Spiking neural network approaches PCA with metaheuristics

• Published in: Electronics letters 2020-05, Vol.56 (10), p.488-490
• Main Authors: Enríquez-Gaytán, J, Gómez-Castañeda, F, Flores-Nava, L.M, Moreno-Cadenas, J.A
• Format: Article
• Language: English
• Subjects: ABC algorithm; artificial bee colony algorithm; Circuits and systems; experimental scheme; formulated objective function; mean square error methods; meaningful results; metaheuristics; neural nets; neural network; neurophysiology; optimal conductance values; optimisation; PCA function; principal component analysis; SNNs; spiking neurons
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2020.0283

This Letter presents meaningful results that demonstrate the reduction of dimensionality by spiking neural networks (SNNs) on benchmarking data. This experimental scheme includes metaheuristics, namely, the artificial bee colony algorithm (ABC algorithm) for finding optimal conductance values in the SNNs. Therefore, the objective function in the used ABC algorithm leads the SNNs to compute the principal component analysis (PCA), efficiently. The eigendecomposition of the information drawn by the SNNs in the training phase is the base of the formulated objective function. In these experiments, the Izhikevich model represents the spiking neurons, which have biological plausibility with parameters for reproducing a uniform firing rate. The visualisation of clusters in the 3D PCA space, whose sample values are compared with the PCA function in Matlab, is also shown; this comparison demonstrates an acceptable error in the MSE sense.