We define the analytical graph from which we deduce a series of properties and obtain a theorem for evaluating the set of keys in relational schema.
我们定义了分析图，推导了一系列性质，并由此得到关系模式的关键字集的求解定理。
At last, an important theorem, Fuzzy Schema theorem, is given.
还给出了一个重要的定理：模糊模式定理。
It proves a schema theorem for genetic algorithms in which representation schema is based on graph grammar. The effect of crossover and mutation on schemata is described.
证明了一个基于图文法表示机制的遗传算法模式定理，描述了交叉和突变对模式作用的效果。
At last, the schema theorem for uniform crossover operator is proposed considering both schema survival and schema construction. It deepens and generalizes the existing results on schema theorems.
最后对均匀杂交算子给出了在模式的存活和模式的新建共同作用下的模式定理，这一结果深入和推广了目前模式定理的结果。
At last, the schema theorem for uniform crossover operator is proposed considering both schema survival and schema construction. It deepens and generalizes the existing results on schema theorems.
最后对均匀杂交算子给出了在模式的存活和模式的新建共同作用下的模式定理，这一结果深入和推广了目前模式定理的结果。
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