1) modified L-curve criterion
改造L-曲线准则
2) L-curve criterion
L曲线准则
1.
The L-curve criterion and the generalized cross valida-tion(GCV)method were both employed to attain the optimal regularization parameters for Tikhonov and TSVD regulari-zation method.
为了正确选择正则化方法,在基于边界元方法的近场声全息理论基础上,分析了截断奇异值法和Tikhonov正则化方法的异同点,阐述了通过曲率求解L曲线拐角点的基本原理,并将L曲线准则和广义交叉检验法应用于截断奇异值正则化方法最优截断点的选取。
2.
To control the effect of measurement errors on the solutions,the standard Tikhonov regularization method together with L-curve criterion were used to the process of reconstruction.
针对任意形状声源识别和定位问题,应用边界元法的近场声全息理论和标准Tikhonov正则化方法来控制场点声压测量误差对表面振速重构解的扭曲影响,由L曲线准则确定最优正则化参数,并通过实验证实了所述方法的有效性。
3) L-curve criterion
L-曲线准则
1.
Some details of the improvements include the adoption of well-known L-curve criterion with a speed-up technique for a rough initial value of regularization parameter and the iteration number of CGLS method is determined adaptively by precision of problems.
针对噪声水平未知的情况,改进文献提出的双参数(a、N)图像恢复正则化框架,实现正则参数口基于L-曲线准则迭代确定、共轭梯度最小二乘法(CGLS)迭代次数N由问题精度要求自适应产生及基于粗糙初值的正则参数迭代初值的快速改进。
2.
To tackle the ill-conditioning problem of the resultant linear system of equations,the trucated regular value decomposition(TSVD) based on the L-curve criterion is used to choose the regularization parameter.
用截断奇异值分解(TSVD)法求解所得病态线性方程组,用L-曲线准则确定正则化参数。
4) curve transforming
曲线改造
1.
Based on the curve transforming practice in the five speed-raising projects, this paper investigates the reasonable way of how to determine the curve transforming scheme.
本文结合五次提速工程中曲线的改造实践,就曲线改造方案的合理确定进行了探讨。
5) C&L criterion
C&L准则
6) L*MAD rule
L*MAD准则
补充资料：Hesse曲线(代数曲线的)
Hesse曲线(代数曲线的)
Hessian (algebraic curve)
11油限曲线(代数曲线的)【H台自11(.妙如允.抖e);recc咖，T~aaa，即r药pa一吸ee二o‘二p.助蓝] n次代数曲线(司罗玩水c~)的He丈祀曲线就是其极二次曲线能分裂为两条直线的点的集合，也是第一极曲线的二重点构成的集合.n次非奇异曲线的He丈七曲线是一条次数为3伪一2)、类为3(n一2)(3n一7)的曲线.设介O是这条n次曲线的齐次坐标方程，关丘=刁:f/刁xi刁、，则它的He丈犯曲线的定义方程为 !不:关:五，} }五:关:五31=0. }人，人2人3}特征不等于3时的三次非奇异曲线的H既七曲线与这条曲线交于9个通常拐点.因O.H改e(l 844)而得名. A .E.H困阳。B撰
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参考词条