Design process enabling adaptation in pervasive heterogeneous contexts

International audienceIn the next decades, the growth in population ageing will cause important problems to most industrialized countries. To tackle this issue, Ambient Assistive Living (AAL) systems can reinforce the well-being of elderly people, by providing emergency, autonomy enhancement, and comfort services. These services will postpone the need of a medicalized environment, and will allow the elderly to stay longer at home. However, each elderly has specific needs and a deployment environment of such services is likely unique. Furthermore, the needs evolve over time, and so does the deployment environment of the system. In this paper, we propose the use of a model-based development method, the adaptive medium approach, to enable dynamic adaptation of AAL systems. We also propose improvements to make it more suited to the AAL domain, such as considering heterogeneity and a composition model. The paper includes an evaluation of the prototype implementing the approach, and a comparison with related work

Enabling collaboration between heterogeneous circles of trust through innovative identity solutions

International audienceDuring the last years, the growth of e-commerce has been considerable due to the increase of user confidence in secure electronic payment. Many web services have been developed and some decided to establish links of confidence, also called circles of trust. A user that accesses a web service in a circle of trust can also access other web services of the circle without additional authentication. In that way, the web services offer is larger and clients' demands more satisfied. Circles of trust are naturally composed of web services from the same type of activity. In this article, we address the problem of federating heterogeneous circles of trust. The main objective is to develop new e-services based on the composition of heterogeneous services. For instance, an application can be the electronic registration of a child to a day-care center: parents will need documents from their bank (in order to pay), from the government (to prove its identity), and from other sources. The preliminary results introduced here are issued from a French innovative research project called FC2 that deals with the federation of heterogeneous circles of trust

bCMS-SPL case study: A proposition based on the Cloud Component Approach

This paper is a model for the Comparing Modeling Approaches workshop. It presents the cloud component model and a Model for Variability of Refinement Processes used to model the proposed use case. Our targets are high-level and architectural design, and evolution. Runtime support will be tackled, but is not in the main focus of our paper. We introduce: A single system: on the basis of a custom component model, the cloud component model. The latter is dedicated to the modeling of distributed applications. The whole SPL: on the basis of an MDE refinement process model that has the property of being variable. Its specification is inspired by previous works on refinement and feature models dedicated to provide adaptation capabilities to component-based architectures

Modeling Dynamic Adaptations using Augmented Feature Models

International audienceDynamic Software Product Lines (DSPL) is an emerging trend that aims at developing dynamically adaptive software products on the basis of Software Product Lines (SPL) techniques. SPLs techniques make a distinction between the problem space and the solution space. In the former, artifacts corresponds to variabilities and features whereas in the latter they corresponds components (or aspects, objects...). In this article we introduce the Model for Variable Refinement Processes (MVRP), that aims at building DSPLs on the basis of a reconsideration of the semantic of Feature Models, that leads to an enhanced definition of the adaptation mechanisms and plans, and distinction between static and dynamic variabilities in the problem space

Comparison and Complementarity of Two Approaches to Implement AAL Systems

International audienceThis short paper compares two approaches of the state of the art, to implement Ambient Assisted Living (AAL) systems. By com- paring the two approaches, we aim to show that combining them could lead to an improvement of the offered response of the system. It shows that it could be interesting to develop a proof-of-concept system from a combination of these approaches, as it would improve the state of the art in AAL systems