中文摘要：

提出了系统结构、系统结构模式和系统环境模式矩阵等概念，根据系统结构模式与系统环境模式矩阵的匹配程度，建立了模式评价决策模型，并根据系统结构与最优系统结构适应值的比较，制定了评价系统的评价分类准则，并且把遗传算法中相关的模式理论推广到系统结构模式中，得出了一些有意义的结论．

英文摘要：

The concepts of system structure, schema of system structure and matrix for schema of system environment are put forward. A schema-based appraisal decision model is established according to the adaptation degree of schema of system structure to the matrix for schema of system environment; and according to the comparison of system structure and the optimal system structure, the appraisal classification criterion is formulated, At the same time, the relevant theory of schema in genetic algorithm is popularized to schema of system structure, and some conclusions are drawn.