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In this paper we present a hybrid model for real-time query processing over data stream collected by mobile air quality sensors. First, we introduce a novel indexing scheme for representing air quality and use it for generating and evaluating a static model over a yearly dataset. Then, this model is combined with a dynamic nearest-neighbor approach for real-time updates, and implemented into the Global Sensor Network (GSN) middleware, with added support for model queries.
Athanasios Nenes, Julia Schmale, Andrea Baccarini, Roman Pohorsky
Michel Bierlaire, Marija Kukic
Dusan Licina, Shen Yang, Maria Viviana Gonzalez Serrano