对于多约束则采用了紧约束处理，并用修正的单纯形法进行优化设计。
The optimization problem with multiple constraints is treated by the compact constraint tactics and is solved by the improved simplex method.
研究表明，在挑选紧约束集中，KS函数是一个非常有用、有前途的工具，而这一点，恰是许多优化方法的关键。
The research shows that KS function is a vary useful and prospective tool for selecting the active constraints, which is the key step in many of optimum methods.
然而，MDD所使用的基于代码生成的方法有它不利的方面，这是由于例如所生成代码中的约束、技术不强的开发人员和与模型的紧耦合等因素造成的。
However, the code generation-based approach used by MDD has its own downside, due to things like constraints in generated code, insufficiently skilled developers, and tight coupling to the model.
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