First we use the probability statistics method to extract the characters from the artificial DNA sequences whose categories are known. Thu s we can get the character vectors of the DNA sequences and input them as sample s into BP neuron NN for learning.

• 首先应用概率统计的方法对 2 0个已知类别的人工DNA序列进行特征提取 ,形成DNA序列的特征向量 ,并将之作为样本输入BP神经网络进行学习。