In this paper, the relationship of DFP variable metric method and FR conjugate gradient method is investigated.
研究了求解无约束极值问题的DFP变尺度法和FR共轭梯度法的关系问题。
The interval of the initial stresses and elastic modulus can be obtained by using the constrained variable metric method for the present model.
并采用约束变尺度方法求解该反演模型，获得地应力和弹性模量所在区间范围。
The interval of the initial stresses and elastic modulus can be obtained by using the constrained variable metric method to solve the present model.
并采用约束变尺度方法求解该反演模型，获得地应力和弹性模量所在区间范围。
The improved approximate expressions are proposed to create the sequential approximation problems which are solved with the constrained variable metric method.
用该近似函数形成结构优化原问题的序列近似问题，再用约束变尺度法解近似问题。
The one dimension search method of second differential algorithm is used in the Variable metric method of BFGS.
在BFGS变尺度算法中所用的一维搜索方法是二次插值算法。
The one dimension search method of second differential algorithm is used in the Variable metric method of BFGS.
在BFGS变尺度算法中所用的一维搜索方法是二次插值算法。
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