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平均因子分解法应用于正定矩阵
平均因子分解法,适用于正定矩阵First, let s recall the definition of the Cholesky decomposition: Given a symmetric positive definite square matrix X, the Cholesky decomposition of X is the factorization X=U U, where U is the square root matrix of X, and satisfies:
(1) U U = X
(2) U is upper triangular (that is, it has all zeros below the diagonal).
It seems that the assumption of positive definiteness is necessary. Actually, it is "positive definite" which guarantees the existence of such kind of decomposition. -Average factor decomposition method applied to positive definite matrix First, let s recall the definition of the Cholesky decomposition: Given a symmetric positive definite square matrix X, the Cholesky decomposition of X is the factorization X = UU, where U is the square root matrix of X, and satisfies: (1) UU = X (2) U is upper triangular (that is, it has all zeros below the diagonal). It seems that the assumption of positive definiteness is necessary. Actually, it is positive
- 2022-10-16 04:30:02下载
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% Measure Statistical Dependence 统计依赖测量
% 两个时间序列间统计依赖性测量
% 参考文献:时间序列间统计依赖性测量...
% Measure Statistical Dependence 统计依赖测量
% 两个时间序列间统计依赖性测量
% 参考文献:时间序列间统计依赖性测量的一种改进方法(王海燕 李 文① 陈文彦)- Measure Statistical Dependence Measurement statistical dependence between two time series statistical dependence measurement References: time-series statistical dependence between the measurement of an improved method (Wang Haiyan Lee陈文彦①)
- 2022-03-22 15:57:28下载
- 积分:1
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Artificial intelligence, operations, using the genetic algorithm traveling sales...
人工智能作业,用遗传算法实现的旅行商问题。-Artificial intelligence, operations, using the genetic algorithm traveling salesman problem.
- 2022-05-24 16:37:09下载
- 积分:1
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增量式PID算法
增量式PID算法,用于调速电机,或者其他控制对象,算法简单,易于移植于单片机中,曾用于飞思卡尔电机调速和巡线算法中。
- 2022-05-14 08:57:59下载
- 积分:1
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compressed files is common C language function PDF files, a very comprehensive,...
压缩文件中是C语言常用函数的PDF文档,非常全面,可以满足工程人员的大部分需求。-compressed files is common C language function PDF files, a very comprehensive, engineering staff to meet the needs of the majority.
- 2022-06-13 14:26:50下载
- 积分:1
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LENCH算法,分簇算法改进
在基因表达谱测量的成千上万个基因中,仅有少量基因包含了肿瘤信息,大部分基因与肿瘤并不相关
- 2022-05-30 15:57:09下载
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本程序主要实现了离散时间的傅立叶变换,具有很强的可移值性,原理简单。...
本程序主要实现了离散时间的傅立叶变换,具有很强的可移值性,原理简单。-This procedure has been the main achievement of the discrete-time Fourier transform, has a strong value can be changed, and simple.
- 2022-05-05 00:15:02下载
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文本聚类coforest
资源描述本文主要是实现基于层次的半监督文本聚类的算法。目前文本聚类的算法研究不少,特此贡献一些,望能对有需要的人提供一点帮助。
- 2022-06-02 02:31:49下载
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曲线拟合程序
多项式相关系数的计算方法(多项式形式1)
多项式相关系数的计算方法(多项式形式2)
最小二乘法曲线拟合
三次样条插值(自然边...
曲线拟合程序
多项式相关系数的计算方法(多项式形式1)
多项式相关系数的计算方法(多项式形式2)
最小二乘法曲线拟合
三次样条插值(自然边界条件)-polynomial curve fitting procedures correlation coefficient is calculated (the form of a polynomial) polynomial coefficient of correlation Methods (polynomial form 2) least-squares method curve fitting cubic spline interpolation (natural boundary conditions)
- 2022-03-02 20:53:09下载
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solving nonlinear equations in a way : by using a method of optimizing initial G...
解非线性方程组的一种方法:先用一种优化方法将给定初值(它有可能会使得后续的牛顿法发散)通过一条比较快的途径收敛到精确解附近,得到一个新的初始点,然后再通过牛顿法将新的初始点迭代到精确解(一定的误差范围内)。这种方法的优点在于:它可以将牛顿法快速收敛的优势发挥出来,同时又避免了该方法收敛域比较窄的缺点。-solving nonlinear equations in a way : by using a method of optimizing initial Givens (it might make follow-up to Newton"s law divergence) adopted a relatively fast convergence to the channel near the exact solution, to be a new starting point, and then Newton"s law of the new iteration of the initial point of the exact solution ( some of error). This method has the advantage : it can be rapid convergence of Newton"s method to exploit the advantages while avoiding convergence of the method is relatively narrow domain shortcomings.
- 2022-03-20 10:21:18下载
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