preconditioning matrix 中文意思是什麼
preconditioning matrix
解釋
預處理矩陣- preconditioning : 前條件作用
- matrix : n （pl matrices 或matrixes）1 【解剖學】子宮；母體；發源地，策源地，搖籃；【生物學】襯質細胞；間...
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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
第一個改進演算法是用chebyshev多項式加速的子空間迭代法，它是用chebyshev多項式作用初始向量，使其更接近所要求的特徵向量。第二個改進演算法是對每次迭代所得的殘余矩陣直接進行預處理以改善矩陣特徵值的分佈。 -
Recently, clusters with distributed memory are popular for parallel computing systems, and mpi is the actual standard of message passing programming. therefore, the application of clusters based on mpi to computational electromagnetics is studied in this dissertation. the methods are mom based on the integral equation method in conjunction with the preconditioning technique to speed up the iterative solution and a matrix order reducing method, namely the characteristic basis function method ( cbfm )
目前，分散式內存的集群系統是并行計算系統的主流系統， mpi是消息傳遞編程實際上的標準，本文即研究了基於mpi的集群技術在計算電磁學中的應用，採用的方法主要是基於積分方程的矩量法，並結合了加速迭代的預條件技術以及一種矩陣降階方法? ? cbf方法。
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