
</ezc:Preference>
4. Cross-reference for EzContext classes and properties
Property: ezc:inContext
URI: http://ontologies.ezweb.morfeo-project.org/ezcontext/ns#inContext
In Context - A user is supposed to be in different situations. User profiles can vary according to their contexts
- OWL Type:
- ObjectProperty
- Domain:
- http://ontologies.ezweb.morfeo-project.org/platform/ns#EzUser
- Range:
- ezc:Context
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