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DOI: 10.14569/IJACSA.2017.081250
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Examining the Impact of Feature Selection Methods on Text Classification

Author 1: Mehmet Fatih KARACA
Author 2: Safak BAYIR

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 8 Issue 12, 2017.

  • Abstract and Keywords
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Abstract: Feature selection that aims to determine and select the distinctive terms representing a best document is one of the most important steps of classification. With the feature selection, dimension of document vectors are reduced and consequently duration of the process is shortened. In this study, feature selection methods were studied in terms of dimension reduction rates, classification success rates, and dimension reduction-classification success relation. As classifiers, kNN (k-Nearest Neighbors) and SVM (Support Vector Machines) were used. 5 standard (Odds Ratio-OR, Mutual Information-MI, Information Gain-IG, Chi-Square-CHI and Document Frequency-DF), 2 combined (Union of Feature Selections-UFS and Correlation of Union of Feature Selections-CUFS) and 1 new (Sum of Term Frequency-STF) feature selection methods were tested. The application was performed by selecting 100 to 1000 terms (with an increment of 100 terms) from each class. It was seen that kNN produces much better results than SVM. STF was found out to be the most successful feature selection considering the average values in both datasets. It was also found out that CUFS, a combined model, is the one that reduces the dimension the most, accordingly, it was seen that CUFS classify the documents more successfully with less terms and in short period compared to many of the standard methods.

Keywords: Feature selection; text classification; text mining; k-Nearest Neighbors; support vector machines

Mehmet Fatih KARACA and Safak BAYIR, “Examining the Impact of Feature Selection Methods on Text Classification” International Journal of Advanced Computer Science and Applications(IJACSA), 8(12), 2017. http://dx.doi.org/10.14569/IJACSA.2017.081250

@article{KARACA2017,
title = {Examining the Impact of Feature Selection Methods on Text Classification},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2017.081250},
url = {http://dx.doi.org/10.14569/IJACSA.2017.081250},
year = {2017},
publisher = {The Science and Information Organization},
volume = {8},
number = {12},
author = {Mehmet Fatih KARACA and Safak BAYIR}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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