Comput. Biol. Med. - Pairwise FCM based feature weighting for improved classification of vertebral column disorders.

Tópicos

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Resumo

In this paper, an innovative data pre-processing method to improve the classification performance and to determine automatically the vertebral column disorders including disk hernia (DH), spondylolisthesis (SL) and normal (NO) groups has been proposed. In the classification of vertebral column disorders' dataset with three classes, a pairwise fuzzy C-means (FCM) based feature weighting method has been proposed. In this method, first of all, the vertebral column dataset has been grouped as pairwise (DH-SL, DH-NO, and SL-NO) and then these pairwise groups have been weighted using a FCM based feature set. These weighted groups have been classified using classifier algorithms including multilayer perceptron (MLP), k-nearest neighbor (k-NN), Naive Bayes, and support vector machine (SVM). The general classification performance has been obtained by averaging of classification accuracies obtained from pairwise classifier algorithms. To evaluate the performance of the proposed method, the classification accuracy, sensitivity, specificity, ROC curves, and f-measure have been used. Without the proposed feature weighting, the obtained f-measure values were 0.7738 for MLP classifier, 0.7021 for k-NN, 0.7263 for Naive Bayes, and 0.7298 for SVM classifier algorithms in the classification of vertebral column disorders' dataset with three classes. With the pairwise fuzzy C-means based feature weighting method, the obtained f-measure values were 0.9509 for MLP, 0.9313 for k-NN, 0.9603 for Naive Bayes, and 0.9468 for SVM classifier algorithms. The experimental results demonstrated that the proposed pairwise fuzzy C-means based feature weighting method is robust and effective in the classification of vertebral column disorders' dataset. In the future, this method could be used confidently for medical datasets with more classes.

Resumo Limpo

paper innov data preprocess method improv classif perform determin automat vertebr column disord includ disk hernia dh spondylolisthesi sl normal group propos classif vertebr column disord dataset three class pairwis fuzzi cmean fcm base featur weight method propos method first vertebr column dataset group pairwis dhsl dhno slno pairwis group weight use fcm base featur set weight group classifi use classifi algorithm includ multilay perceptron mlp knearest neighbor knn naiv bay support vector machin svm general classif perform obtain averag classif accuraci obtain pairwis classifi algorithm evalu perform propos method classif accuraci sensit specif roc curv fmeasur use without propos featur weight obtain fmeasur valu mlp classifi knn naiv bay svm classifi algorithm classif vertebr column disord dataset three class pairwis fuzzi cmean base featur weight method obtain fmeasur valu mlp knn naiv bay svm classifi algorithm experiment result demonstr propos pairwis fuzzi cmean base featur weight method robust effect classif vertebr column disord dataset futur method use confid medic dataset class

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