查询词典 prime factorization

For the LS problem, the method of normal equations needs less computation but its computed solution has poor accuracy. If QR factorization is used, more accurate solution can be got. However, its computation is nearly as twice as the method of normal equations.

对于线性最小二乘问题，混合方法的提出是企图在法方程法与QR分解方法之间取得某种平衡，希望能够节省计算量又同时保持计算解达到较高精度，但后者在理论上并未得到证明。

It produce a series of numerical maps. Using GIS spatial analysis, attribution of permanent plot factorization can be analysed.

在此基础上，利用GIS强大的空间分析功能，进行固定样地的多种因子的特征分析。

Matrix is based on a "partial" non-negative matrix factorization generation features space algorithm, which is based on the NMF non-negative...

LNMF是基于"局部"非负矩阵分解生成特征空间的算法，而NMF是基于非负矩阵分解。

Matrix is based on a "partial" non-negative matrix factorization generation features space algorithm, which is based on the NMF no...

LNMF是基于"局部"非负矩阵分解生成特征空间的算法，而NMF是基于非负矩阵分解。

In this paper,discussions are made on the weighted Moore-Penrose inverses of the morphisms with universal factorization in the preadditive category.

的范畴中态射的Moore-Penrose逆，给出具有满单分解态射Moore-Penrose逆存在的充要条件以及计算公式。

preadditive category ; universal factorization ; morphism ; weighted Moore-Penrose inverse

在文献[5，6]中，讨论了具有泛分解态射的广义Moore-Penrose逆存在的充要条件。

In the following two cases:(1)gcd=1;(2) N=p〓, where p denotes the characteristic of the finite field GF, by using the factorization of the polynomial in finite field, the counting function N〓 is showed, the expected value of the linear complexity E〓 is determined, and a useful lower bound on the expected value of the k-error linear complexity E〓 is established.(7) The stability of the lattice structure for pseudorandom number sequences is put forward.

利用多项式的因式分解等简单工具，研究了任意有限域GF上，周期N与p互素以及N ＝P〓这两种情况下，计数函数N〓，的值，即线性复杂皮为c的N-周期序列的个数，并给出了线性复杂度的数学期望E〓的值以及k-错线性复杂度的数学期望E〓的一个有用的下界，这里p表示有限域GF的特征。

In the following two cases:(1)gcd = 1 ;(2)N = p~v, where p denotes thecharacteristic of the finite field GF, by using the factorization of the polynomialin finite field, the counting function N_(N,0) is showed, the expected value of thelinear complexity E_(N,0) is determined, and a useful lower bound on the expectedvalue of the k-error linear complexity E_ is established.(7) The stability of the lattice structure for pseudorandom number sequences is putforward.

利用多项式的因式分解等简单工具，研究了任意有限域GF上，周期N与p互素以及N = p~v这两种情况下，计数函数NN，0 的值，即线性复杂度为c的N-周期序列的个数，并给出了线性复杂度的数学期望EN，0的值以及k-错线性复杂度的数学期望EN，k的一个有用的下界，这里p表示有限域GF的特征。

We thus give a detailed discussion for QCD factorization involved the complete chirally enhanced power corrections for B decays to two light pseudoscalar mesons.

我们将QCD因子化推广到包含弱电企鹅算符的贡献，并论证了QCD因子化的预言是重整化标度无关的，也是规范不变的。

Based on it, a new efficient implementation of preconditioned conjugate gradient is put forward to solve the Gauss-Newton equation and save the cost on computation with the same exactly quadratic convergence to the traditional choleski factorization.

新算法与传统的使用Choleski技术的Gauss-Newton法具有相同的收敛速率，但在求解 Gauss-Newton方程组时减少了代数运算的计算量。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了