Constructed based on such an assumption, the BPNN might lead to pay heavy prices when used as a classifier even if the misclassifications took place rarely.
但基于这种假设构造的BPNN在进行分类时，即使是很少的失误也可能付出惨重的代价。
2
The learning of Backpropagation Neural Network (BPNN) aimed at lowering the classification error, usually assuming that all the samples had equal price when misclassifications were made.