“…In brain tumor classification, the most commonly used classifiers are neural network [ 108 , 109 , 110 , 111 , 131 ], support vector machines (SVM) [ 108 , 115 , 124 , 127 , 128 , 129 , 130 , 132 , 133 ], K-nearest neighbor (KNN) [ 112 , 121 , 130 , 134 ], Adaboost [ 126 ], and hybrid models [ 113 , 135 , 136 ]. The neural network was implemented using different architectures, such as feedforward neural network [ 110 , 125 ], multilayer perceptron neural network [ 109 , 137 ], and probabilistic neural network (PNN) [ 111 , 131 ].…”