Title
Ensemble of optimized echo state networks for remaining useful life prediction.
Abstract
The use of Echo State Networks (ESNs) for the prediction of the Remaining Useful Life (RUL) of industrial components, i.e. the time left before the equipment will stop fulfilling its functions, is attractive because of their capability of handling the system dynamic behavior, the measurement noise, and the stochasticity of the degradation process. In particular, in this paper we originally resort to an ensemble of ESNs, for enhancing the performances of individual ESNs and providing also an estimation of the uncertainty affecting the RUL prediction. The main methodological novelties in our use of ESNs for RUL prediction are: i) the use of the individual ESN memory capacity within the dynamic procedure for aggregating of the ESNs outcomes; ii) the use of an additional ESN for estimating the RUL uncertainty, within the Mean Variance Estimation (MVE) approach. With these novelties, the developed approach outperforms a static ensemble and a standard MVE approach for uncertainty estimation in tests performed on a synthetic and two industrial datasets.
Year
DOI
Venue
2018
10.1016/j.neucom.2017.11.062
Neurocomputing
Keywords
Field
DocType
Echo state networks,Recurrent neural networks,Ensembles,Prediction uncertainty,Prediction Intervals,Differential Evolution
Variance estimation,Recurrent neural network,Differential evolution,Prediction interval,Uncertainty estimation,Artificial intelligence,Degradation process,Mathematics,Machine learning
Journal
Volume
ISSN
Citations 
281
0925-2312
5
PageRank 
References 
Authors
0.40
34
6
Name
Order
Citations
PageRank
Marco Rigamonti181.49
Piero Baraldi223621.96
Enrico Zio3777.43
Indranil Roychoudhury4676.19
Kai Goebel518922.36
Scott Poll6565.60