classifier role meaning in English

类元角色
元角色

To achieve this goal , this paper design a neural network with three layers in which the first layer play a classifier role and learn with the memory - based learning algorithm while the second and third layers learn with the error back - propagation algorithm
根据这一需要，本文建立了三层神经网络，第一层起分类作用，采用基于记忆学习算法，第二、三层采用误差反馈学习算法。