Mobility and Context-Awareness

Mobility refers first to users, or more generally ob jects, in movement, and to the opportunity for these mobile users or ob jects to receive or/and transmit data, as well as to access or to provide services from anywhere. Context-awareness is generally known as the ability shown by an application to acquire data about the environment in which it executes and to modify itself in return to fit users expectations, enhancing thus its own quality of service. Since 2000, members of STeamer have gained a lot of expertise in acquiring, modelling and exploiting contextual data for adaptation purposes. During the last five years, we have explored more deeply the use of contextual spatial and temporal data for annotating (W. Viana de Carvalho’s PhD, 2010) and sharing (J. Bringel de Ribamar Filho’s PhD, 2011) personal multimedia documents produced by mobile users. We have studied then the coupling of Augmented Reality and Linked Open Data for designing context-aware and location-based mobile applications dedicated to the discovery of the user’s surroundings (B. Aydin, on-going PhD). For circumstantial events (accidents, . . . ) that often occur in situation of mobility, we have designed spontaneous and ephemeral communities as a special kind of social networks (G. Ben Nejma, on-going PhD). Furthermore, understanding, mastering and improving mobility, requires representing and analyzing tra jectories of mobile ob jects. Consequently, we have initiated studies on the notion of tra jectory, focusing first on two tasks: the identification of similarities in mobile users tra jectories in order to recommend multimedia contents in a social network (R. Bezerra Braga’s PhD, 2013), and the detection of anomalies in sequential spatiotemporal data forming trajectories, applied to the maritime surveillance domain (M. Pellissier’s PhD, 2013).