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Random brains
Stockholm University, Faculty of Social Sciences, Department of Computer and Systems Sciences.
2013 (English)In: The 2013 International Joint Conference on Neural Networks (IJCNN): Proceedings, IEEE conference proceedings, 2013, 1-8 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we introduce and evaluate a novel method, called random brains, for producing neural network ensembles. The suggested method, which is heavily inspired by the random forest technique, produces diversity implicitly by using bootstrap training and randomized architectures. More specifically, for each base classifier multilayer perceptron, a number of randomly selected links between the input layer and the hidden layer are removed prior to training, thus resulting in potentially weaker but more diverse base classifiers. The experimental results on 20 UCI data sets show that random brains obtained significantly higher accuracy and AUC, compared to standard bagging of similar neural networks not utilizing randomized architectures. The analysis shows that the main reason for the increased ensemble performance is the ability to produce effective diversity, as indicated by the increase in the difficulty diversity measure.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. 1-8 p.
National Category
Information Systems
Research subject
Computer and Systems Sciences
Identifiers
URN: urn:nbn:se:su:diva-100718DOI: 10.1109/IJCNN.2013.6707026ISBN: 978-1-4673-6128-6 (print)OAI: oai:DiVA.org:su-100718DiVA: diva2:695728
Conference
The 2013 International Joint Conference on Neural Networks (IJCNN), Dallas, Texas, USA, 4-9 August 2013
Available from: 2014-02-12 Created: 2014-02-12 Last updated: 2014-02-19Bibliographically approved

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Boström, Henrik
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