This ontology is licensed under Creative Commons CC BY 3.0 It is developed in the framework of the Dem@Care project (http://www.demcare.eu/) and supported by the Information Technologies Institute (http://www.iti.gr) of the Centre for Research and Technology Hellas.
The ontology provides the vocabulary to annotate complex (high-level) activity classes with low-level observations for complex activity recognition.
Documentation regarding the ontology vocabulary can be found at http://www.demcare.eu/ontologies/ctxdesc.html
OWL pattern for describing activity models as abstract dependencies among classes.
In order to describe the context pertinent to each high-level activity in an abstract yet formal way, we reuse the Situation concept of the Descriptions and Situations (DnS) pattern of DOLCE+DnS Ultralite (DUL). The aim is to provide the conceptual model for annotating domain activity classes with lower-level observation types. The figure shows the specialisation of the Situation class, along with two sub-properties of the isSettingFor upper-level property.
The aim is to define relations among classes, therefore, the proposed pattern treats classes as instances, allowing property assertions to be made among domain concepts. Intuitively, the ontology can be thought of as a conceptual (meta) layer that can be placed on top of any domain activity ontology. This way, instances of the ContextDescriptor are used to link domain activities (describes property) with one or more lower-level conceptualisations through dependency property assertions.
For more details, please refer to the relevant paper: Georgios Meditskos, Efstratios Kontopoulos, Ioannis Kompatsiaris, "Knowledge-driven Activity Recognition and Segmentation Using Context Connections", International Semantic Web Conference (ISWC), pp. 260-275, Riva del Garda, Trento, Italy, 19-23 October 2014
This HTML document was obtained by processing the OWL ontology source code through LODE, Live OWL Documentation Environment, developed by Silvio Peroni.