图像重建常常被转化为解非线性无约束极值问题。

The image reconstruction is often converted to be the nonlinear unconfined extreme problem.

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同时针对神经网络易于陷入局部极值、结构难以确定和泛化能力较差的缺点，引入了能很好解决小样本、非线性和高维数问题的支持向量回归机来进行油气田开发指标的预测；

The method of support vector regression which can well resolve the problem with the insufficient swatch, nonlinear and high dimension is introduction to predict the development index of gas-field.

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许多经济系统中的优化问题，可化为用单值非线性算子或多值算子形成约束条件的条件极值问题。

All know that most of the optimization of economic system can be converted into conditional extreme value problem which takes nonlinear operator or multi operator as constraints.

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