speed of convergence 中文意思是什麼

speed of convergence 解釋
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  • speed : n 1 快，迅速。2 速率，速度。3 （汽車的）變速器，排擋。4 （膠片，照相紙）感光速度。5 〈古語〉興隆...
  • of : OF ＝Old French 古法語。
  • convergence : n. 1. 聚合，會聚，輻輳，匯合。2. 集合點；【數、物】收斂；【生物學】趨同（現象）。
  1. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  2. On the speed of convergence and divergence of positive progressions

    對正項級數斂散快慢的討論
  3. Because ga possesses the traits of can global random search, the robustness is strong, been use briefly and broadly, it didn ’ t use path search, and use probability search, didn ’ t care inherence rule of problem itself, can search the global optimum points effectively and rapidly in great vector space of complicated, many peak values, cannot differentiable. so it can offset the shortages of nn study algorithm, can reduce the possibility that the minimum value get into local greatly, the speed of convergence can improve, interpolation time shorten greatly, the quantity of training reduce

    因為遺傳演算法具有全局隨機搜索能力，魯棒性強、使用簡單和廣泛的特點，它不採用路徑搜索，而採用概率搜索，不用關心問題本身的內在規律，能夠在復雜的、多峰值的、不可微的大矢量空間中迅速有效地尋找到全局最優解，所以可以彌補神經網路學習演算法的不足，使陷入局部最小值的可能性大大減少，使得收斂速度提高，訓練量減小。
  4. Abstract : the design problem of reduced - order state observer for a class of multi - input multi - output ( mimo ) nonlinear time - varying systems is studied in this paper. a new design method of nonlinear reduced - order state observer is proposed, and the exponential convergence is proved for the proposed state observer. the observer has the characteristics of that the speed of convergence is adjustable. finally, an example is given to show that this approach is effective

    文摘:研究一類多輸入多輸出（ mimo ）非線性時變系統的降維狀態觀測器設計問題.提出一種非線性降維狀態觀測器設計方案，並從理論上證明了狀態觀測誤差的指數收斂性.其中設計的降維狀態觀測器具有收斂速度可調的特性.最後給出了數值算例，模擬結果表明了本文方法的有效性
  5. 3 a novel recursive least - square ( rls ) blind space - time receiver algorithm based on the constrained condition, which can completely avoid the matrix inversion introduced into by constraints ( comparing with the normal rls ), is proposed for multi - path slow fading cdma channels. the computational complexity of this method is not only lower than that of the normal rls, but also lower than that of both lms and ls blind space - time receiver methods that are realized based on the rosen ' s gradient projection. and the speed of convergence of the presented rls blind space - time receiver algorithm is better than that of both lms and ls blind space - time receiver methods

    3 、針對多徑慢衰落通道下ds - cdma盲空時接收機中線性約束二次規劃問題提出一種新的遞歸最小二乘演算法，該演算法完全避免因約束而引進的矩陣求逆運算（相對于常規的遞歸最小二乘演算法） ，不但運算量比常規的要低，而且比基於rosen梯度投影實現的最小均方（ lms ）與最小二乘盲空時接收機演算法還低，且收斂速度比基於rosen梯度投影實現的最小均方（ lms ）與最小二乘盲空時多用戶檢測都好，將提出的新的遞歸最小二乘演算法與提出的數據選擇方案結合起來可以進一步降低其運算量，具有很大的實用價值，最後通過模擬實驗進一步分析了其性能。
  6. Through chaos optimization method embedded into the genetic algorithm. the algorithm with the combination the advantages of the genetic algorithm and chaos optimization method which need not the optimal problem function ' s differential and promote the ability of the genetic algorithm ' s locally meticulous search can be obtained with the faster convergence and the greater probability for the global solution. a chaotic sequence is inserted into the search procedure of genetic algorithm, which can overcome premature of the search by genetic algorithm and the speed of convergence is faster than standard genetic algorithm

    對遺傳演算法進行了理論分析，並且研究了遺傳演算法的設計與實現；利用混沌優化方法不依賴于梯度信息的性質，將其與遺傳演算法相結合，提出了一種求解連續不可微函數優化問題的混合遺傳演算法；基於對于符號動力系統的研究，利用混沌序列的遍歷性，將混沌序列引入遺傳演算法中，提出一種嵌入哈爾濱工程大學博土學位論文一混飩序列的遺傳演算法，該演算法有效地克服了標準遺傳演算法中的早熟現象，並且具有更快的收斂速度。 」
  7. On this ground, the issue of convergence or divergence, the speed of convergence and the cause of convergence, were became the hot topics of western regional economics study

    圍繞著趨同存在與否、趨同速度的快慢以及引致趨同的原因等問題，經濟增長趨同便成為西方區域經濟學界研究的熱點。
  8. Cellular automata was applied to solve mechanical problem of plane truss, and the feasibility of which was discussed in this article. the characteristic of cell and the way of dividing cell were studied while presenting a program and its frame chart. the work load of the new method was not much because it neednt form a partial differential set or a general finite element robustness matrix. numerical computing results show that the new method has a rapid speed of convergence to nodal displacement and internal force of element, so it probably has a good prospect in solving solid mechanical problems

    嘗試用細胞自動機作平面桁架力學分析，探討了該方法的可行性.給出元胞的劃分方法和特性，列出計算框圖並編制了相應的程序，由於不必形成結構的偏微方程集或有限元的總體剛度矩陣，計算工作量小.算例表明，該方法對結點位移和桿內力的收斂速度均較快，是一種分析固體力學問題有前景的新方法
  9. Aim at the neural network get local optimum easily, the speed of convergence is slow, the quantity of training excessive and so on. this paper adopted the ga optimize the nn firstly, and then the nn algorithm

    針對神經網路易出現局部最優點、收斂速度慢和訓練量過大等問題，本文先利用遺傳演算法對神經網路進行優化后，再執行神經網路的演算法步驟。
  10. This literature suggests a non - linear muskingum model which can exactly reflect the above mentioned effect and offers an effective approach : mixed generating arithmetic ( abbreviated as mga ) which is capable of estimating the parameters k 、 x 、 m in a non - linear muskingum approach with considerable accuracy and high speed of convergence

    本文提出正確反映這種作用的非線性馬斯京根模型成為必要，並提出一種十分有效的方法混合遺傳演算法（以下簡稱mga ） ，能很好地估計非線性馬斯京根模型中的參數k ， x ， m之值，而且計算精度高，收斂速度快。
  11. The numerical computing results show that the new method has not only rapid speed of convergence to nodal displacement, stress and strain of elements, but also good prospects on solving problems in solid mechanics

    本文提出的方法是在計算思想和方法上區別于有限元法、理論解析法的一種全新方法，具有較好的應用前景。
  12. The paper also constructs the model of the control of voltage and reactive power in substation by fnn. meanwhile, the paper discusses the calculating method using bp calculating arithmetic, and adopts the changing step method, adding momentum item method and changing slope method to quicken the speed of convergence in the calculating process

    本文利用模糊神經網路構造變電站的電壓無功控制的模型，並對基於bp演算法的變電站電壓無功模糊神經網路的計算方法進行了論述，並採用了變步長、加動量項、變斜率等改進的bp演算法，加快了訓練的收斂速度。
  13. When the dimension increases, the speed of convergence slows and the estimator is not steady

    由於維數的增加使得收斂速度相當慢，且估計極不穩定。
  14. In contrast to information entropy, the algorithm method of antibody density based on vector distance is simple and the speed of convergence is fast

    摘要基於矢量矩的抗體濃度計算方法，其演算法較基於信息熵的簡單、收斂速度快。
  15. Newton ' s method is the heart of classic iteration. although it is powerful and has fast speed of convergence, its shortcoming is obvious in some realms

    Newton法是經典迭代法的核心，雖然它是個強有力的方法並且收斂很快，但在某些情況下它的缺點也是很明顯的。
  16. But in engineering practice, premature convergence often happens, and sometimes the speed of convergence is very slow, which greatly restrict the application of genetic algorithm

    但是在實際工程應用中經常發生早熟收斂現象，且有時收斂速度非常慢，這在很大程度上限制了遺傳演算法的進一步普及應用。
  17. In order to expedite the speed of convergence, reserving the best individual do not take part in the next generation, thus increasing the speed of convergence and enhancing the efficiency to cut down the running time

    為了加快收斂速度，本文採取加入保留上一代最優個體不參與下一代的遺傳操作，這樣加快了收斂速度，提高了效率，減少機時。
  18. The synthetic tests show that the new sata algorithm is superior to the conventional linear geophysical inverse methods without depending on the initial model, and superior to the conventional non - linear geophysical inversion methods with higher speed of convergence

    用理論測試函數對這種新的反演方法進行了數值試驗，結果表明該方法具有解不依賴于初始模型、收斂速度快等優點。
  19. Besides, it is not fit with the precise adjustment and is difficult to conform the place. a new adaptive genetic algorithm with bp algorithm to optimize weight is backed up. the algorithm which combines the merits of the global convergence of genetic algorithm with fast local researching of bp algorithm not only intensifies the gradual convergence and evolution ability but also advance the speed of convergence, precision of training and generalization

    針對傳統遺傳演算法的搜索過程帶有一定的盲目性，其收斂特性不穩定且收斂速度緩慢，特別是在系統規模較大時，優化效果的明顯改善往往需要相當長的時間，而且不適合候選解的精調，難以確定解的確切位置，提出一種新型自適應性遺傳演算法，並在此基礎上，用bp演算法優化前向神經網路權值，綜合了兩種演算法的優點，即遺傳演算法的全局收斂性和bp演算法局部搜索的快速性，強化了遺傳演算法的漸進收斂和進化能力，全面改善了演算法的收斂性，提高了收斂速度及訓練精度，也擴展了泛化能力。
  20. In case of high input dimension system model, taking norm of input vector as the input of wavelet network instead of using tensor product method to construct wavelet network, which could solve the problems of high computation and curse of dimensionality. in the selecting of specific wavelet basis, this thesis first gets initial wavelet basis collection according to spectrum analysis, then gives the least squares regression algorithm to optimize wavelet basis collection based on the least estimation error criteria, which could also initialize the model parameters and increase the speed of convergence

    對于具體的模型小波基函數選擇，本文首先對樣本數據進行時頻域分析，根據小波基函數時頻空間覆蓋樣本時頻空間的原則，在小波框架中選擇建模所用的函數集，然後根據估計誤差最小準則，給出最小二乘回歸優選演算法以進一步優化小波基函數集。
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