TY - GEN
T1 - A Statistics-Based Sensor Selection Scheme for Continuous Probabilistic Queries in Sensor Networks
AU - Han, Song
AU - Chan, Edward
AU - Cheng, Reynold
AU - Lam, Kam-Yiu
PY - 2005/8
Y1 - 2005/8
N2 - An approach to improve the reliability of query results based on error-prone sensors is to use redundant sensors. However, this approach is expensive; moreover, some sensors may malfunction and their readings need to be discarded. In this paper, we propose a statistical approach to decide which sensors to be used to answer a query. In particular, we propose to solve the problem with the aid of continuous probabilistic query (CPQ), which is originally used to manage uncertain data and is associated with a probabilistic guarantee on the query result. Based on the historical data values from the sensors, the query type, and the requirement on the query, we present methods to select an appropriate set of sensors and provide reliable answers for aggregate queries. Our algorithm is demonstrated in simulation experiments to provide accurate and robust query results.
AB - An approach to improve the reliability of query results based on error-prone sensors is to use redundant sensors. However, this approach is expensive; moreover, some sensors may malfunction and their readings need to be discarded. In this paper, we propose a statistical approach to decide which sensors to be used to answer a query. In particular, we propose to solve the problem with the aid of continuous probabilistic query (CPQ), which is originally used to manage uncertain data and is associated with a probabilistic guarantee on the query result. Based on the historical data values from the sensors, the query type, and the requirement on the query, we present methods to select an appropriate set of sensors and provide reliable answers for aggregate queries. Our algorithm is demonstrated in simulation experiments to provide accurate and robust query results.
UR - https://www.scopus.com/pages/publications/33749044775
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-33749044775&origin=recordpage
U2 - 10.1109/RTCSA.2005.15
DO - 10.1109/RTCSA.2005.15
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0769523463
SN - 9780769523460
SP - 331
EP - 336
BT - Proceedings - 11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications
T2 - 11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA 2005)
Y2 - 17 August 2005 through 19 August 2005
ER -