This work is licensed under a Creative Commons Attribution License. This copyright applies to the Recommender System Context (RSCtx) Ontology Specification and accompanying documentation in RDF. Regarding underlying technology, the RSCtx Ontology uses W3C's RDF technology, an open Web standard that can be freely used by anyone.
The Recommender System Context (RSCtx) ontology represents context which may be interesting in providing recommendations to users. It extends PRISSMA, a domain-independent vocabulary for displaying Web of Data resources in mobile environments.
What follows is a schematic representation of how RSCtx extends PRISSMA. White boxes are RSCtx classes, grey boxes are PRISSMA classes, while blue and yellow boxes represent classes from other integrated ontologies.
Recommender Systems (RS) are software tools and techniques providing suggestions for items to be of use to a user. Various kind of items can be suggested such as music tracks, movies and news. Context Aware Recommender Systems (CARS) are a particular category of recommender systems which exploits contextual information for providing more effective recommendations.
PRISSMA vocabulary provides classes and properties to model core mobile context concepts useful for dynamic adaptation of user interfaces for RDF data. It models the context of usage by modeling different dimensions: the user who requested the resource, the device features on which the resource will be displayed and the surrounding physical environment.
RSCtx extends PRISSMA in order to represent the main contextual information which are relevant when recommending resources to users.
IRI: http://softeng.polito.it/rsctx#AdministrativeRegion
IRI: http://softeng.polito.it/rsctx#AnchorPoint
It is a key location, such as our home and work place, that we consider as "anchor" in our understanding of the geographic environment where we live. In general, an anchor-point is a frequently visited location or a location where one spends a lot of time.
IRI: http://softeng.polito.it/rsctx#Boss
The user is with his boss. This may be a more formal situation that being with just the colleagues.
IRI: http://softeng.polito.it/rsctx#BusinessPartner
The user is with a business partner, e.g. a business partner can be a customer or a member of another organizations with which the user is collaborating or a supplier.
IRI: http://softeng.polito.it/rsctx#CalendarSeason
Season which is generally recognized in temperate and subpolar regions, include summer, spring, winter and fall (or autumn).
IRI: http://softeng.polito.it/rsctx#Child
The user is with children, not necessarily his family: for example may be a teacher or a baby sitter.
IRI: http://softeng.polito.it/rsctx#Colleague
The user is with one or more colleagues.
IRI: http://softeng.polito.it/rsctx#CompanionHome
The home of a companion of the user, such as a freind's home or a colleague's home.
IRI: http://softeng.polito.it/rsctx#Companion
Companion class indicates which kind of company the user as at the moment. For example, it may be with family, friends or colleagues.
IRI: http://softeng.polito.it/rsctx#DayOfWeek
This class indicates the day of the week (such as Monday, Tuesday, etc.).
IRI: http://softeng.polito.it/rsctx#EmotionalState
The state of a person's emotions (especially with regard to pleasure or dejection).
IRI: http://softeng.polito.it/rsctx#Family
The user is with his family, not necessarely with children. For instance, this may includes being just with the sister or brother or the parents.
IRI: http://softeng.polito.it/rsctx#Fitness
It is a value partition which represents the health of the body, it can be seen as a summary of physiological state, since it is possible to map fitness values with physiological indicators ranges (e.g. ill if temperature greater than a certain threshold), although this is up to the designer which is using the ontology.
IRI: http://softeng.polito.it/rsctx#Friend
The user is with one or more friends.
IRI: http://softeng.polito.it/rsctx#GeographicalRegion
A physical or historical region. Such as the Iberian peninsula or the Northwest European Atlantic Protestant Region (i.e. the European "source regions" in early American colonization efforts).
IRI: http://softeng.polito.it/rsctx#Hour
The hours of a day.
IRI: http://softeng.polito.it/rsctx#LightLevel
This class represent the current level of light. It is intended some symbolic level such as dark, sunlight, etc.
IRI: http://softeng.polito.it/rsctx#MentalState
A mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic, such as depression, cognitive load, nervousness.
IRI: http://softeng.polito.it/rsctx#Motion
This class indicates if the user is moving and how, e.g. if he is walking or running.
IRI: http://softeng.polito.it/rsctx#NoiseLevel
This class represents the current level of noise. It is intended a symbolic level such as very noisy, silent, etc.
IRI: http://softeng.polito.it/rsctx#PartOfDay
This class represents the time intervals in which a day can be divided in.
IRI: http://softeng.polito.it/rsctx#Partner
The user is with her/his boyfriend/girlfriend or husband/wife.
IRI: http://softeng.polito.it/rsctx#PhysiologicalState
The state of the body or bodily functions.
IRI: http://softeng.polito.it/rsctx#Pleasure
IRI: http://softeng.polito.it/rsctx#PublicPlace
A public place such as a cinema or a theatre.
IRI: http://softeng.polito.it/rsctx#Purpose
Purpose
IRI: http://softeng.polito.it/rsctx#Region
A political or geographical region.
IRI: http://softeng.polito.it/rsctx#Season
A season is a division of the year marked by changes in weather.
IRI: http://softeng.polito.it/rsctx#SymbolicLocation
In general, it represents an abstract ideas of where an object is (e.g. next to a mailbox). In the context of the ontology, it can be an anchor point (i.e. a frequently visited location) or a public place or the anchor point of another user.
IRI: http://softeng.polito.it/rsctx#Temperature
It represents the exterior temperature by means of a symbolic value, such as warm or cool.
IRI: http://softeng.polito.it/rsctx#Time
Time is an instant, i.e. a timestamp. Then it can be characterized by some TimeIntervals which it belongs to, such as winter, Monday and morning.
IRI: http://softeng.polito.it/rsctx#TimeInterval
A period of time between two instants.
IRI: http://softeng.polito.it/rsctx#TrafficLevel
This class represents the current traffic situation.
IRI: http://softeng.polito.it/rsctx#TransportationMean
It represents the transportation mean the user is using or is going to use (e.g. to reach a restaurant or to visit a city), such as car, bike, public transport or none (he is going on foot).
IRI: http://softeng.polito.it/rsctx#TropicalSeason
Season which occur in hot regions. It includes the rainy (or wet, or monsoon) season and the dry season, In some tropical areas, a cool or mild season is also present.
IRI: http://softeng.polito.it/rsctx#availableTime
It indicates how much time the user can spend (e.g. to visit a city or to go for lunch in lunch break at work).
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#bulding
It indicates the building associated to a location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#city
It indicates the city of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#companion
This property indicates who is the current companion of the user, e.g. a friend a family member or a colleague.
IRI: http://softeng.polito.it/rsctx#country
It indicates the country of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#county
It indicates the county of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#dayOfWeek
This property indicates the day of week of a Time.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#desk
It indicates the Desk of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#district
It indicates the District of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#federatedState
It indicates the FederatedState of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#fifthLevelAdministrativeDivision
It indicates the Fifth Level Administrative DIvision of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#firstLevelAdministrativeDivision
It indicates the first level administrative division of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#floor
It indicates the Floor of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#floorSection
It indicates the FloorSection of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#fourthLevelAdministrativeDivision
It indicates the fourth level administrative division of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#hasEmotionalState
This property indicates the emotional state of a user.
IRI: http://softeng.polito.it/rsctx#hasFitness
This property indicates the fitness of a user.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#hasMentalState
This property indicates the mental state of a user.
IRI: http://softeng.polito.it/rsctx#hasMotion
This property indicates the motion of a user.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#hasPhysiologicalState
This property indicates the phsysiological state of a user.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#hasPurpose
This property indicates the purpose of a user.
IRI: http://softeng.polito.it/rsctx#hasTemperature
This property indicates a symbolic value for the temperature (such as warm, cold, etc.).
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#hour
This property indicates the hour which a Time is included.
IRI: http://softeng.polito.it/rsctx#lightLevel
It indicates a LightLevel.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#municipality
It indicates the Municipality of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#neighborhood
It indicates the Neighborhood of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#noiseLevel
It indicates a NoiseLevel
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#parish
It indicates the Parish of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#partOfDay
This property indicates part of the day in which a Time is included in.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#province
It indicates the Proince of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#region
It indicates the Region of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#room
It indicates the Room of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#season
It indicates the season in which a Time is included in.
IRI: http://softeng.polito.it/rsctx#secondLevelAdministrativeDivision
It indicates the second level administrative division of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#site
It indicates the Site of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#street
It indicates the Street of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#symbolicLocation
It indicates to which symbolic location that POI corresponds to (if any), such as the home or the workplace of the user or a public place (e.g. a cinema).
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#thirdLevelAdministrativeDivision
It indicates the third level administrative division of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#time
It indicates the time associated to the Environment.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#trafficLevel
It indicates a TrafficLevel
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#transportationMean
It indicates which TransportationMean the user is using or is going to use.
IRI: http://softeng.polito.it/rsctx#weather
It indicates the weather associated to the current context.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#address
It indicates the address of a location
has characteristics: functional
IRI: http://softeng.polito.it/rsctx/arousal
This property indicates the arousal of a PhysiologicalState.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#bloodPressure
This property indicates the blood pressure (in mmHg) of a PhysiologicalState
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#bodyTemperature
This property indicates the temperature (in degree Celsius) of a PhysiologicalState.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#budget
It indicates how much the user want or can spend (for example for a travel or a purchase or to go for a dinner in a restaurant).
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#exteriorTemperature
It indicates the exterior temperature in degree Celsius.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#fatigue
This property indicates the fatigue of a PhysiologicalState. It is represented as string because there are scales such as Samm-Perelli seven point scale and karolinska sleepiness scale with some numbers associated to a string.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#heartbeat
This property indicates the heartbeat of a PhysiologicalState
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#injury
This property indicates the injury of a PhysiologicalState
IRI: http://softeng.polito.it/rsctx#holiday
This property indicates if a Time is holiday or a working day.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#lighting
It indicates the light level in lux.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#noise
It indicates the noise in decibel.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#nourishment
This property indicates the nourishment (in BMI) of a PhysiologicalState.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#perspiration
This property indicates the perspiration (in liters per hours) of a PhysiologicalState.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#pupilsDilation
This property indicates the pupil dilation (in mm) of a PhysiologicalState.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#respiration
This property indicates the respiration of a PhysiologicalState (in breaths per minute).
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#ZIPCode
It indicates the ZIP code of a Location.
has characteristics: functional
IRI: http://softeng.polito.it/rsctx#Afternoon
The time of the day between noon and evening. The mapping with respect the hours is possible but not defined because it may vary with the location and the habits.
IRI: http://softeng.polito.it/rsctx#anger
IRI: http://softeng.polito.it/rsctx#anxiety
IRI: http://softeng.polito.it/rsctx#Fall
IRI: http://softeng.polito.it/rsctx#Bike
IRI: http://softeng.polito.it/rsctx#boredom
IRI: http://softeng.polito.it/rsctx#Calm
IRI: http://softeng.polito.it/rsctx#Car
IRI: http://softeng.polito.it/rsctx#Chaotic
IRI: http://softeng.polito.it/rsctx#cognitiveLoad
IRI: http://softeng.polito.it/rsctx#Cold
IRI: http://softeng.polito.it/rsctx#confusion
IRI: http://softeng.polito.it/rsctx#Cool
IRI: http://softeng.polito.it/rsctx#MildSeason
IRI: http://softeng.polito.it/rsctx#depression
IRI: http://softeng.polito.it/rsctx#disgust
IRI: http://softeng.polito.it/rsctx#dread
IRI: http://softeng.polito.it/rsctx#DrySeason
IRI: http://softeng.polito.it/rsctx#Evening
The period of time near the end of the day, from the end of afternoon (usually from 6 PM) to nighttime. The mapping with respect the hours is possible but not defined becaus it may vary with the location and the habits.
IRI: http://softeng.polito.it/rsctx#excitement
IRI: http://softeng.polito.it/rsctx#exahust
IRI: http://softeng.polito.it/rsctx#fear
IRI: http://softeng.polito.it/rsctx#Freezing
IRI: http://softeng.polito.it/rsctx#good
IRI: http://softeng.polito.it/rsctx#great
IRI: http://softeng.polito.it/rsctx#happiness
IRI: http://softeng.polito.it/rsctx#hate
IRI: http://softeng.polito.it/rsctx#Home
IRI: http://softeng.polito.it/rsctx#hope
IRI: http://softeng.polito.it/rsctx#Hot
IRI: http://softeng.polito.it/rsctx#hypnosis
IRI: http://softeng.polito.it/rsctx#inFit
IRI: http://softeng.polito.it/rsctx#injured
IRI: http://softeng.polito.it/rsctx#irritation
IRI: http://softeng.polito.it/rsctx#joy
IRI: http://softeng.polito.it/rsctx#love
IRI: http://softeng.polito.it/rsctx#Mild
IRI: http://softeng.polito.it/rsctx#Moderate
IRI: http://softeng.polito.it/rsctx#WetSeason
IRI: http://softeng.polito.it/rsctx#Morning
The period of time between midnight and noon or, more commonly, the interval between sunrise and noon.
IRI: http://softeng.polito.it/rsctx#nervousness
IRI: http://softeng.polito.it/rsctx#Night
The period of time between the sunset and the sunrise when the Sun is below the horizon.The mapping with respect the hours is possible but not defined becaus it may vary with the location and the habits.
IRI: http://softeng.polito.it/rsctx#NoTrasportationMean
IRI: http://softeng.polito.it/rsctx#Pleasant
IRI: http://softeng.polito.it/rsctx#pride
IRI: http://softeng.polito.it/rsctx#psychopathy
IRI: http://softeng.polito.it/rsctx#PublicTransport
IRI: http://softeng.polito.it/rsctx#relief
IRI: http://softeng.polito.it/rsctx#sadness
IRI: http://softeng.polito.it/rsctx#satisfaction
IRI: http://softeng.polito.it/rsctx#shame
IRI: http://softeng.polito.it/rsctx#sleepy
IRI: http://softeng.polito.it/rsctx#Spring
IRI: http://softeng.polito.it/rsctx#Summer
IRI: http://softeng.polito.it/rsctx#Taxi
IRI: http://softeng.polito.it/rsctx#timePressure
IRI: http://softeng.polito.it/rsctx#tired
IRI: http://softeng.polito.it/rsctx#trance
IRI: http://softeng.polito.it/rsctx#trauma
IRI: http://softeng.polito.it/rsctx#VeryCold
IRI: http://softeng.polito.it/rsctx#VeryWarm
IRI: http://softeng.polito.it/rsctx#Warm
IRI: http://softeng.polito.it/rsctx#weak
IRI: http://softeng.polito.it/rsctx#Winter
IRI: http://softeng.polito.it/rsctx#WorkPlace
IRI: http://softeng.polito.it/rsctx#worry
Day Of Weekc, Part of Dayc, Seasonc
Emotional Statec, Fitnessc, Mental Statec, Physiological Statec
This HTML document was obtained by processing the OWL ontology source code through LODE, Live OWL Documentation Environment, developed by Silvio Peroni.
A specific type of subnational entity in a number of countries, e.g. Belgium, Italy, France.