The thesis analyses the construction of SELF set and the principle of the choosing of character code as well as its evolution. Using a model for network intrusion detection, it describees how to express the phenotype and genotype of a character code.

• 对人工免疫系统中SELF集的构造和特征码的选取、演化进行了分析,以网络入侵检测的AIS为例,对特征码的表现型和基因型做了详细描述。