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Feature weighting as a tool for unsupervised feature selection

Panday, D and Cordeiro de Amorim, R and Lane, P (2018) 'Feature weighting as a tool for unsupervised feature selection.' Information Processing Letters, 129. 44 - 52. ISSN 0020-0190

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Abstract

Feature selection is a popular data pre-processing step. The aim is to remove some of the features in a data set with minimum information loss, leading to a number of benefits including faster running time and easier data visualisation. In this paper we introduce two unsupervised feature selection algorithms. These make use of a cluster-dependent feature-weighting mechanism reflecting the within-cluster degree of relevance of a given feature. Those features with a relatively low weight are removed from the data set. We compare our algorithms to two other popular alternatives using a number of experiments on both synthetic and real-world data sets, with and without added noisy features. These experiments demonstrate our algorithms clearly outperform the alternatives.

Item Type: Article
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 22 Sep 2017 13:50
Last Modified: 07 Apr 2021 10:16
URI: http://repository.essex.ac.uk/id/eprint/20406

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