A Novel Bio-Inspired Approach for Multilingual Spam Filtering

Hadj Ahmed Bouarara, Reda Mohamed Hamou and Abdelmalek Amine
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Hadj Ahmed Bouarara: GeCode Laboratory, Department of Computer Science, Tahar Moulay University of Saida, Saida, Algeria
Reda Mohamed Hamou: GeCode Laboratory, Department of Computer Science, Tahar Moulay University of Saida, Saida, Algeria
Abdelmalek Amine: GeCode Laboratory, Department of Computer Science, Tahar Moulay University of Saida, Saida, Algeria

International Journal of Intelligent Information Technologies (IJIIT), 2015, vol. 11, issue 3, 45-87

Abstract: In today's digital world the email service has revolutionized the sphere of electronic communication. It has become a veritable social phenomenon in our daily life. Unfortunately, this technology has become incontestably the original source of malicious activities especially the plague called undesirable emails (SPAM) that has grown tremendously in the last few years. The battle against spam emails is extremely fierce. This paper deals with an intelligent spam filtering system called artificial heart-lungs system (AHLS) mimicked from the biological phenomenon of general circulation and oxygenation of blood. It is composed of different steps: Selection to stop automatically emails with undesirable identifier. Multilingual pre-processing to treat the problem of multilingual spam emails and vectoring them. Heart filter and lungs filter to classify unwelcome email in the spam folder and welcome email in the ham folder to present them to the recipient. The method uses an automatic updating of learning basis and black list, and a ranking step to order the spam mails according to their spam relevancy. For the authors' experimentation, they have constructed a new dataset M.SPAM composed of emails pre-classified as spam or ham with different language (English, Spanish, French, and melange) and using the validation measures (recall, precision, f-measure, entropy, accuracy and error, false positive rate and false negative rate, ROC and learning curve). The authors have optimized the sensitive parameters (text representation technique, lungs filters, and the size of initial leaning basis). The results are positive compared to the result of other bio-inspired techniques (artificial social bees, artificial social cockroaches), supervised algorithm (decision tree C4.5) and automatic algorithm (K-means). Finally, a visual result mining tool was developed in order to see the results in graphical form (3d cub and cobweb) with more realism using the functionality of zooming and rotation. The authors' aims are to eliminate a large proportion of unwelcome email, treated the multilingual emails, ensuring an automatic updating of their system and poses a minimal risk of eliminating ham email.

Date: 2015
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