How important is data quality? Best classifiers vs best features

NEUROCOMPUTING

卷:470

Article

Moran-Fernandez, Laura¹  Bolon-Canedo, Veronica¹  Alonso-Betanzos, Amparo¹ 

[1] Univ A Coruna, CITIC, La Coruna, Spain

关键词: Feature selection;    Filters;    Preprocessing;    High dimensionality;    Classification;    Data analysis;   

DOI  :  10.1016/j.neucom.2021.05.107

来源: Elsevier

【 摘 要 】

The task of choosing the appropriate classifier for a given scenario is not an easy-to-solve question. First, there is an increasingly high number of algorithms available belonging to different families. And also there is a lack of methodologies that can help on recommending in advance a given family of algorithms for a certain type of datasets. Besides, most of these classification algorithms exhibit a degradation in the performance when faced with datasets containing irrelevant and/or redundant features. In this work we analyze the impact of feature selection in classification over several synthetic and real datasets. The experimental results obtained show that the significance of selecting a classifier decreases after applying an appropriate preprocessing step and, not only this alleviates the choice, but it also improves the results in almost all the datasets tested. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

【 授权许可】

Free