University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 31 2 2020 04 01 A Classification Method for E-mail Spam Using a Hybrid Approach for Feature Selection Optimization 165 173 74790 10.22059/jsciences.2020.288729.1007444 EN Zeinab Hassani Department of computer science, Kosar University of Bojnord, Iran. Vahid Hajihashemi Student Member, IEEE Keivan Borna Faculty of Mathematics and Computer Science, Kharazmi University, Tehran, IRAN Iman Sahraei Dehmajnoonie Science and Research Branch, Islamic Azad University, kerman, Iran Journal Article 2019 09 10 Spam is an unwanted email that is harmful to communications around the world. Spam leads to a growing problem in a personal email, so it would be essential to detect it. Machine learning is very useful to solve this problem as it shows good results in order to learn all the requisite patterns for classification due to its adaptive existence. Nonetheless, in spam detection, there are a large number of features to attend as they play an essential role in detection efficiency. In this article, we're working on a feature selection method to e-mail spam. This approach is considered a hybrid of optimization algorithms and classifiers in machine learning. Binary Whale Optimization (BWO) and Binary Grey Wolf Optimization (BGWO) algorithms are used for feature selection and K-Nearest Neighbor (KNN) and Fuzzy K-Nearest Neighbor (FKNN) algorithms are applied as the classifiers in this research. The proposed method is tested on the "SPAMBASE" datasets from UCI Machine learning Repesotries and the experimental results revealed the highest accuracy of 97.61% on this dataset. The obtained results indicateed that the proposed method is suitable and capable to provide excellent performance in comparison with other methods. https://jsciences.ut.ac.ir/article_74790_61ab0c03859ddd061039068b5286b726.pdf