Semantic approach for modelling an assistive environment using description logic.
ABSTRACT Smart living spaces provide autonomy and assistance to people with disabilities and elderly people in order to increase their independence. In this paper we present our approach to personalize a complex living environment for users with special needs. It provides an appropriate middleware for supporting assistive services in dynamic environments. It is built upon formalisms based on Description logic (DL) named Semantic Matching Framework (SMF) and designed on the matching of two models: an environment model, and a user model. SMF was implemented and integrated into a demonstrator, which is validated under laboratory conditions. Performance results are presented to highlight the time response of SMF.
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ABSTRACT: The growth of ubiquitous computing and its integration in smart environments constitutes a major challenge. However, many issues related to this technology were raised, and many efforts have been made to facilitate the implementation of such technology. Information management, sharing and reuse are examples of these issues. Ontologies are used in this context as promising solution to deal with these issues. Nevertheless, ontologies developed to date in the context of smart environments are limited and do not address all aspects of smart environments such as the problem of referentiality and the environmental change. In this paper, we propose a universal ontology for smart environments aiming firstly to overcome the limitations of the existing ontologies, and secondly extend its capabilities by adding new environmental aspects such as those mentioned previously. In this paper we demonstrate how our ontology can be used to describe domains as well as applications. We show through a case study how our ontology is used and integrated in a software self-organizing middleware for smart environments.IJWGS. 01/2010; 6:244-268.
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ABSTRACT: The recent convergence of ubiquitous computing and context-aware computing has seen a considerable rise in interest in applications that exploit aspects of the contextual environment to enhance implicit user interaction, offer services, present information, tailor application behavior or trigger adaptation. However they are often insufficient to provide adequate environments for people with special needs and allow them to be an integral part of society. This paper presents our approach to enhance environment services to peoples with special needs. Particularly it highlights the data representation and implementation of this approach under a framework based on the Web Ontology Language OWL-DL. A prototype of this framework was integrated in a smart home demonstrator and tested with users under a laboratory conditions.International Journal of Smart Home (IJSH). 01/2009; 3(2):13-26.