函數的逼近 的英文怎麼說

中文拼音 [hánshǔdebījìn]
函數的逼近 英文
approximation of function
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 的 : 4次方是 The fourth power of 2 is direction
  • 逼 : Ⅰ動詞1 （逼迫; 給人以威脅） compel; force; drive; threaten 2 （強迫索取） extort; exert pressure ...
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  • 逼近 : 1 （靠近 接近） press on towards; gain on [upon]; approach; crowd on; close in on; draw near 2 [...
  1. We compare the approximation of an analytic function f by its taylor polynomial and its poisson partial sum with the same number of terms and illustrate that for functions with limit zero at infinity and for bounded functions the poisson expansion provides a better approximation to the function than the taylor expansion

    在第三章中，介紹了rb曲線與poisson曲線的概念以及基本的幾何性質，指出了poisson基函數與有理bernstein基函數之間存在的關系，並且將解析函數的taylor逼近與poisson逼近進行比較。實例表明，對于在無窮遠處極限為0的函數以及有界函數， poisson逼近比taylor逼近效果要好。
  2. This paper puts forward bp improvable algorithm and exponent prediction pattern depending on neural network " s approach ability to non - linear function. comparing with traditional prediction algorithm, bp algorithm is verified to be feasible and accurate on exponent prediction

    本文藉助神經網路對非線性函數的逼近能力，提出了bp演算法的改進型演算法及基於bp演算法的指數預測模型，通過對比傳統預測演算法，證實改進后bp演算法用於證券預測的可行性及準確性。
  3. Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved

    給出多項式軟化子的幾個性質，並由此證得用多項式一致逼近連續函數的結論。
  4. Except for method of spline interpolation, mra method are used to resolve numerical approximation problems, too

    除了應用樣條函數插值方法外，解決數值逼近問題還可以採用小波分析中多尺度分析的方法。
  5. Secondly, a new adaptive osculatory rational interpolation kernel function is constructed from the point of approximating the ideal interpolating function, the function ' s characteristics, i. e., the space properties, the spectral properties, and the efficiency are analyzed, and the comparision it with other interpolation methods is made

    然後，在圖像采樣和圖像重建理論的基礎上，基於逼近理想插值核函數的思想，構造了一種自適應切觸有理插值函數，對其空域和頻域的性能進行了分析，並與傳統的圖像插值核函數進行了比較。
  6. Approximation of multivarite periodic function anddegree of approximation

    多元周期函數的一類逼近及逼近階估計
  7. Approximation of some classes of periodic functions of two variables by trigonometric polynomials

    一個二元周期函數類用三角多項式的逼近
  8. The basic idea is to find iterative points which converge to optimal point and its corresponding objective function or merit function values converge to optimal value

    其基本思想是構造迭代點來逐步逼近最優點，相應的目標函數值或評價函數值逼近最優值。
  9. In rsdm, binary patterns are replaced by real - valued patterns, accordingly avoiding the coding process ; the outer learning rule is replaced by regression rule, therefore the model has not only the ability of pattern recognition but the ability of function approximation. the prearrangement of the address array bases on the distribution of patterns. if the distribution of patterns is uniform. then the address array is prearranged randomly, otherwise predisposed with the theory of genetic algorithm and the pruneing measure so as to indicate the distribution of patterns and improve the network performance. non - linear function approximation, time - series prediction and handwritten numeral recognition show that the modified model is effective and feasible

    在rsdm中，以實值模式代替二值模式，避免了實值到二值的編碼過程：以回歸學習規則代替外積法，使該模型在具有識別能力的同時具有了對函數的逼近能力；地址矩陣的預置根據樣本的分佈採取不同方法，若樣本均勻分佈，則隨機預置，否則利用遺傳演算法的原理和消減措施來預置地址矩陣，使之反映樣本的分佈，改善網路的性能。
  10. First, it applies fuzzy logical in the abstract and non - linear dealing ability ; second, it applies neural net in the self - study and any functions approaching ability ? through combining above two ability, it can find a best p i d non - linear controlling regularity and achieve controlling on line of the unknown subject etco therefore, it not only can strengthen robust and intelligence of the system, but also make design simple and easily be requiredo in addition, the thesis also does many works on procedure of upper - computer and basic - controller and the whole system designed can be put into work immediately

    根據啤酒發酵過程具有大慣性、時滯和非線性等特點，本論文還提出一種基於神經網路的模糊自適應pid控制方案，它一方面利用模糊邏輯的「概念」抽象能力和非線性處理能力，另一方面利用神經網路的自學習能力和任意函數的逼近能力，通過兩者的有機結合尋找一個最佳的p 、 i 、 d非線性組合控制規律，以實現對未知對象進行在線控制，並具備適應控制環境變化的能力和自學習能力等。
  11. However, due to the complex of computation and the need of the design, sometime we need to use polynomial approximation for a rational curves and surfaces

    然而由於計算的復雜性和設計的需要，有時我們還需要用多項式函數來逼近有理曲線和曲面。
  12. On the rate of convergence of functions and their derivatives by beta operators

    運算元的導數對一類函數的逼近速度
  13. Firstly, the voronovskaja type formula of asymptotic expansion of this kind of operators is given. then the approximation of the bounded variation functions by the kinds of operators is discussed

    第一節給出該運算元的voronovskaja型漸近展開公式；第二節討論該運算元對有界變差函數的逼近。
  14. Approximation order of scale function about m - band multi - wavelet

    進制多小波尺度函數的逼近階
  15. This paper investigates construction of orthogonal multiwavelets and a condition for approximation order of m - band multiscaling functions in frequency domain, introduces m - band scale similarity transformation ( mst ). one can increase the approximation order of multiscaling function with help of mst

    本論文研究了正交多小波的構造， m帶多尺度函數的逼近階頻域條件，引入m帶尺度相似變換（ mst ）並利用其提高m帶多尺度函數的逼近階。
  16. Weighted approximation by multi - meyer - k nig and zeller - type operators

    一類運算元的函數類逼近
  17. It discusses the influence factors of pile groups effect, such as pile space, pile number, pile diameter, pile length and soil parameter etc. subsequently, using linear interpolation function to approximate the soil ' s anti force to piles, the article combines p - y curves with pole system fem. in this way, a new pile - soil interaction element calculated model is designed, the pile - soil interaction element stiffness matrix is deduced, and establishes finite element equation of p - y model, writes the relevant finite element program with matlab language, calculates and analyses pile groups subjected to lateral loads with engineering examples

    隨后，本文將p - y曲線法與桿系有限元法相結合，採用線性插值函數來逼近土對樁的約束反力，得到新的樁?土相互作用的單元計算模型，推導了樁?土相互作用的單元剛度矩陣，建立了p - y模型的有限元求解方程，用matlab語言編制了相應的p - y曲線有限元法計算程序，進行橫向承載樁的計算分析。
  18. The thesis is divided into two parts. in the first part of the thesis, we discuss the solution of the discrete linear systems of the equations by the generalized minimal residual ( gmres ) method

    本文分為兩部分，第一部主要考慮在給定參數（包括積分節點的選擇和核函數的逼近方法）的情況下，如何應用廣義極小剩餘法（ gmres ）求解離散方程組。
  19. The approximation property of projection pursuit wavelet neural network ( ppwnn ) which is applied to non - linear function is studied, the convergence rate is given in this paper also. 3. we demonstrate projection pursuit wavelet neural network ( wppnn ) has a good applicability by the approximation of five non - linear functions and the prediction of sunport and chaos time series and the use of edge detection

    主要工作如下： （ 1 ）建立了投影尋蹤小波神經網路的數學模型、拓撲結構及非線性學習機理； （ 2 ）證明了投影尋蹤小波神經網路可以逼近非線性函數，並給出了其收斂速度； （ 3 ）通過投影尋蹤小波神經絡對五種非線性函數的逼近和對太陽黑子、混沌時間序列的模擬預報以及投影尋蹤小波學習網路在圖象邊緣檢測中的應用，說明該網路具有很強的實用性。
  20. Based on the analysis of the methods for optimizing the fuzzy neural networks before, this paper has finished following works : 1 ) we proposed a learning algorithm based on tabu search for fuzzy neural networks based on the model of anfis proposed by jyh - shing roger jang. then used the system for one variable function ' s approximation. 2 ) based on the first research, we improved the tabu search algorithm for the purpose of approximating complex functions. 3 ) analysis the capabilities of tabu search, and discuss the approximation ability and generalization ability of the fuzzy neural networks system according to the compute results

    本文在對以前的模糊神經網路參數學習演算法進行分析的基礎上，做了以下幾個方面的工作： 1 ）根據禁忌搜索演算法的特點，在jyh - shingrogerjang提出的anfis模型的基礎上，將禁忌搜索演算法應用於模糊神經網路線性和非線性參數的學習上，並將該模型用於單變量函數的逼近； 2 ）在第一階段的基礎上，對演算法進行了改進，使改進后的演算法能夠適用於復雜的ii函數逼近問題; 3 ）根據計算機模擬的結果，對禁忌搜索演算法的性能進行了分析，並對該模糊神經系統的函數逼近能力和泛化能力進行了討論。
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