Abstract and Discrete Models for Uncertain Spatiotemporal Data Erlend Tøssebro and Mads Nygård   View Paper (PDF)   Return to Posters Abstract Summary form only given. We deal with the uncertainty in spatial and spatiotemporal databases. Due to lack of accurate measurements, or rapid changes in time, spatial and spatiotemporal data are often uncertain. Our work presents new abstract and discrete models for uncertain spatial and spatiotemporal information. The models are based on the principle that one knows that the uncertain object, regardless of type, must be within a certain area. DiSC'03 © 2003 Association for Computing Machinery