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1)  Condition number
条件数
1.
A note on condition number of nonlinear equation;
关于非线性方程条件数的注记
2.
Application of condition number to forecasting moving track of typhoon;
条件数在台风移动路径预报中的应用
3.
Experiments and analysis for the condition numbers of random triangular matrices;
随机三角矩阵条件数的数值实验及其分析
2)  conditional number
条件数
1.
With simple mathematic theory, the approximate relation between the statistic parameter of the comput- ing result s error of the analytical solution of one dimension stream water quality equation and that of original data error has been established in this paper, and correspondingly the conditional numbers which can be used to describe the performance of computing problem have been derived.
采用较为简单的数学方法,建立了一维瞬时投源河流水质方程解析解计算结果的统计参数与原始数据的统计参数间的近似关系,推导出了描述该解析解计算问题性态的条件数
2.
By the means of the data processing in advance the spectral conditional number can be reduced greatly,then the result of the fitting is reliable.
通过这种预处理,可大大降低正规方程组的谱条件数,从而使拟合结果的可靠性得到保证。
3.
conditional number] and the variance of the observation noise {w(t)} are bounded in reference [1].
丁锋,谢新民[1]假设协方差阵P0-1(t)(s)的最大特征值与最小特征值之比(即条件数)有界,和系统噪声{w(t)}方差有界,证明了辅助模型辨识其法参数估计的一致收致性。
3)  condition numbers
条件数
1.
Backward Errors and Condition Numbers of Two Systems;
两类系统的向后误差及条件数
4)  conditioning number
条件数
1.
Isotropic design was performed according to the requirement that the conditioning number of Jacobean matrix was always equal to 1.
根据机构雅克比矩阵条件数恒等于1的条件,对机构的各向同性进行设计,得到了具有完全各向同性特性的机构结构尺寸条件。
2.
Based on extensive simulations, the robustness aspect of the two main kinds of camera self-calibration methods, namely the absolute conic based method and the absolute quadric based one, is investigated and compared in terms of the conditioning number of the corresponding coefficient matrix.
对基于绝对二次曲线和基于绝对二次曲面的两类摄像机自标定方法的鲁棒性进行了分析,并从矩阵条件数出发,通过大量仿真实验对两类方法进行了定量比较。
5)  condition index
条件指数
1.
The model includes several submodels as following: the condition index of weapons application schemes, the property of weapons application schemes, the weapons existence and their status, the relative v.
该数学模型包括以下几个子模型:武器运用方案条件指数,武器运用方案性质,武器存在、完好性及准备性,武器运用方案相对有效性,最优武器运用方案的形成。
6)  Spectral condition number
谱条件数
1.
Furthermore, the estimation for the spectral condition number of B~TA~(-1)B is obtained.
在矩阵A为对称正定和矩阵B为列满秩的假设下,研究矩阵BTA-1B的特征值上下界估计,进而给出了BTA-1B的谱条件数的估计·基于以上论述,论证了当矩阵A的条件较好时矩阵Q=BTB可作为矩阵BTA-1B的预条件矩阵·在数值实验中,采用预条件共轭梯度算法(PCG)对Stokes方程求解,实验结果表明Q=BTB确实是一类有效的预条件矩阵·这一结果也和其他文献的数值结果相吻合
补充资料:条件数
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性质:一个矩阵的最大奇异值与其最小奇异值之比。条件数无穷大时,矩阵是奇异的;条件数太大,即条件数的倒数逼近计算机浮点数的精度(例如,在单精度时小于10-6,双精度时小于10-12)时,矩阵是病态的。求解线性方程组时,如系数矩阵的条件数大,既增加要求迭代的次数,又限制了所得解的精度。在回归分析中,条件数可用以判断多重共线性是否存在及其严重的程度。

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