preconditioner 中文意思是什麼

preconditioner 解釋
預調節器
  1. With the help of metis, which is a software package in static graph partitioning, we construct a type of block jacobi preconditioner

    J時十u個1任用問題，分別用該分解作近似川j i 』 d寸十八』 。
  2. The preconditioner m is derived on the base of saor and the alternating method. then we use conjugate gradient method to solve the preconditioned system max = mb

    這種方法基於saor迭代法以及交錯法，構造了預條件子m ，然後利用共軛梯度法來求解預條件方程max = mb 。
  3. In the first part, we study three kinds of pre - conditioners - - block - triangular preconditioner, constraint preconditioner and block - diagonal preconditioner respective1y and fast iterative so1vers for indefinite 2 by 2 b1ock linear systems with zero ( 2, 2 ) block. the spectrum and form of eigenvalues of each preconditioned nlatrix are presented. all of the three kinds of preconditioned linear systems are so1ved by gmres ( 20 ) and theii efficiencies are cornpared

    在第一部分中，我們研究了三種不同的預條件矩陣一塊三角預條件矩陣、約束預條件矩陣和塊對角預條件矩陣作用到2 2塊線性系統（其中右下角塊為零）以後的快速迭代解法，給出了預條件作用后系統的特徵值的譜和形式，比較了三種不同預條件作用后採用cmres （ 20 ）方法求解的有效性。
  4. The other are a hybrid preconditioning strategy, in which a simple pivoting preconditioner is used in combination with the standard inverse - midpoint method and a new scheme for selecting the real point in formulating interval newton equation

    使用混合預處理和優化實數向量：所謂混合預處理，就是聯合了標準中點逆矩陣預處理和中樞預處理。優化實數向量就是選擇合適的實數向量來縮小線性區間等式的解向量n （ x ）所包括的范圍。
  5. Some preconditioner technique is also studied to improve the condition number and further accelerate iterations, comparisons are made between them by numerical results

    本文還研究了幾種預條件技術，用於改善運算元的條件數，進一步加速迭代，同時用數值結果對比了各自的優劣。
  6. A preconditioner for the simulation using harmonic balance

    預條件在諧波平衡模擬演算法中的應用
  7. The methods and techniques in writing the preconditioner of the finite element modeling of semi - rigid connections with programming language c are mainly introduced

    主要介紹用c語言編寫樑柱半剛性連接節點有限元模型前處理時的方法和技巧。
  8. Due to the convergence of cg method is strongly dependent on the condition number of the hessian, the inexact newton method with cg subiterations will be powerful if these cg subiterations are replaced by preconditioned cg subiterations with suitable preconditioner

    由於cg法的收斂狀態強烈的依賴于海色陣的條件數，所以用條件預優共軛梯度法（ pcg ）替代cg法會得到更好的效果。
  9. Instead, there needs to store only the original coefficient matrix, some auxiliary matrices for the preconditioner and several vectors in the iteration methods. further, the core of the iteration is the matrix - vector multiplication and the solution of the auxiliary equations corresponding to the preconditioner. if the solution of the auxiliaries spend not very much, the computational cost in each iteration step will be very cheap, due to the fact that the sparsity of the matrix can be exploited sufficiently

    與直接法相比，迭代法只需存儲原系數矩陣、對應于預處理的幾個輔助矩陣與少量幾個向量，且迭代中除求解輔助線性方程組外，其餘的計算主要是稀疏矩陣與向量乘積，從而能充分利用稀疏性減少計算量，但迭代法的收斂速度一般與系數矩陣的譜分佈有關。
  10. To accelerate the iterative solution and reduce the iterations, a physically based near - field preconditioner is employed and parallelized. the numerical results show a good preconditioning performance. notifying that the selection standard of the near field preconditioner is physically based, we make some modifications and design a novel data - based preconditioner,

    為了加速迭代求解，減少迭代次數，這里採用了一種基於物理概念的近場預條件，並將之并行化，結果表明，該方法實現了較好的預條件效果。
  11. Particularly for navier - stokes equation, we will compare the gmres methods with different preconditioned. we make some variances from the hss preconditioner ( [ 15 ] ), that are ma1 - ma4 in our paper. comparing with block triangular preconditioner we will find that the cpu time for ma1 is the smallest

    對navier - stokes方程的求解，我們重點是比較不同預條件的gmres方法，對基於對稱，反對稱分裂（ hss ）的預條件（ [ 15 ] ） ，我們提出幾種變形，本論文分別用m _ （ 1 ? m _ （ 4 ）來表示，並用它們和約束預條件做比較，結果表明，在計算時間上m _ （ 1 ）是最少的，最後我們對ep線性方程組的廣義逆解的擾動分析的某些結果也通過數值實驗給予驗證。
  12. Finally, a fipwa based on a novel integral equation ? modified efie has been developed, which is especially suitable for analyzing scattering of irregular targets. the preconditioner technique presented before is also applied to it. the numerical results in this paper agree well with measurement results or results

    最後，本文研究了基於一種新型積分方程形式修正電場積分方程的快速非均勻平面波演算法，用於高效求解非常規目標散射，並用前述預條件技術進一步提高該方法的計算效率。
  13. Abstract : a new preconditioner is proposed in the preconditioned conjugate gradient method ( pcg ) for solving the problem arising from image restoration. the condition number of the new preconditioned system is proved to be much less than the original one. numerical results show that the new method is better than the classical pcg

    文摘:在圖像恢復實際模型的預條件共軛梯度法中，提出了一種新的預處理運算元.將新的預處理運算元應用於原來的系統，證明了其條件數得到大大的改善.實驗結果表明，新的預處理運算元具有很大優越性，比傳統的預處理運算元具有更快的收斂速度
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