梯度誤差 的英文怎麼說

中文拼音 [tīdùwùchā]
梯度誤差 英文
gradient error
  • 梯 : Ⅰ名詞1 （梯子; 樓梯） ladder; stairs; steps; staircase 2 （姓氏） a surname Ⅱ形容詞（形狀像樓梯的...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 誤 : Ⅰ名詞（錯誤） mistake; error Ⅱ動詞1 （弄錯） mistake; misunderstand 2 （耽誤） miss 3 （使受損害...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 誤差 : error
  1. Compared with the classical bp algorithm, robust adaptive bp algorithm possesses some advantages as following : ( 1 ) increasing the accuracy of the network training by means of using both the relative and absolute residual to adjust the weight values ; ( 2 ) improve the robustness and the network convergence rate through combining with the robust statistic technique by way of judging the values of the samples " relative residual to establish the energy function so that can suppress the effect on network training because of the samples with high noise disturbances ; ( 3 ) prevent entrapping into the local minima area and obtain the global optimal result owing to setting the learning rate to be the function of the errors and the error gradients when network is trained. the learning rate of the weights update change with the error values of the network adaptively so that can easily get rid of the disadvantage of the classical bp algorithm that is liable to entrap into the local minima areas

    與基本bp演算法相比，本文提出的魯棒自適應bp演算法具有以下優點： （ 1 ）與魯棒統計技術相結合，通過訓練樣本相對偏差的大小，確定不同訓練樣本對能量函數的貢獻，來抑制含高噪聲干擾樣本對網路訓練的不良影響，從而增強訓練的魯棒性，提高網路訓練的收斂速度； （ 2 ）採用相對偏差和絕對偏差兩種偏差形式對權值進行調整，提高了網路的訓練精度； （ 3 ）在採用梯度下降演算法對權值進行調整的基礎上，通過將學習速率設為訓練誤差及誤差梯度的特殊函數，使學習速率依賴于網路訓練時誤差瞬時的變化而自適應的改變，從而可以克服基本bp演算法容易陷入局部極小區域的弊端，使訓練過程能夠很快的「跳出」局部極小區域而達到全局最優。
  2. Experimental result indicates that the kgw - xx radio altimeter can provide steady height data at ultra - low altitude, so it can be used as an altitude sensor of a tow target system, and the height data shows a bigger ladder error that affects the precision of the tow target system

    靜態模擬測高試驗結果表明：該高度表可在超低空狀態下提供穩定的高度數據，可以作為某型拖靶系統的高度傳感器；該高度表提供的高度數據存在著較大的階梯誤差，將影響拖靶系統的恆高精度。
  3. In the second chapter, we firstly present a circuit of 8 - bit, 80mhz samples / s thermometer - decoded dac with hierarchical symmetrical switching sequences which will compensate gradient error, on the basis of 8 - bit dac, we then present high frequency, high definition 12 - bit, 80mhz samples / s current - steering dac

    第二章：提出了具有梯度誤差補償的高速8位、 80mhz溫度計碼數模轉換器，並在此基礎上進一步提出了高速、高精度12位、 80mhz采樣率電流舵結構數模轉換器。
  4. Expanded mixed finite element approximations of the parabolic problems are considered. error estimates for the scalar unknwon, its gradient and its flux in l2 - norm are obtained for this new mixed formulation

    通過數值分析進一步說明擴展混合元方法是穩定的，並得到了未知函數、未知函數的梯度和流體流量的l ~ 2 -誤差估計。
  5. Based on this fomulation, expanded mixed finite element approximations of the hyperbolic problems are considered. optimal order error estimates for the scalar unknwon, its gradient and its flux in l2 - norms are obtained for this new mixed formulation

    給出了逼近未知函數、未知函數梯度和流體流量的最優l ~ 2模誤差估計以及擬最優的最大模誤差估計。
  6. In the course of modeling, we present multi - step generalized gradient method and multi - stage curve fitting technique, prove convergence of multi - step generalized gradient method by using differential equation stable theory, analyze the error of multi - stage curve fitting technique by using inner space, creat knowledge base of water network system by using the maximum subordinate principle of and near - select principle of pattern recognition. at last we make the optimal running scheme of water network system based on heuristic search technique of artificial intelligence and global feedback immediate coordination method of large scale system theory

    在建立系統模型的過程中，提出了多步廣義梯度法和多層曲線擬合的建模方法，並用微分方程穩定性理論證明了多步廣度梯度法收斂性，用內積空間的有關知識對多層曲線擬合進行誤差分析;應用模糊數學中的最大隸屬度原則和模糊識別中的擇近原則和人工智慧中狀態空間表示法建立注水系統的知識庫;用人工智慧中的啟發式搜索技術和大系統理論中的具有全局反饋的直接協調法制定注水系統的優化運行方案。
  7. The relationship between wave - front aberration and focal spot size was researched roundly, and the essential connection between focal spot energy shape and wave front gradient distribution was discovered, and a smarter parameter to evaluate wave front aberration was founded. based on this, the wave front aberration tolerance confined by focal spot size requirement was obtained through calculation and statistics method. 2

    比較全面地分析了系統內部波前誤差與光束焦斑尺寸之間的關系，找到了波前梯度分佈與焦斑能量分佈之間的本質聯系，提出了一個與焦斑尺寸關系最密切的波前誤差參數，並採用數值模擬和統計的方法得到了焦斑尺寸限制條件所要求的波前誤差限制條件； 2
  8. Here we consider the choice of the parameter as the norm of the gratitude of the function. we prove under the local error bound condition that the levenberg - marquardt method with this parameter converges quadraticlly to a solution of the system of the equations. and we also present two globally convergent levenberg - marquardt algorithms using line search techniques and trust region approach respectively

    我們提出選取迭代參數為當前迭代點處函數梯度的模，在局部誤差界條件下， levenberg - marquardt方法依然具有二階收斂性，並考慮了線搜索和信賴域技巧的levenberg - marquardt方法，分析了其全局收斂性。
  9. To correct these effects, two methods were introduced in this paper : using weighted function to constrain second phase error caused by dispersion, and utilizing pga algorithm to reduce the phase perturbation due to the irregularities of the ionosphere

    本論文介紹了兩種校正方法：利用加權函數抑制色散效應引起的二次相位誤差，以及使用相位梯度自聚焦演算法較正由電離層的不規則性引起的信號相位起伏。
  10. Secondly, by incorporating the temporal difference prediction technique with the genetic algorithm, a novel hybrid genetic neural networks for controlling nonlinear chaotic system based on the scheme of small perturbations and the use of gradient descent learning method is presented ( known as hygann strategy )

    2 .研究了一種將暫態誤差預測技術、小擾動控制技術、梯度下降法和遺傳演算法（ ga ）融合起來控制非線性混沌系統的復合遺傳神經網路方法（簡稱hygann法） 。
  11. Phase gradient algorithm for phase error correction of uwbr system

    用相位梯度法校正超寬帶雷達系統的相位誤差
  12. Gradient error of bath

    槽的梯度誤差
  13. The gradient vector can be used to construct the initial errors

    這時可以對梯度向量本身進行分析，或者用這個梯度向量構造初始誤差場。
  14. The reason why ladder error exists in the height data, and an approach for reducing the ladder error are given

    通過分析靜態模擬測高試驗結果，指出了該高度表提供的高度數據存在較大階梯誤差的原因及解決途徑。
  15. Firstly, the principle of phase gradient autofocus and rank one phase estimate and its advanced are detailed. secondly, it proposes an algorithm of fast maximum contrast phase compensation after discussing its similar algorithm fast minimum entropy phase compensation

    討論了經典的相位梯度自聚焦演算法、秩一相位誤差演算法及其改進形式;在討論快速最小熵相位補償演算法的基礎上，提出了對比度最優相位調整演算法，實測數據處理表明了該演算法的有效性。
  16. In this paper, we consider mixed finit element methods for the initial - boundary value problems of two order hyperbolic equations and linear integro - differential equations of parabolic type, obtain the error estimates of the discrete schemes for this two kinds of problems. in chapter one, we consider the expanded mixed finite element methods for the followling 2nd order hyperbolic problems this method expands the standard mixed formulation in the sense that three variable are explixitly treated : the scalar unknwon, its gradient and its flux

    本文討論了二階雙曲方程和線性拋物型積分微分方程方程初邊值問題的混合有限元方法，得到了這兩類問題混合有限元離散格式的誤差估計。第一章討論二階雙曲初邊值問題的擴展混合元方法。該方法能同時逼近未知函數、未知函數的梯度和流體的流量，較好的模擬了帶有混合型邊界條件的二階雙曲問題。
  17. A reasonable criterion to control error of element was studied. base upon this criterion, an indicator to drive the mobile node of bce was presented. in order to improve the efficiency, an implementing scheme ( according to the distribution of strain energy density ) was suggested when to consider the fact that the high gradient usually appears only in a very local region, especially in the case of huge amount of computation

    3 .在誤差控制方面，提出了bezier移動節點單元法中節點移動的收斂判據，研究了節點移動的導向原理；在mathematica和fortran環境下實現了完整的計算編程；在處理高梯度問題的實際應用中，提出了高應變能密度區的局部化處理的求解方案。
  18. 4, it has shown, through the study on the temperature modeling of ertan reservoir, that the location of upstream boundary can not be placed on the section with a great temperature gradient in vertical, because the water temperature distribution at upstream boundary can control the temperature structure in reservoir

    4 .在二灘水庫水溫模擬研究的基礎上對入口邊界的設定作了初步的研究，認為入口邊界不適宜選擇垂向溫度梯度較大的斷面。這是因為入口水溫垂向分佈基本控制了庫區水溫的分層狀況，而且入口邊界的速度和溫度條件的不匹配會導致較大的誤差。
  19. Since phase gradient autofocusing ( pga ) often produces unsatisfactory results when operating upon scenes that are dominated by distributed targets, a modified weighting average phase errors estimation method is proposed

    針對相鄰強目標導致的相位梯度自聚焦演算法（ pga ）收斂速度下降，提出了一種加權平均相位誤差估計方法。
  20. The essence of back propagation networks is that make the change of weights become little by gradient descent method and finally attain the minimal error

    其實質是採用梯度下降法使權值的改變總是朝著誤差變小的方向改進，最終達到最小誤差。
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