Comparison of hybrid binary GWO-PSO algorithm with feature selection methods by using machine learning classifiers

Öz

In the field of machine learning, feature selection methods used in the pre-processing of data for the classifier have become very popular. Instead of the whole dataset, it is important to create a new sub-dataset by discarding the irrelevant and redundant variables in the dataset to make the data ready for analysis. In this way, both the performance of the learning classifier will increase, and cost and time savings will be achieved. In this study, the performance of the hybrid binary grey wolf optimization - particle swarm optimization (BHGWOPSO) algorithm with machine learning methods is investigated. In addition, a comparison was made between BHGWOPSO and other feature selection methods such as principial component analysis and filter methods in contrast to literature. Thus, it is aimed to show which of the different feature selection methods will work better. For this purpose, five different benchmark datasets with different number of features were selected. Both feature selection methods and machine learning classifiers were compared with each other using the accuracy metric. As a result of the comparisons, it was observed that a different feature selection method and a different classifier had higher accuracy values for each data set.

Anahtar Kelimeler

• Binary hibrid optimization
• Feature selection
• Learning classifiers
• Wrapper method

Hibrit ikili GWO-PSO algoritmasının makine öğrenmesi sınıflandırıcıları kullanılarak özellik seçim yöntemleriyle karşılaştırılması

Öz

Makine öğrenmesi alanında sınıflandırıcı için verinin ön işlemesinde kullanılan değişken seçme yöntemleri oldukça popüler bir hale gelmiştir. Tüm veri seti yerine, veri setindeki değişkenlerden ilgisiz ve gereksiz olanların atılarak yeni bir alt veri kümesi oluşturulması veriyi analize hazır hale getirmek için önemlidir. Bu sayede öğrenme sınıflandırıcının hem performansı artacak hem de maliyet ve zaman bakımından tasarruf sağlanabilecektir. Bu çalışmada hibrit ikili gri kurt optimizasyon-parçacık sürü optimizasyon (BHGWOPSO) algoritmasının makine öğrenmesi yöntemleriyle performansı araştırılmıştır. Ayrıca simülasyonlarda literatürden farklı olarak BHGWOPSO ile diğer özellik seçim yöntemlerinden temel bileşen analizi ve filtre yöntemler kullanılarak da karşılaştırma yapılmıştır. Böylelikle farklı özellik seçim yöntemlerinin hangisinin daha iyi çalışacağının gösterilmesi amaçlanmıştır. Bu amaçla farklı özellik sayılarına sahip beş farklı ölçüt veri seti seçilmiştir. Hem özellik seçim yöntemleri hem de makine öğrenmesi sınıflandırıcıları birbirleriyle doğruluk metriği kullanılarak karşılaştırılmıştır. Karşılaştırmalar sonucunda her bir veri seti için farklı bir özellik seçim yöntemin ve farklı bir sınıflandırıcının daha yüksek doğruluk değerine sahip olduğu görülmüştür.

Anahtar Kelimeler

• İkili hibrit optimizasyon
• Özellik seçimi
• Öğrenme sınıflandırıcıları
• Sarmal yöntem.

Kaynakça

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