Pervasive Information Systems Adaptation Challenges

Pervasive Information Systems Adaptation Challenges

Fatma Achour (Multimedia, Information Systems and Advanced Computing Laboratory (MIRACL), University of Sfax, Sfax, Tunisia), Anis Jedidi (Multimedia, Information Systems and Advanced Computing Laboratory (MIRACL), University of Sfax, Sfax, Tunisia) and Faiez Gargouri (Multimedia, Information Systems and Advanced Computing Laboratory (MIRACL), University of Sfax, Sfax, Tunisia)
DOI: 10.4018/IJAPUC.2017100102
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Abstract

Initially, a significant number of contextual information can be employed to describe the pervasive system. Hence, to design this type of system, there is a stern need for a new information system. Unlike the classical information system, the new system integrates the mobile devices characterized by different hardware and software capacity and other useful devices. Therefore, most pervasive information system designers provide mechanisms and architectures to effectively save, recover and submit the most relevant information to the user regardless of location, time and the user's equipment which are independent of the network constraints. In this paper, the authors present a model to describe the pervasive information system through the use of the existing contextual models. In the same context, they suggest a semantic description to adapt the users to six categories of contextual information by taking the semantic-web-service creation as a basis. Finally, they present the semantic rules applied to the intended description and notification system to validate these rules.
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The Challenges Of The Pervasive System

The most accurate and the most used definition of the pervasive system is resolved by Augustin research works (Agoston et al., 2001); “…pervasive system makes information available anywhere and anytime…” These systems must be used in different contexts depending on the user's environment and the user's profile as well as the used terminal. Among the pervasive system characteristics; (i) the use of lightweight, controllable and wireless devices, (ii) the network architectures with an automatic configuration and (iii) the high distributed environment with a heterogeneity, mobile and an autonomous structure.

In contrast to the traditional information systems, these new systems integrate different mobile devices with different hardware and software capabilities and other useful features for this system type (Chaari et al., 2007). In fact, with these systems, the mobile phone, for example, is no longer used for simple communication. PDAs are no longer just a planning and organization gadgets. The pocket PCs are no longer isolated from the Internet. These devices must interact according to their contexts of use in order to meet the user's need. Accordingly, a traveler can check and send his documents according to the characteristics of the wireless networks available in an airport, a patient can make an appointment with his doctor from his PDA. A manager can view the status of his work at home. In addition, the pervasive information system designers must provide an architecture and a mechanism to store, retrieve and, efficiently, send the most relevant information to the user irrespective of location, time and the equipment that he uses. The pervasive system is presented as the next step after the distributed and the mobile system (Khalfi et al., 2014). It must meet the following requirements:

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