Title :
Optimizing dynamic composition of Bayesian Networks for context sensing and inference
Author :
Frank, Korbinian ; Röckl, Matthias ; Pfeifer, Tom
Author_Institution :
Inst. of Commun. & Navig., German Aerosp. Center (DLR), Oberpfaffenhofen, Germany
Abstract :
Breaking Bayesian Networks for Context Inference from Sensor Networks into smaller Bayeslets is a proven approach for optimizing performance in adaptive resource-constraint ubiquitous computing and networking environments. Automatic selection and composition of such Bayeslets faces the challenge that the related cost factors (inference time, memory consumption) grow exponentially with the number of components. The paper discusses optimising approaches to evaluate the added value of using a particular Bayeslet vs. its cost to prune the dynamic composition graph.
Keywords :
belief networks; graph theory; inference mechanisms; ubiquitous computing; Bayesian networks; Bayeslets; adaptive resource-constraint ubiquitous computing; context inference; context sensing; dynamic composition graph; dynamic composition optimization; sensor networks; Availability; Bayesian methods; Cognition; Context; Entropy; Mutual information; Random variables; Ad hoc & sensor networks; Bayesian Networks; Reasoning; Ubiquitous networking;
Conference_Titel :
Local Computer Networks (LCN), 2010 IEEE 35th Conference on
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4244-8387-7
DOI :
10.1109/LCN.2010.5735730