1) Mathod for Judging Inverse Matrix
逆矩阵的判定方法
2) inverse of a square matrix
方阵的逆矩阵
3) matrix discriminant analysis
矩阵判定分析法
1.
Based on the analysis of the advantages and shortages of the matrix discriminant analysis and wavelet network, a new synthetic method which combines the above two algorithms together for credit scoring was introduced.
分析了矩阵判定分析法和小波网络在解决银行信贷信用分类问题上各自的优缺点,并在此基础上将这两种方法结合起来解决银行信贷信用分类问题。
4) inverse of covariance matrixs
协方差矩阵的逆矩阵
1.
This paper puts forward some methods of finding inverse matrixs and pass to solve inverse of covariance matrixs in order to explain inverse matrixs application in portfolio investment.
本文就不同类型矩阵的逆矩阵,给出了几种常见解法,并通过求协方差矩阵的逆矩阵,来说明逆矩阵在证券投资组合中的应
5) Criteria for Block H-matrices
块H-矩阵的判定
6) inverse matrix method
逆矩阵法
1.
Two calculational methods for analyzing the spectrum which measured by indoor low background multi-channels gamma-rays spectometer(Na(Tl)) to get the specific activity of 226Ra, 232Th and 40K of the sample are discussed, they are the spectrum analysis method and the characteristic energy peak method(inverse matrix method) respectively.
论述了以NaI(Tl)晶体为探测器的室内低本底多道γ射线能谱仪用于测量样品中226Ra、232Th和40K放射性比活度的两种计算方法———谱线分解法和特征能量峰法(逆矩阵法),并设计编制程序,分别采用这两种方法对样品谱线进行处理分析,将分析结果与高纯锗γ谱仪分析结果对比,两种方法分析同一样品的相对偏差均≤10%。
补充资料：逆矩阵
逆矩阵
inverse matrix
逆矩阵防口既祀祖咏;o6paT’H“MaTp皿”a」，域k上的方阵A的 矩阵A一’，满足AA一’=A一，A=E，其中E是单位矩阵.一个矩阵的可逆性，等价于它的非奇异性(见非奇异矩阵(non一singularn坦tr议)).对于矩阵A={气11，其逆矩阵是A一’=l，。}，其中 ，‘，一兴， ‘’J detA这里击j是元素:‘j的代数余子式(cofactor).关于计算逆矩阵的方法，见矩阵的求逆(川ve招ion of aTna-加x).张鸿林译
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参考词条