Preliminary research on abnormal brain detection by wavelet-energy and quantum-behaved PSO

It is important to detect abnormal brains accurately and early. The wavelet-energy ( WE) was a successful feature descriptor that achieved excellent performance in various applications; hence, we proposed a WE based new approach for automated abnormal detection, and reported its preliminary results in this study. The kernel support vector machine (KSVM) was used as the classifier, and quantum-behaved particle swarm optimization (QPSO) was introduced to optimize the weights of the SVM. The results based on a 5 x 5-fold cross validation showed the performance of the proposed WE + QPSO-KSVM was superior to "DWT + PCA + BP-NN", " DWT + PCA + RBF-NN", " DWT + PCA + PSO-KSVM", " WE + BPNN", " WE + KSVM", and " DWT + PCA + GA-KSVM" w.r.t. sensitivity, specificity, and accuracy. The work provides a novel means to detect abnormal brains with excellent performance.