...0和1之间(i=1，2，"´n)，当要素的目标最满意时，ECi的值取1，最差时取0，这种描述ECi的关系式称为功效函数（Efficacy Function），用Xi表示。
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non linear efficacy function 功能函数非线性
Efficacy and function of Loquat 批杷的功效与作用
function and efficacy 功能和效力
Then, an evaluating index system is established for urban land intensively utilizing within the research area. Consequently, we applied information entropy method for determining the weight and quantized urban land intensively utilizing level by using efficacy function.
然后采用信息熵的方法确定权重，利用功效函数来量化城市土地的集约利用水平。
参考来源 - 长三角地区城市土地利用集约度比较研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The Coupling Degree Model includes Efficacy Function, Coupling Degree Function and its index system, in which the index system is crucial and determines its available application.
耦合度计算模型由功效函数、耦合度函数和城市化-生态环境耦合评价指标体系构成，其中指标体系的选择是耦合度计算正确与否的关键。
An optimal decision model of sensor management based on information efficacy function is proposed. The optimality of the allocation algorithm based on predicting covariance is analyzed.
提出了一种基于信息效能函数的传感器管理最优决策模型，分析了以预测误差协方差为分配效能的分配算法的最优性。
These models were designed with efficacy function, coupling degree function, coordination degree function, urbanization-ecological environment index system and artificial neural network BP.
模型涉及了功效函数、耦合度函数、耦合协调度函数和城市化-生态环境耦合评价指标体系以及人工神经bp网络。
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