As we know, classic optimization techniques are not only troublesome in calculation, but also low efficient for the highly non-linear interval parameter optimal design model (IPODM).
对于高度非线性的城市污水处理厂区间数优化设计模型（ IPODM） ，若采用传统的方法求解，不仅计算繁琐，且难以有效地寻找全局最优解。
Result shows that chaos optimization algorithm is consistent with linear programming; and also proves that it is feasible to solve DEA non-linear model with chaos optimization algorithm.
实例表明：用混沌优化算法对城市供水绩效的DEA评价模型的优化结果与前人采用线性求解结果一致，证明了混沌算法求解DEA模型的可行性。
The DFP method of non-linear optimization is used to calculate shadow price in link. The REM algorithm is improved on the basis of analysis of REM algorithm and optimization flow control model.
在分析REM算法和最优化流控模型的基础上，改用非线性优化理论的变尺度算法计算链路影子价格， 从而改进丁REM算法。
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