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本文应用灰色系统理论中的灰色关联分析研究影响乙脑流行的诸因素对乙脑发病率的影响程度.通过灰色关联分析使流行因素与发病率之间的关系逐渐白化,从而为预测和控制乙脑流行提供科学依据.1 灰色关联分析的步骤1.1 无量纲化 将参考数列X_o(K)与比较数列X_i(K)作初值化处理,即用每一个数列的第一个数X_i(1)除其它数X_i(k),以使数列无量纲化,并可得到公共交点,初值化的公共交点是X_i_(1),即第一点.
In this paper, we use gray relational analysis in gray system theory to study the influence of the factors that affect the prevalence of Japanese encephalitis on the incidence of Japanese encephalitis.By gray relational analysis, the relationship between prevalence and incidence is gradually whiten, Brain epidemic provide a scientific basis.1 steps gray correlation analysis 1.1 non-dimensional reference to the reference sequence X_o (K) and the comparison sequence X_i (K) for the initial value of the processing, that is, with each sequence of the first number X_i (1) In addition to other numbers X_i (k), so that the number of non-dimensional series, and can be public intersection, the initialized common intersection is X_i_ (1), the first point.