逼近函數 的英文怎麼說

中文拼音 [jìnhánshǔ]
逼近函數 英文
approximate function
  • : Ⅰ動詞1 (逼迫; 給人以威脅) compel; force; drive; threaten 2 (強迫索取) extort; exert pressure ...
  • : Ⅰ形容詞1 (空間或時間距離短) near; close 2 (接近) approaching; approximately; close to 3 (親...
  • : 名詞1. [書面語] (匣; 封套) case; envelope 2. (信件) letter 3. (姓氏) a surname
  • : 數副詞(屢次) frequently; repeatedly
  • 逼近 : 1 (靠近 接近) press on towards; gain on [upon]; approach; crowd on; close in on; draw near 2 [...
  • 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
  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基與有理bernstein基之間存在的關系,並且將解析的taylor與poisson進行比較。實例表明,對于在無窮遠處極限為0的以及有界, poisson比taylor效果要好。
  2. By means of constructional iterative equation, this paper presents a way to give out the existence and singularity of a type of equational root with gradual approach method

    摘要本文通過構造迭代,利用逐次的方法給出了一類方程根的存在性與唯一性的判斷的一種解決方案。
  3. 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。
  4. 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連續的結論。
  5. Except for method of spline interpolation, mra method are used to resolve numerical approximation problems, too

    除了應用樣條插值方法外,解決問題還可以採用小波分析中多尺度分析的方法。
  6. 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,基於理想插值核的思想,構造了一種自適應切觸有理插值,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進行了比較。
  7. Approximation of multivarite periodic function anddegree of approximation

    多元周期的一類階估計
  8. Approximation of some classes of periodic functions of two variables by trigonometric polynomials

    一個二元周期類用三角多項式的
  9. The parameter control methods are very similar to penalty function methods, both of them are to solve constrained optimization problems by solving a series of sub - unconstrained optimization problems. but parameter control methods are different from penalty function methods. firstly, the penalty coefficient of penalty function methods are preassigned, while the parameters of parameter control methodsare generated automatically according to some rule prescribed

    控制演算法雖然與罰法非常類似,都是通過求解一系列無約束極小化問題來約束優化問題的最優解,但罰法中的罰因子是預先設定的,而參控制演算法中的參是自動產生的。
  10. Rational curves and rational surfaces, which are a class of important approximation functions, are extensive applied in cad / cam

    有理曲線和曲面作為一類重要的逼近函數,在計算機輔助設計與製造中有著廣泛的應用。
  11. This paper approximates non - linear function with wavelet neural network, whose ability of approximation function is discussed in theory

    本文將小波神經網路用於非線性,並從理論上討論了它逼近函數的能力。
  12. By constructing approximate functions and using prior estimate and conversion of variable, it is proved that the inverse problem has weak solution for given initial value, boundary value and the oil output

    通過變量和變換,作逼近函數和估計等方法,證明了對給定的初邊值和石油產量,此反問題存在弱解。
  13. To choose wavelet function based on time - frequency region is put forward, time - frequency region composing of all of these wavelet functions can overlay wholly time - frequency region of non - linear function to approximate

    本文提出了根據逼近函數的時頻空間區域來選擇小波基,使這些小波基共同構成的時頻空間區域覆蓋完逼近函數的時頻空間區域。
  14. Because the choice of fuzzy set functions affects how well a fuzzy system approximates a function and gaussian bell - curve sets give richer fuzzy systems with simple learning laws, we choose gaussian function set as fuzzy set functions

    因為隸屬的選取會影響模糊系統逼近函數的效果,而高斯型隸屬的鐘形曲線只要簡單的學習規則就可以表示豐富的模糊信息,我們選取高斯型隸屬作為模糊集合
  15. We construct a superapproximation function un and have proved that at the nodes the c ? finite element solution uh for the equation has following optimal order superconvergence results we also have proved that at some characteristic points in the elements, both uh and uh have superconvergence results

    我們構造了一個超逼近函數u _ n ,證明了在節點處c ~ 0有限元解u _ h有如下超收斂估計並且已證明了在單元內部的一些特徵點上u _ n , u _ h有超收斂結果。
  16. Bernstein approximation is one kind of classics and abundant research subjects in the theory of approximations, which mainly makes use of good properties and graceful structures of bernstein polynomials to discuss a great deal of relations between bernstein operators and the functions approached by it

    Bernstein論中一類經典而豐富的研究課題,它主要是利用bernstein多項式的良好性質和優美結構來討論其與所逼近函數之間的諸多關系。
  17. In this paper, systemic theoretic analysis of the relationship of stock structure and operating performance is progressed, based on this, theoretic study and demonstration analysis organic fall together, and the neural networks model that can reflect their relationship total and systemic is established. the input variable of the model can reflect the panorama of stock structure, also, it can embodiment other influence factor of company performance. the evaluation target system that can reflect the operating condition of listed companies completely, impersonality and truly is advanced, at the same time, the best result weights confirm method is brought forward, thereby, the fuzzy integrate evaluations method is improved

    本文對股權結構與經營績效之間的關系作了系統的理論分析,並在此基礎上,將理論研究和實證分析有機地結合起來,建立了一個能全面、系統地反映它們之間關系的神經網路模型:該模型的輸入變量在反映股權結構全貌的同時又體現了公司績效的其它影響因素;提出了可以全面、客觀、真實地反映上市公司經營狀況的評價指標體系,同時提出了最佳結果權重確定法,從而改進了模糊綜合評價方法,並利用改進的模糊綜合評價法求出公司經營績效的綜合量化值作為神經網路的期望輸出;改進了神經網路模型的演算法,使其在樣本據相對較少的條件下也能很好地在性態上模擬被逼近函數
  18. Finally, take example for a non - linear function, method mentioned in this paper is used to design wavelet neural network to approximate this function. the computer simulations confirm the method that is brought out in this paper is useful, and prove that wavelet neural network has not only fast convergence and better precision of approximation, but also good capability of forecasting and escaping error

    最後,對於一個實際的非線性,用本文介紹的方法來設計小波神經網路來逼近函數,模擬結果表明該方法的有效性,並且表明小波神經網路在上,網路的收斂速度快,精度高的特點,並且網路具有很好的泛化能力和容錯性。
  19. On the basis of displacement - time series of the slope, a nonlinear dynamic model is set up according to backus generalized linear inversion theory in this paper. due to the equivalence beween autonomous gradient system and catastrophe model, a standard cusp catastrophe model can be obtained through variable substitution. the method is used in analysis of displacement data of huangci landslide and wolongsi landslide and in understanding how slopes evolve before sliding. the result shows that the nonlinear dynamic model can make satisfactory prediction result. is it most important that there is a sudden fall of d, which indicates the occurrence of catastrophe ( when d = 0 )

    研究表明,滑坡變形失穩過程具有混沌和分維特性,可以用分形理論來研究滑坡預測問題,基於對任一連續,至少在較小的鄰域內可以用多項式任意學理論,運用改進的backus廣義線性反演理論,以斜坡位移時間序列為基礎,反演了斜坡演化的非線性動力學模型。並利用自治梯度系統與突變模型的等價性,通過變量代換得到標準的尖點突變模型。
  20. Image fusion based on wavelet transform is presented. by decomposing the images and mask signals with wavelet transform, wavelet coefficients and approximation coefficients at different scales are obtained. with the corresponding coefficients of normalized - mask signals as weighting functions, coefficients are combined in different resolution levels to reduce the effect of the seam

    在基於小波變換的圖像融合中,將待融合圖像與mask信號採用小波分解,得到不同尺度下的小波系,以歸一化mask信號的分解系作為加權,在小波域的不同尺度融合對應系,消除拼接縫的影響。
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