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Trajecto Ontology
Release: 2025-05-09
- Modified on: 2026-10-01
- This version:
- http://w3id.org/trajecto/1.1.0
- Latest version:
- http://w3id.org/trajecto
- Previous version:
- http://w3id.org/trajecto/0.9
- Revision:
- 1.1.0
- Issued on:
- 2026-10-01
- Authors:
- Sotirios Angelis, University of the Aegean
- Konstantinos Kotis, University of the Aegean
- Publisher:
- i-Lab, Department of Cultural Technology and Communication, University of the Aegean
- Imported Ontologies:
- context
- events
- patterns
- poi
- profiles
- purpose
- purpose/skos
- scheduled
- spaces
- spatial
- temporal-dwell
- user
- datAcron
- Source:
- https://github.com/sotirisAng/trajecto-stakg/blob/main/ontology/trajecto.ttl
- Download serialization:
- License:
- Visualization:
- Cite as:
- Angelis, S. (2026). Semantic Trajectory Analytics and Recommender Systems: Engineering Semantic Trajectories as Knowledge Graphs. Doctoral dissertation, University of the Aegean.
Ontology Specification
Abstract
Trajecto is a modular ontology for semantic trajectories: GPS-derived movement of people, the points of interest they interact with, the patterns, purposes and contexts of that movement, and the user profiles learned from it.Introduction back to ToC
Source: https://github.com/sotirisAng/trajecto-stakg/blob/main/ontology/trajecto.ttl. The whole ontology is documented from http://w3id.org/trajecto (the core module), which imports every module.Namespace declarations
| datacron | <http://www.datacron-project.eu/datAcron#> |
| dcterms | <http://purl.org/dc/terms/> |
| dul | <http://www.ontologydesignpatterns.org/ont/dul/DUL.owl#> |
| events | <http://w3id.org/trajecto/events#> |
| owl | <http://www.w3.org/2002/07/owl#> |
| poi | <http://w3id.org/trajecto/poi#> |
| rdf | <http://www.w3.org/1999/02/22-rdf-syntax-ns#> |
| rdfs | <http://www.w3.org/2000/01/rdf-schema#> |
| skos | <http://www.w3.org/2004/02/skos/core#> |
| trajecto | <http://w3id.org/trajecto#> |
| vann | <http://purl.org/vocab/vann/> |
| xml | <http://www.w3.org/XML/1998/namespace> |
| xsd | <http://www.w3.org/2001/XMLSchema#> |
trajecto: Overview back to ToC
This ontology has the following classes and properties.Classes
- Casual Navigation
- Centrality Role
- Cultural Event
- Engagement Level
- Entity of Interest
- Event of Interest
- Exploratory Navigation
- Immersive Navigation
- Interaction
- Mode of Transportation
- Navigation Style
- Object of Interest
- Person
- Point of Interest
- Purpose of Movement
- Region of Interest
- Region_of_Interest (deprecated)
- Social Interaction
- Stop
- stop (deprecated)
- Stop Position
- Targeted Navigation
- Trajectory Similarity
Object Properties
- clusters
- encloses
- forms trajectory
- happens during event of interest
- happensdDuringEventOfInterest (deprecated)
- has category similarity
- has centrality role
- has engagement level
- has event
- has interaction
- has interest
- has mode of transportation
- has navigation match
- has navigation style
- has next position
- has occurred event
- has point of interest
- has previous position
- has purpose
- has purpose match
- has region of interest
- has stop
- has temporal overlap
- has trajectory
- includes interaction
- is trajectory formed by
- is weather condition of
- participates in
- trajectory refers to
- with trajectory
Data Properties
- betweenness centrality
- community ID
- external description
- external label
- floor
- has address
- has easting
- has immersive interaction count
- has meaningful interaction count
- has northing
- has OSM type
- has place ID
- has POI count
- has position index
- has total dwell time
- has unique category count
- has velocity
- PageRank
- similarity score
- timestamp
Named Individuals
trajecto: Description back to ToC
Trajecto is a modular ontology for semantic trajectories: GPS-derived movement of people, the points of interest they interact with, the patterns, purposes and contexts of that movement, and the user profiles learned from it. The core module defines the moving person, entities of interest and interactions, and reuses the datAcron trajectory model (Trajectory, TrajectoryPart, RawPosition, MovingObject) and DUL. It imports the other eleven modules and the purpose concept scheme, and is the entry point to the whole ontology.Cross-reference for trajecto classes, object properties and data properties back to ToC
This section provides details for each class and property defined by trajecto.Classes
- Casual Navigation
- Centrality Role
- Cultural Event
- Engagement Level
- Entity of Interest
- Event of Interest
- Exploratory Navigation
- Immersive Navigation
- Interaction
- Mode of Transportation
- Navigation Style
- Object of Interest
- Person
- Point of Interest
- Purpose of Movement
- Region of Interest
- Region_of_Interest (deprecated)
- Social Interaction
- Stop
- stop (deprecated)
- Stop Position
- Targeted Navigation
- Trajectory Similarity
Centrality Rolec back to ToC or Class ToC
IRI: http://w3id.org/trajecto#CentralityRole
Structural role of a POI in the graphs of co-visitation and flow between POIs, derived from its degree, betweenness and PageRank relative to the other POIs.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Abstract c
- is in range of
- has centrality role op
- has members
- Destination POI ni, Gateway POI ni, Hub POI ni, Origin POI ni, Peripheral POI ni
Cultural Eventc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#CulturalEvent
An event of interest of a cultural nature, such as a festival or an exhibition opening.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Event of Interest c
Engagement Levelc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#EngagementLevel
Engagement of a trajectory as a whole, derived from the share of its meaningful and immersive interactions. Values: HighEngagement, MediumEngagement, LowEngagement. The temporal-dwell module models engagement of single dwell events separately.
- Is defined by
- http://w3id.org/trajecto
- is in range of
- has engagement level op
- has members
- High Engagement ni, Low Engagement ni, Medium Engagement ni
Entity of Interestc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#EntityOfInterest
The entity of interest of any kind (object, event, living organism), that the recording activity aims to record.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Entity c
- has sub-classes
- Event of Interest c, Object of Interest c, Point of Interest c, Region of Interest c
- is in domain of
- has OSM type dp, has interest op
Event of Interestc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#EventOfInterest
The specific event that the recording activity aims to record. This event may be a natural phenomenon, the movement of an individual etc.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Entity of Interest c, Event c
- has sub-classes
- Cultural Event c
- is in range of
- happens during event of interest op
Interactionc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#Interaction
Something a moving entity does with, or near, an entity of interest during a trajectory. Specialized as POI interactions in the POI module.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Abstract c
- has sub-classes
- Social Interaction c
- is in range of
- participates in op
Mode of Transportationc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#ModeOfTransportation
The means by which a trajectory part is travelled, such as walking, cycling or bus.
- Is defined by
- http://w3id.org/trajecto
- is in range of
- has mode of transportation op
Object of Interestc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#ObjectOfInterest
The specific physical object that the recording activity aims to record. The object of interest may be a tree, a monument, a person etc.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Entity of Interest c, Object c
Personc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#Person
A person whose movement is recorded as one or more trajectories.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Moving Object c
Point of Interestc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#PointOfInterest
The specific spatial point that the recording activity aims to record. The point of interest may be literally one geometric point or an central point of a wider entity of interest.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Entity of Interest c, Point c
- is in domain of
- PageRank dp, betweenness centrality dp, community ID dp, external description dp, external label dp, has centrality role op
- is in range of
- has point of interest op
Purpose of Movementc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#PurposeOfMovement
The reason a trajectory is undertaken. The purpose module specializes it; trajectories point to purpose concepts through hasPurpose.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Abstract c
- is in range of
- has purpose op
Region of Interestc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#RegionOfInterest
The region that a recording activity aims to record, such as a forest, an archaeological site or a town.
- Is defined by
- http://w3id.org/trajecto
- is equivalent to
- Region_of_Interest (deprecated) c
- has super-classes
- Entity of Interest c, Region c
- is in domain of
- has address dp, has place ID dp
- is in range of
- has region of interest op
Region_of_Interest (deprecated)c back to ToC or Class ToC
IRI: http://w3id.org/trajecto#Region_of_Interest
Deprecated since 1.1.0: renamed to RegionOfInterest.
- Is deprecated
- true
Social Interactionc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#SocialInteraction
An interaction between moving persons within an area of interest.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Interaction c
Stopc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#Stop
A trajectory part during which the moving object stays within a small area for a minimum time.
- Is defined by
- http://w3id.org/trajecto
- is equivalent to
- stop (deprecated) c
- has super-classes
- Point c, Trajectory Part c
- is in range of
- has stop op
stop (deprecated)c back to ToC or Class ToC
IRI: http://w3id.org/trajecto#stop
Deprecated since 1.1.0: renamed to Stop.
- Is deprecated
- true
Stop Positionc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#StopPosition
A raw position that belongs to a stop.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Raw Position c
Trajectory Similarityc back to ToC or Class ToC
IRI: http://w3id.org/trajecto#TrajectorySimilarity
A scored similarity between two trajectories along one facet, such as shared POI categories, navigation pattern, temporal context or purpose.
- Is defined by
- http://w3id.org/trajecto
- has super-classes
- Abstract c
- is in domain of
- similarity score dp, with trajectory op
- is in range of
- has category similarity op, has navigation match op, has purpose match op, has temporal overlap op
Object Properties
- clusters
- encloses
- forms trajectory
- happens during event of interest
- happensdDuringEventOfInterest (deprecated)
- has category similarity
- has centrality role
- has engagement level
- has event
- has interaction
- has interest
- has mode of transportation
- has navigation match
- has navigation style
- has next position
- has occurred event
- has point of interest
- has previous position
- has purpose
- has purpose match
- has region of interest
- has stop
- has temporal overlap
- has trajectory
- includes interaction
- is trajectory formed by
- is weather condition of
- participates in
- trajectory refers to
- with trajectory
clustersop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#clusters
Relates a trajectory cluster to a trajectory it groups.
- Is defined by
- http://w3id.org/trajecto
- has super-properties
- has Part op
- has domain
- Trajectory Cluster c
- has range
- Trajectory c
enclosesop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#encloses
Relates a trajectory to a segment that is part of it.
- Is defined by
- http://w3id.org/trajecto
has characteristics: inverse functional
- has super-properties
- has Part op
- has domain
- Trajectory c
- has range
- Segment c
forms trajectoryop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#formsTrajectory
Specifies the moving object which forms a trajectory
- Is defined by
- http://w3id.org/trajecto
- has domain
- Moving Object c
- has range
- Trajectory c
- is inverse of
- is trajectory formed by op
happens during event of interestop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#happensDuringEventOfInterest
Relates a trajectory part to an event of interest that takes place while it is recorded.
- Is defined by
- http://w3id.org/trajecto
- has equivalent properties
- happensdDuringEventOfInterest (deprecated) op
- has super-properties
- associated With op
- has domain
- Trajectory Part c
- has range
- Event of Interest c
happensdDuringEventOfInterest (deprecated)op back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#happensdDuringEventOfInterest
Deprecated since 1.1.0: renamed to happensDuringEventOfInterest.
- Is deprecated
- true
- has equivalent properties
- happens during event of interest op
has category similarityop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasJaccardCategorySimilarity
Jaccard similarity of the POI categories two trajectories interact with.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- Trajectory Similarity c
has centrality roleop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasCentralityRole
Relates a POI to its structural role.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Point of Interest c
- has range
- Centrality Role c
has engagement levelop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasEngagementLevel
Relates a trajectory to its engagement level. The engagement classes of the profiles module are defined over it.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- Engagement Level c
has eventop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasEvent
Links a trajectory to a behavioral event detected within its position sequence.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- Trajectory Event c
has interactionop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasInteraction
Relates a raw position to a POI interaction that takes place at it.
- Is defined by
- http://w3id.org/trajecto
- has super-properties
- associated With op
- has domain
- Raw Position c
- has range
- P O I Interaction c
has interestop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasInterest
Correlates an entity of interest with the type of interest that it presents.
- Is defined by
- http://w3id.org/trajecto
- has super-properties
- associated With op
- has domain
- Entity of Interest c
- has range
- Concept c
has mode of transportationop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasModeOfTransportation
Relates a trajectory part to the mode of transportation used for it.
- Is defined by
- http://w3id.org/trajecto
- has super-properties
- associated With op
- has domain
- Trajectory Part c
- has range
- Mode of Transportation c
has next positionop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasNextPosition
Relates a raw position to a later position of the same trajectory. Asserted between consecutive positions; as the property is transitive, a reasoner extends it to every later position.
- Is defined by
- http://w3id.org/trajecto
has characteristics: transitive
- has super-properties
- associated With op
- has domain
- Raw Position c
- has range
- Raw Position c
- is inverse of
- has previous position op
has occurred eventop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasOccurredEvent
Relates a trajectory part to an event that occurred during it.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory Part c
- has range
- Event c
- is inverse of
- occurs op
has point of interestop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasPointOfInterest
Relates a trajectory part to a point of interest associated with it.
- Is defined by
- http://w3id.org/trajecto
- has super-properties
- associated With op
- has domain
- Trajectory Part c
- has range
- Point of Interest c
has previous positionop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasPreviousPosition
Inverse of hasNextPosition: relates a raw position to an earlier position of the same trajectory.
- Is defined by
- http://w3id.org/trajecto
has characteristics: transitive
- has super-properties
- associated With op
- has domain
- Raw Position c
- has range
- Raw Position c
- is inverse of
- has next position op
has purposeop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasPurpose
Relates a trajectory to its purpose, a concept of the purpose concept scheme.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- Purpose of Movement c
has purpose matchop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasPurposeMatch
Two trajectories share a purpose.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- Trajectory Similarity c
has region of interestop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasRegionOfInterest
Relates a trajectory part to a region of interest it passes through.
- Is defined by
- http://w3id.org/trajecto
- has super-properties
- associated With op
- has domain
- Trajectory Part c
- has range
- Region of Interest c
has stopop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasStop
Relates a trajectory part to a stop it comprises.
- Is defined by
- http://w3id.org/trajecto
- has super-properties
- comprises op
- has domain
- Trajectory Part c
- has range
- Stop c
has temporal overlapop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasTemporalOverlap
Jaccard similarity of the temporal contexts of two trajectories.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- Trajectory Similarity c
has trajectoryop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#hasTrajectory
Deprecated duplicate of formsTrajectory: relates a moving object to a trajectory it forms.
- Is defined by
- http://w3id.org/trajecto
- Is deprecated
- true
has characteristics: inverse functional
- has domain
- Moving Object c
- has range
- Trajectory c
- is inverse of
- trajectory refers to op
includes interactionop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#includesInteraction
Relates a trajectory to the POI interactions that occur at its positions. A shortcut for the chain from a trajectory to its positions to their interactions, so that classes over interactions can be defined on trajectories.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- P O I Interaction c
is trajectory formed byop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#isTrajectoryFormedBy
Inverse of formsTrajectory: relates a trajectory to the moving object that forms it.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- Moving Object c
- is inverse of
- forms trajectory op
is weather condition ofop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#isWeatherConditionOf
Inverse of datAcron:hasWeatherCondition.
- Is defined by
- http://w3id.org/trajecto
- is inverse of
- has Weather Condition op
participates inop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#participatesIn
Relates an agent to an interaction it takes part in.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Agent c
- has range
- Interaction c
trajectory refers toop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#trajectoryRefersTo
Deprecated duplicate of isTrajectoryFormedBy: relates a trajectory to its moving object.
- Is defined by
- http://w3id.org/trajecto
- Is deprecated
- true
has characteristics: functional
- has domain
- Trajectory c
- has range
- Moving Object c
- is inverse of
- has trajectory op
with trajectoryop back to ToC or Object Property ToC
IRI: http://w3id.org/trajecto#withTrajectory
The other trajectory of a trajectory similarity.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory Similarity c
- has range
- Trajectory c
Data Properties
- betweenness centrality
- community ID
- external description
- external label
- floor
- has address
- has easting
- has immersive interaction count
- has meaningful interaction count
- has northing
- has OSM type
- has place ID
- has POI count
- has position index
- has total dwell time
- has unique category count
- has velocity
- PageRank
- similarity score
- timestamp
betweenness centralitydp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#betweennessCentrality
Betweenness centrality of a POI in the POI flow graph.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Point of Interest c
- has range
- float
community IDdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#communityId
Identifier of the co-visitation community a POI belongs to.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Point of Interest c
- has range
- integer
external descriptiondp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#externalDescription
Description of the Wikidata entity a POI is linked to.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Point of Interest c
external labeldp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#externalLabel
Label of the Wikidata entity a POI is linked to.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Point of Interest c
floordp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#floor
Floor number of a position, for indoor positioning.
- Is defined by
- http://w3id.org/trajecto
has addressdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasAddress
Postal address of a region of interest.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Region of Interest c
- has range
- string
has eastingdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasEasting
Easting (x) of a position in a projected or indoor coordinate reference system, in meters. Used instead of latitude where positions are planar, for example in indoor tracking.
- Is defined by
- http://w3id.org/trajecto
has immersive interaction countdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasImmersiveInteractionCount
Number of immersive interactions of a trajectory.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- integer
has meaningful interaction countdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasMeaningfulInteractionCount
Number of meaningful interactions of a trajectory.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- integer
has northingdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasNorthing
Northing (y) of a position in a projected or indoor coordinate reference system, in meters. Used instead of longitude where positions are planar.
- Is defined by
- http://w3id.org/trajecto
has OSM typedp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasOSMType
The OpenStreetMap tag (key=value) that identifies the type of an entity of interest.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Entity of Interest c
- has range
- string
has place IDdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasPlaceID
External identifier of a region of interest, such as an OpenStreetMap or geocoder place ID.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Region of Interest c
- has range
- string
has POI countdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasPOICount
Number of distinct POIs a trajectory interacts with.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- integer
has position indexdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasPositionIndex
Zero-based order of a raw position within its trajectory.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Raw Position c
- has range
- integer
has total dwell timedp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasTotalDwellTime
Sum of the dwell times of the interactions of a trajectory, in seconds.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
has unique category countdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasUniqueCategoryCount
Number of distinct POI categories a trajectory interacts with.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory c
- has range
- integer
has velocitydp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#hasVelocity
Velocity value attached to a geometry, as recorded by the source.
- Is defined by
- http://w3id.org/trajecto
PageRankdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#pageRank
PageRank of a POI in the POI flow graph.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Point of Interest c
- has range
- float
similarity scoredp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#similarityScore
Score of a trajectory similarity, from 0 to 1.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Trajectory Similarity c
timestampdp back to ToC or Data Property ToC
IRI: http://w3id.org/trajecto#timestamp
Recording time of a raw position, as an ISO 8601 local date-time string.
- Is defined by
- http://w3id.org/trajecto
- has domain
- Raw Position c
- has range
- string
Named Individuals
- Destination POI
- Gateway POI
- High Engagement
- Hub POI
- Low Engagement
- Medium Engagement
- Origin POI
- Peripheral POI
Destination POIni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#DestinationPOI
A high-PageRank POI with clearly more incoming than outgoing flow.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Centrality Role c
Gateway POIni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#GatewayPOI
A POI in the top quintile of betweenness: it bridges otherwise separate parts of the flow graph.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Centrality Role c
High Engagementni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#HighEngagement
Engagement level of a trajectory with a high share of meaningful and immersive interactions.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Engagement Level c
Hub POIni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#HubPOI
A POI in the top quintile of both co-visitation degree and PageRank.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Centrality Role c
Low Engagementni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#LowEngagement
Engagement level of a trajectory with few or no meaningful interactions.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Engagement Level c
Medium Engagementni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#MediumEngagement
Engagement level of a trajectory with a moderate share of meaningful interactions.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Engagement Level c
Origin POIni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#OriginPOI
A POI with clearly more outgoing than incoming flow.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Centrality Role c
Peripheral POIni back to ToC or Named Individual ToC
IRI: http://w3id.org/trajecto#PeripheralPOI
A POI with none of the other structural roles.
- Is defined by
- http://w3id.org/trajecto
- belongs to
- Centrality Role c
Legend back to ToC
c: Classes
op: Object Properties
dp: Data Properties
ni: Named Individuals
op: Object Properties
dp: Data Properties
ni: Named Individuals
References back to ToC
- S. Angelis. Semantic Trajectory Analytics and Recommender Systems: Engineering Semantic Trajectories as Knowledge Graphs. Doctoral dissertation, University of the Aegean, 2026.
- G. M. Santipantakis, G. A. Vouros, A. Glenis, C. Doulkeridis, A. Vlachou. The datAcron Ontology for Semantic Trajectories. ESWC 2017 Satellite Events, LNCS 10577, pp. 26-30, Springer, 2017. doi:10.1007/978-3-319-70407-4_6
- A. Gangemi, N. Guarino, C. Masolo, A. Oltramari, L. Schneider. Sweetening Ontologies with DOLCE. EKAW 2002, LNCS 2473, pp. 166-181, Springer, 2002. doi:10.1007/3-540-45810-7_18
- D. Doumanas, G. Bouchouras, A. Soularidis, K. Kotis, G. Vouros. From Human- to LLM-Centered Collaborative Ontology Engineering. Applied Ontology, 2024. doi:10.1177/15705838241305067
Acknowledgments back to ToC
The authors would like to thank Silvio Peroni for developing LODE, a Live OWL Documentation Environment, which is used for representing the Cross Referencing Section of this document and Daniel Garijo for developing Widoco, the program used to create the template used in this documentation.