Browse wiki

From ISLAB/CAISR
Publications:A novel approach to estimate proximity in a random forest : An exploratory study
Abstract <p>A data proximity matrix is an imp<p>A data proximity matrix is an important information source in random forests (RF) based data mining, including data clustering, visualization, outlier detection, substitution of missing values, and finding mislabeled data samples. A novel approach to estimate proximity is proposed in this work. The approach is based on measuring distance between two terminal nodes in a decision tree. To assess the consistency (quality) of data proximity estimate, we suggest using the proximity matrix as a kernel matrix in a support vector machine (SVM), under the assumption that a matrix of higher quality leads to higher classification accuracy. It is experimentally shown that the proposed approach improves the proximity estimate, especially when RF is made of a small number of trees. It is also demonstrated that, for some tasks, an SVM exploiting the suggested proximity matrix based kernel, outperforms an SVM based on a standard radial basis function kernel and the standard proximity matrix based kernel. © 2012 Elsevier Ltd. All rights reserved.</p>sevier Ltd. All rights reserved.</p>
Author Cristofer Englund + , Antanas Verikas +
DOI http://dx.doi.org/10.1016/j.eswa.2012.05.094  +
Diva http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:548335
EndPage 13050  +
Issue 17  +
Journal Expert systems with applications  +
PublicationType Journal Paper  +
Publisher Elsevier  +
StartPage 13046  +
Title A novel approach to estimate proximity in a random forest : An exploratory study  +
Volume 39  +
Year 2012  +
Has queryThis property is a special property in this wiki. Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study + , Publications:A novel approach to estimate proximity in a random forest : An exploratory study +
Categories Publication  +
Modification dateThis property is a special property in this wiki. 30 September 2016 20:40:49  +
show properties that link here 

 

Enter the name of the page to start browsing from.