Representing Uncertainty, Profile and Movement History in Mobile Objects Databases

: This paper presents a model of data for mobile objects. The model is represented by spatial-temporal classes with mobility aspects, and represents the route and the trajectories where the objects move. The problem of mobile databases inaccuracy is approached. A model of trajectory uncertainty for free route is considered, where spatial operators are defined to capture the uncertainty. Another important concept added by the model is the profile and historical movement, that is, an attempt to increase the precision of prevision for object positions not yet observed. Some simulations results are shown, presenting the efficiency of some techniques for calculating the uncertainty of the positioning prevision. Key words: Uncertainty; Profile; Movement History; Mobile Objects; Databases.

• Type: Conference
• Year: 2004
• Where: GEOINFO
• Authors: Eduardo Nóbrega, José Tiago Rolim, Valéria Cesário Times
• Keywords: GEOINFO 2004, GEOINFO 2007, Mobile Databases Inaccuracy, Mobile Objects, Model