Title
Learning causal dependencies to etect and diagnose faults in sensor networks.
Abstract
Exploiting spatial and temporal relationships in acquired datastreams is a primary ability of Cognitive Fault Detection and Diagnosis Systems (FDDSs) for sensor networks. In fact, this novel generation of FDDSs relies on the ability to correctly characterize the existing relationships among acquired datastreams to provide prompt detections of faults (while reducing false positives) and guarantee an effective isolation/identification of the sensor affected by the fault (once discriminated from a change in the environment or a model bias). The paper suggests a novel framework to automatically learn temporal and spatial relationships existing among streams of data to detect and diagnose faults. The suggested learning framework is based on a theoretically grounded hypothesis test, able to capture the Granger causal dependency existing among datastreams. Experimental results on both synthetic and real data demonstrate the effectiveness of the proposed solution for fault detection.
Year
DOI
Venue
2014
10.1109/INTELES.2014.7008983
IES
Keywords
DocType
Citations 
hidden markov models,mathematical model,fault detection,vectors,zinc,predictive models
Conference
0
PageRank 
References 
Authors
0.34
3
3
Name
Order
Citations
PageRank
Cesare Alippi11040115.84
Manuel Roveri227230.19
Francesco Trovò3437.58