Application Ontology Manager for Hydra IST Ján Hreňo Martin Sarnovský Peter Kostelník TU Košice

Content Project Overview Application Ontology Manager Device Ontology Use of Ontologies in HYDRA

HYDRA Project HYDRA IST project (Net- worked Embedded System Middleware for Heterogeneous Physical Devices in a Distributed Architecture) Project vision: To create the most widely deployed middleware for intelligent networked embedded systems that will allow producers to develop cost-effective and innovative embedded applications for new and already existing devices. Project goal: To develop a middleware for Ambient-Intelligent devices based on a Service-oriented Architecture using Model Driven Architecture

HYDRA Outputs Output of the project -Middleware -SDK -DDK Set of Managers -Application Elements -Device Elements

Application Ontology Manager Interface for using the Device Ontology and all the related models AOM maintains the run-time instances of the Hydra devices Semantic model based on Sesame framework Java, OSGi

Application Ontology Manager IDE

Device Ontology Device ontology presents basic high-level concepts describing the device related information Bottom up design Based on most frequent functionality requirements it was extended with models of: -Hardware/Software -Events provided by device -Energy profiles -QoS profiles -Security properties Static structures (HW, SW, Energy profiles) Support of multiple annotations (QoS, Security) Owl, Designed in TopBraid

(a part of) HYDRA Device Ontology

Use of ontologies in HYDRA Ontologies for -Device developer -Application developer -Application The role of semantics -Model-driven device editor -Querying with expectations and requirements -Semantic devices -Application context awareness

Model Driven Device Editor Ontology administration tools included in the IDE Serves as ontology editor Role of semantics: model-driven editor 2 ontologies supporting annotation process were created: -Static taxonomy model -Annotation property model Form properties Annotation properties

Querying with expectations and requirements Scenario: application needs to select most suitable device for playing the video files located in the living room Role of semantics: -Query and requirements clauses created using AOM IDE -Translated to SPARQL, evaluated by reasoner -Result retrieved in XML IDE supports 2 types of queries: -Retrieve requirements for devices matching query -Retrieve devices having services matching the query

Semantic Devices I Programming concept representing a logical aggregate of devices and services Implemented using: -Static mapping -Dynamic mapping Creation of semantic devices in DDK, IDE Application developer can focus on selection of devices – proxies and code generated automatically in DDK according to the configuration information attached

Application context awareness Used in creation of application domain model Used to specify some attributes -Locations (rooms, etc.) -Persons who use application -Devices belongs to specific locations owned by concrete users Role of semantics: -Application domain models to be used are integrated into ontologies -Enables to create queries containing application context information

Application model example

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