基于指标规范值的水安全评价的投影寻踪回归模型

Assessment model of water security represented with normalized indices values based on projection pursurt regression

投影寻踪回归的参数矩阵模型用于指标较多的水安全评价,其优化效率和优化效果均受到影响。若适当设置各指标的参照值及指标值的规范变换式,并对指标值进行规范变换,则用规范值表示的不同指标皆与某个规范指标"等效"。因此,只需构造并用免疫进化蛙跳算法优化得出对各指标规范值都能适用的2项指标的NV-PPR(2)和3项指标的NV-PPR(3)水安全评价模型。而当指标数较多(m≥4)时,只需将其分解为若干个NV-PPR(2)和(或)NV-PPR(3)的组合表示即可。实例分析结果表明:基于指标规范值的水安全评价的投影寻踪回归模型具有形式简洁、计算简便和普适通用的特点。

Both the optimizing efficiency and effect of the projection pursuit regression based parameter matrix model are to be affected when it is applied to the water security assessment with more indexes. If the reference values of all the indexes and the gauge transformation forms of the index values are adaptably set,all the different indexes represented by the normalized values are to be equivalent to a certain normalized index. Therefore,it is only necessary to construct and use the immune evolutionary shuffled frog leaping algorithm to optimize and get the models of NV- PPR( 2) and NV- PPR( 3) with 2 indexes and 3 indexes,which are suitable for all the normalized index values. When the number of the indexes are more( m≥4),it is only necessary to decompound the models into several combinations of NV- PPR( 2) and( or) NV- PPR( 3) models. The results from the actual cases show that the projection pursurt regression model for water security assessment based on the normalized index value has the characteristics of simple in form,convenient for calculation and universal for utilization.