Wireless sensor networks for habitat monitoring
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
A dual-space approach to tracking and sensor management in wireless sensor networks
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Cleaning and querying noisy sensors
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
A collaborative approach to in-place sensor calibration
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Using sensorranks for in-network detection of faulty readings in wireless sensor networks
MobiDE '07 Proceedings of the 6th ACM international workshop on Data engineering for wireless and mobile access
A virtual machine for sensor networks
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
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We present our ongoing work on data quality problems in sensor networks. Specifically, we deal with the problems of outliers, missing information, and noise. We propose an approach for modeling and online learning of spatio-temporal correlations in sensor net-works. We utilize the learned correlations to discover outliers and recover missing information. We also propose a Bayesian approach for reducing the effect of noise on sensor data online.