Methods 4 types of curve-model such as Inverse function model, Power function model, Logarithmic function model and S-function model were used to fit the trend of Type-B encephalitis incidence rate.
方法采用倒数函数、幂函数、对数函数、S型函数四个曲线函数拟合乙脑发病率，经比较选择倒数函数为较优拟合模型。
In the application of hedonic price model, it has a wide choice of function forms, including linear function, logarithmic function and semi-logarithmic function, etc.
在特征价格模型的应用中，函数形式的选择具有多样化，包括线性函数、对数函数、半对数函数等。
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