Design of Improved Version of Sigmoidal Function with Biases for Classification Task in ELM Domain

Abstract

Extreme Learning Machine (ELM) is one of the latest trends in learning algorithm, which can provide a good recognition rate within less computation time. Therefore, the algorithm can sustain for a faster response application by utilizing a feed-forward neural network. In this research article, the ELM method has been designed with the presence of sigmoidal function of biases in the hidden nodes to perform the classification task. The classification task is very challenging with the existing learning algorithm and increased computation time due to the huge amount of dataset. While handling of the stochastic matrix for hidden layer, output provides the lower performance for learning rate and robustness in the determination. To address these issues, the modified version of ELM has been developed to obtain better accuracy and minimize the classification error. This research article includes the mathematical proof of sigmoidal activation function with biases of the hidden nodes present in the networks. The output matrix maintains the column rank in order to improve the speed of the training output weights (β). The proposed improved version of ELM leverages better accuracy and efficacy in classification and regression problems as well. Due to the inclusion of matrix Journal of Soft Computing Paradigm (JSCP) (2021) Vol.03/ No.02 Pages: 70-82 http://irojournals.com/jscp/ DOI: https://doi.org/10.36548/jscp.2021.2.002 71 ISSN: 2582-2640 (online) Submitted: 26.03.2021 Revised: 15.04.2021 Accepted: 4.05.2021 Published: 25.05.2021 column ranking in mathematical proof, the proposed improved version of ELM solves the slow training speed and over-fitting problems present in the existing learning approach.