Almeida2020_Article_AnEnsembleBasedOnNeuralNetwork.pdf (2.5 MB)
0/0

An ensemble based on neural networks with random weights for online data stream regression

Download (2.5 MB)
journal contribution
posted on 04.11.2019 by Ricardo De-Almeida, Yee Goh, Radmehr Monfared, Maria Teresinha Arns Steiner, Andrew West
Most information sources in the current technological world are generating data sequentially and rapidly, in the form of data streams. The evolving nature of processes may often cause changes in data distribution, also known as concept drift, which is difficult to detect and causes loss of accuracy in supervised learning algorithms. As a consequence, online machine learning algorithms that are able to update actively according to possible changes in the data distribution are required. Although many strategies have been developed to tackle this problem, most of them are designed for classification problems. Therefore, in the domain of regression problems, there is a need for the development of accurate algorithms with dynamic updating mechanisms that can operate in a computational time compatible with today’s demanding market. In this article, the authors propose a new bagging ensemble approach based on Neural Network with Random Weights for online data stream regression. The proposed method improves the data prediction accuracy as well as minimises the required computational time compared to a recent algorithm for online data stream regression from literature. The experiments are carried out using four synthetic datasets to evaluate the algorithm's response to concept drift, along with four benchmark datasets from different industries. The results indicate improvement in data prediction accuracy, effectiveness in handling concept drift and much faster updating times compared to the existing available approach. Additionally, the use of Design of Experiments as an effective tool for hyperparameter tuning is demonstrated.

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001

Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Soft Computing

Volume

24

Pages

9835 - 9855

Publisher

Springer (part of Springer Nature)

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Acceptance date

29/10/2019

Publication date

2019-11-09

Copyright date

2019

ISSN

1432-7643

eISSN

1433-7479

Language

en

Depositor

Dr Radmehr Monfared. Deposit date: 4 November 2019

Licence

Exports