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。

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Then, with acetaldehyde productivity taken as the objective function, the optimum operations are found by means of DFP method.

然后，以乙醛收率为目标函数，应用DFP法寻求最佳操作条件。

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Particularly, it is proved that if DFP or PSB matrix updating formulae are used, then our method will be convergent superlinearly under some conditions.

本文将集中讨论局部收敛性，特别是证明了在使用DFP或PSB等矩阵校正公式时，修正后的方法在一定的条件下是超线性收敛的。

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The minister was also asked about the number of department of finance (DFP) staff based in West Tyrone.

BBC: Question Time

The session concluded with an evidence session on industrial derating with DFP officials.

BBC: Finance Committee

At different times throughout the year, government departments examine their own spending in what are called monitoring rounds when unspent money is returned to the Department of Finance and Personnel (DFP).

BBC: Invest Northern Ireland set to return millions of pounds