initial vector meaning in English
起始向量
Examples
- Initial vector and iteration control in the matriy iteration method
矩阵迭代法求结构自振特性的初始向量及循环控制 - Initial vector and iterating control in the solution to eigenvalue and eigenvector of a matrix by the matrix iterarion method
乘幂法求矩阵特征向量与特征值的初始向量及循环控制 - To some eigenproblems , the corresponding ritz vectors always converge very slowly even sometimes do n ' t converge when ritz values have converged . so in order to improve the convergence of ritz vectors , firstly , refining - strategy is applied to the davidson method in this paper . the process restarts with the refined ritz vectors as the initial vectors , and then we get the refined block davidson method
为了改善ritz向量的收敛性，本文首先在块davidson方法的执行过程中，运用精化策略，求出相应的精化向量并将其作为初始向量进行重新开始过程，由此得到了精化块davidson方法，并对精化块davidson方法进行了收敛性分析；其次，本文将精化块davidson方法结合收缩技术，提出了收缩的精化块davidson方法。 - This algorithm easily escapes from local optimal solution , have high searching efficiency , simple structure , convenient use . aiming at iteration , optimization and matlab optimization toolbox having low precision and difficulty to choose initial vector on acquiring nonlinear equations ’ solutions , equations ’ solution problem is translated into genetic algorithm optimization problem . nonlinear equations ’ usual genetic
针对迭代法、最优法、 matlab最优化工具箱求解非线性方程组中存在求解精度不高及初始矢量难选等问题，将方程组求解问题转化为遗传算法函数优化问题，建立了非线性方程组通用的遗传算法解法，并将其用于汽车滑行试验数据处理中。 - The main part of this hybrid algorithm is a chebyshev iteration which applies chebyshev polynomials to act on initial vectors and makes the obtained vectors close to the wanted eigenvectors ; the second one is the preconditioning subspace iteration method which uses a preconditioning matrix to impact the residual matrix obtained from the iteration procedure , so the distribution of eigenvalues is improved
第一个改进算法是用chebyshev多项式加速的子空间迭代法，它是用chebyshev多项式作用初始向量，使其更接近所要求的特征向量。第二个改进算法是对每次迭代所得的残余矩阵直接进行预处理以改善矩阵特征值的分布。