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Considering unstable characteristics of vibration signals with mechanical failure, the Wigner-Ville distributions (WVD) of vibration acceleration signals, which were acquired from the cylinder head in eight different states of valve train, were calculated and displayed in grey images. Non-negative matrix factorization (NMF) as a useful decomposition for multivariate data and neural network ensembles...
There exist numerous schemes and methods to construct neural network ensembles. The most common aggregation strategy in ensemble learning is the simple average. Furthermore, we might expect that an improvement can be achieved if there is a method by which we may weigh the individual members in the ensemble according to their individual performance during training stage. The idea behind this is to...
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