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Improving nearest neighbor classification using Ensembles of Evolutionary Generated Prototype Subsets

delete2016-07-01
delete13
PRE
AI
N
Nele Verbiest
S
Sarah Vluymans *
C
Chris Cornelis
N
Nicolás García‐Pedrajas
Y
Yvan Saeys
DOI:10.1016/j.asoc.2016.03.015delete
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摘要

摘要

En 中文
One of the most accurate types of prototype selection algorithms, preprocessing techniques that select a subset of instances from the data before applying nearest neighbor classification to it, are evolutionary approaches. These algorithms result in very high accuracy and reduction rates, but unfortunately come at a substantial computational cost. In this paper, we introduce a framework that allows to efficiently use the intermediary results of the prototype selection algorithms to further increase their accuracy performance. Instead of only using the fittest prototype subset generated by the evolutionary algorithm, we use multiple prototype subsets in an ensemble setting. Secondly, in order to classify a test instance, we only use prototype subsets that accurately classify training instances in the neighborhood of that test instance. In an experimental evaluation, we apply our new framework to four state-of-the-art prototype selection algorithms and show that, by using our framework, more accurate results are obtained after less evaluations of the prototype selection method. We also present a case study with a prototype generation algorithm, showing that our framework is easily extended to other preprocessing paradigms as well. (C) 2016 Elsevier B.V. All rights reserved.
Keyword:
Classification
Evolutionary algorithms
K Nearest Neighbor
Ensembles
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Applied Soft Computing 封面图
Applied Soft Computing
IF:
6.6
论文数:
1.4W
被引数:
4.8W

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VIB
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Ghent University
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universidad de cordoba
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引用论文

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