1) least square criterion
最小二乘准则
1.
In order to exert the efficiency of the maintenance support system furthest, the optimization model of the system is established at the least square criterion, and the genetic algorithms are applied to calculate the optimization model with calculation methods presented, which .
分析了战时维修保障系统的结构功能,给出了维修保障系统的解析模型,提出了维修保障系统的可控参数及指标;为了使维修保障系统发挥最佳效能,以最小二乘准则作为系统的优化准则,建立了维修保障系统的优化模型,采用遗传算法对优化模型进行求解,给出了计算方法,并以计算实例验证了方法的可行性。
2.
This paper rewrites least square criterion J(n)=∑ni=1λ n-i |e(i)| 2 ,one of the optimal criteria of adaptive filtering algorithm,into matrix form,and proposes a new adaptive filtering algorithm by using recursion of generalized inverse matrix to input signal matrix instead of self-correlation matrix.
本文把自适应滤波算法的优化准则之一最小二乘准则 :J(n) =∑ni=1 λn -i|e(i) |2 写为矩阵形式 ,利用矩阵广义逆递推公式直接对输入信号矩阵而不是自相关矩阵进行递推更新 ,得到一种新的自适应滤波算法 。
3.
Through calculating the multiple correlation coefficients between combinations of different function and the recorded data under the least square criterion, the truncated functions which can mostly reflect the studied physical phenomenon was objectively distilled from these data.
针对经典低阶谱模式存在的不足,提出了在最小二乘准则下通过计算不同函数组合与实测资料间的复相关系数,从实际观测资料中客观提取能反映具体物理现象的截断函数的新方案。
3) LS criterion
最小二乘准则
1.
Based on the LS criterion,centralized and distributed parameter estimation data fusion algorithms are presented when all the sensors synchronously measure the same constant parameter more than once,the two algorithms are equivalent and globally optimal.
在最小二乘准则下,提出了多传感器测量系统在多次同步测量时的集中式和分布式参数估计数据融合算法,两种算法完全等价,且都是全局最优的。
5) least-absolute criteria
最小一乘准则
1.
The least-absolute criteria can overcome the drawbacks of least-square criteria,but how to design and implement a regression algorithm based on it is a difficult problem.
最小一乘准则虽然克服了最小二乘准则的不足,但如何在其基础上建立与实现回归算法一直是一个难题。
2.
Five theorems about the properties of the linear regress model based on least-absolute criteria (LRMLAC) are proposed.
文中首先证明了“由“最小一乘”准则确定的直线y=b1x1+ b2x2经过其两个样本点”以及“由最小一乘准则确定的直线y=b1x1+ b2x2+a经过其三个样本点”。
3.
Aimming at the disadvantages of weak generalization ability that exists in most of the current regression functions,combining with the research achievement of statistic learning theory,the paper proposes the optimal regress model based on least-absolute criteria,or LaOR model.
目前回归函数中普遍存在的泛化能力得不到保证的缺点,结合统计学习理论的研究成果,建立了基于最小一乘准则的最优回归模型(LaOR模型)。
6) least absolute criteria
最小一乘准则
1.
At first, the linear regress CFM are presented based on the least absolute criteria and least square criteria.
给出求解组合预测权系数的回归分析方法 ,文章首先给出了基于最小二乘和最小一乘准则的线性回归组合预测模型 ,然后应用最小二乘原理得到权系数最小二乘估计值。
2.
In this paper,a parameters evaluation algorithm based on the least absolute criteria for non linear regress is developed.
给出基于最小一乘准则的非线性回归模型的参数估计算法。
补充资料:非线性最小二乘拟合
分子式:
CAS号:
性质:用最小二乘法拟合非线性方程。有些变量之间的非线性模型,通过变量变换可以化为线性模型,此称为外在线性。而有些变量之间的非线性模型,通过变量变换不能化为线性模型,通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε,其残差平方和。S(θ)是θ的函数,当模型关于θ是非线性的,正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值,拟合非线性回归方程。
CAS号:
性质:用最小二乘法拟合非线性方程。有些变量之间的非线性模型,通过变量变换可以化为线性模型,此称为外在线性。而有些变量之间的非线性模型,通过变量变换不能化为线性模型,通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε,其残差平方和。S(θ)是θ的函数,当模型关于θ是非线性的,正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值,拟合非线性回归方程。
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参考词条