The University of Dublin | Trinity College -- Ollscoil Átha Cliath | Coláiste na Tríonóide
Trinity's Access to Research Archive
Home :: Log In :: Submit :: Alerts ::

School of Computer Science and Statistics >
Computer Science >
Computer Science Technical Reports >

Please use this identifier to cite or link to this item:

Title: Overfitting in Wrapper-Based Feature Subset Selection: The Harder You Try the Worse it Gets
Author: Cunningham, Pádraig
Loughrey, John
Sponsor: Science Foundation Ireland
Keywords: Computer Science
Issue Date: 28-Jan-2005
Publisher: Trinity College Dublin, Department of Computer Science
Citation: Cunningham, Pádraig; Loughrey, John. 'Overfitting in Wrapper-Based Feature Subset Selection: The Harder You Try the Worse it Gets'. - Dublin, Trinity College Dublin, Department of Computer Science, TCD-CS-2005-17, 2005, pp11
Series/Report no.: Computer Science Technical Report
Abstract: In Wrapper based feature selection, the more states that are visited during the search phase of the algorithm the greater the likelihood of finding a feature subset that has a high internal accuracy while generalizing poorly. When this occurs, we say that the algorithm has overfitted to the training data. We outline a set of experiments to show this and we introduce a modified genetic algorithm to address this overfitting problem by stopping the search before overfitting occurs. This new algorithm called GAWES (Genetic Algorithm With Early Stopping) reduces the level of overfitting and yields feature subsets that have a better generalization accuracy.
Appears in Collections:Computer Science Technical Reports

Files in This Item:

File Description SizeFormat
TCD-CS-2005-17.pdf239.04 kBAdobe PDFView/Open

This item is protected by original copyright

Please note: There is a known bug in some browsers that causes an error when a user tries to view large pdf file within the browser window. If you receive the message "The file is damaged and could not be repaired", please try one of the solutions linked below based on the browser you are using.

Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback