Andrea Cimmino María Poveda Villalón Raúl García Castro Socorro Bernarndos 2024-04-01 Salvador González Gerpe Digital Twin ontology used to define Digital Twins and Semantic Digital Twins and aggregations by dimensions using Web of Things. WoTDT: The WoT Digital Twin Ontology with Aggregation extension. dtw 0.4.0 comment Property that describes de action of aggregation between two different entities or dtw:DigitalTwinAggregate. aggregate d tw a Property that describes de action of aggregation between two different entities or dtw:DigitalTwinInstance. aggregate d tw i td:InteractionAffordance uses dtw:Model to model something. apply model Property that describes the different interaction affordances that the dt:DigitalTwinServices contains. contains interaction affordance Property that describes the different connections of the dtw:DigitalTwin. has connection Property that describes if the connection point is the consumer of the information. has consumer Property that describes the different data that the dt:DigitalTwinData contains. has data Property that describes the different Digital Entities that the digital twin contains. has digital entity has digital twin data Property that describes the Entity that the digital twin describes. has entity Property that describes the different extension formats that the models or data can be found. has format Property that describes the different models that the dtw:DigitalEntity contains. has model Property that describes if the connection point is the provider of the information. has provider dcat:Resource instantiate dtw:Model. instantiate dtw:Model used in the aggregation to obtain the DTwA dtw:Model. model aggregated from modeled by models dtw:Model models dcat:Resource. represent dcat:Resource used in the aggregation to obtain the DTwA dcat:Resource. resource aggregated from td:InteractionAffordance uses dcat:Resource for a reason. use data to dcat:Resource used by td:InteractionAffordance for a reason. used to dtw:Model used by td:InteractionAffordance to model something. used to model access rights accrual periodicity conforms to creator description format has part identifier identifiers is referenced by issued language license modified publisher replaces rights spatial temporal title type checksum status version notes access u r l byte size compress format contact point download u r l endpoint description endpoint u r l first had role has current version has version keyword landing page last media type package format prev previous version spatial resolution in meters temporal resolution theme theme taxonomy version has policy qualified attribution was generated by homepage Extension of the model or data with which can be found. has extension Boolean that indicates if the concept is inside or outside the digital twin. is internal has target has form has uri template schema idempotent observable safe synchronous Catalog Catalog Record Data Service Dataset Dataset Series Distribution Relationship Resource Describes the behaviors and response mechanisms of the entity (e.g. state transition, performance and disturbances) Behavioral Model 1 1 Existing connection between different dtw:ConnectionPoint. Connection Connection point of the connection. Connection Point Connection between dcat:Resource and td:InteractionAffordance. Data Service Connection 1 1 This dimension of the digital twin consists of various data models that represents all the information allocated in the digital twin. Digital Entity 1 1 1 A realistic representation of all product life cycle components using physical, virtual and interaction data. Digital Twin Describes the aggregation of all the DTIs. Unlike the DTI, the DTA may not be an independent data structure. It may be a computing construct that has access to all DTIs and queries them either ad-hoc or proactively. Digital Twin Aggregate Dimensions of which the digital twin is composed. Digital Twin Dimension Describes a specific corresponding physical product that an individual Digital Twin remains linked to throughout the life of that physical product. Digital Twin Instance This dimension of the digital twin consists of various subsystems, objects and sensory devices. These subsystems can include dynamic systems, control systems, maintenance systems, etc., and can be combined for a specific task. Also, non physical entities can be represented. Entity Connection point of the connection that is external to the DTw. External Connection Point Extension format in which the model or data is available. Format Describes all the geometric parameters of the physical entity (e.g. shapes, sizes and assembly relations). Geometric Model Connection point of the connection that is internal to the DTw. Internal Connection Point Model that allows the alignment of data with the objective of obtaining harmonised data from non-harmonised data. Mapping Model 1 Representation or conceptualization of the data registered in the Virtual Entity dimension. Model Connection between dtw:Model and dcat:Resource. Model Data Connection Model Model Connection Connection between dtw:Model and td:InteractionAffordance. Model Service Connection Model that contains the conceptualization of the information of the digital twin. This conceptualization activity refers to the organization and structuration of the information (data, knowledge, etc.), obtained during the acquisition process, into meaningful models at the knowledge level and according to the ontology requirements specification document. Ontology Model Responsible for providing all the physical properties (e.g. speed and force) based on dt:GeometricModel Physical Model A set of rules extracted from the historical data obtained from the physical model, whose function is to provide the virtual entity with a judgment for decision making, optimization, evaluation, prediction and maintenance. Rules Model Semantic Model Model that contains the data validation rules allowing the data to be validated. Shapes Model Twin Connection Action Affordance Event Affordance Interaction Affordance Property Affordance Thing relation access service catalog dataset distribution in series qualified relation record resource serves dataset service primary topic