次最優的 的英文怎麼說

中文拼音 [cìzuìyōude]
次最優的 英文
suboptimal
  • 次 : Ⅰ名詞1 （次序; 等第） order; sequence 2 [書面語] （出外遠行時停留的處所） stopping place on a jou...
  • 最 : 副詞（表示某種屬性超過所有同類的人或事物） most; best; worst; first; very; least; above all; -est
  • 的 : 4次方是 The fourth power of 2 is direction
  • 最優 : optimal; optimum最優策略 optimal policy; optimal strategy; 最優設計 optimum design; 最優值 optima...
  1. Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value

    同時，由於poisson分佈的特性，我們知道不存在其參數區間長度小於0 . 5的置信區間，基於這些情況，我們主要展開了以下兩個方面的研究：一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間， wald置信區間， bayes置信區間等進行分析比較，發現了一些缺陷，針對這些缺陷，我們進行適當的修正，並得到幾種性質較好的置信區間如：修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度，我們提出了一種漸近的兩階段區間估計程序，並利用數值計算的方法，在各種置信系數與區間長度限定下，算出了最優的第一階段觀測次數（抽樣量） ，大量數據表明，本文考慮的方法性態良好，具有應用價值。
  2. It makes decision on stability state of countryrock according to in - situ surveying datum, and grey prediction model is formed using the deformation curve of country rock. this model can predict latter displacement of country rock. deeper analysis is also been counducted on countermeasure and mechanism of softrock tunnel, and gradation analysis method is applied to select the optimum bracing plan

    再結合現場實測資料對地下洞室圍巖的穩定狀態進行判別，利用圍巖變形曲線建立灰色預測模型，採用該模型對圍巖位移的後期變形進行預測。對軟巖隧道的支護對策、支護作用機理進行了較深入的分析研究，並利用層次分析法選擇最優的支護方案。
  3. Crossover is implemented using arithmetic crossover operator. then unsymmetrical mutation is conducted using the new mutation operator which can expand the scope of chromosome gene value, at the same time, the chromosome with the highest fitness values are retained for each iteration. a lot of experiments are implemented to obtain the optimized initial weighs and bias

    生成了三維矩陣表示的染色體，進行了聯賽選擇，利用算術交叉運算元進行了交叉運算，利用構造的新的變異運算元，進行了非均勻變異，同時保留了每次進化運算后最優的適應值，通過大量實驗，實現了遺傳演算法優化bp網路的初始權值和閾值的目的。
  4. Kalman filter is an optimal filter algorithm in the minimum - mean - square - error sense, meanwhile extended kalman filter is a sub - optimal filter algorithm, which derived from the linearization of nonlinear system using taylor expansion. while the non - linearity of the system is not extreme strong, ekf can achieve approximately optimal filter effect

    Kf是最小均方意義下的最優濾波演算法， ekf則是利用一階泰勒展開將非線性系統線性化而得到的一種次優濾波演算法，在非線性不是特別嚴重的情況下， ekf有著近似最優的濾波效果。
  5. According to the optimization of wagon flow organizing, the author regards xiang - shi line and interrelated technical station as a logistic system, and proofs the optimal layout of this line, at the same time, applies the method cost, the avoiding vice optimizing, the means of comparison and analysis etc. combing area of xiang - shi line, the author analyses the present situation and main problem

    本文從車流組織優化入手，把襄石線及相關的技術站視為一個物流系統，從系統優化的角度論證襄石線最優的區段站設置方案，運用了系統管理觀念，包括總成本法、避免次優化、得失比較分析法等。
  6. We optimized to derive the merv input shaper and compare it to other input shapings. through the comparison, we can find out that the merv shaping yield the better performance than the others. we can also derive the hybrid input shapers if we simplify the optimal process

    並應用merv （最小余振平均值）輸入成型方法，以磁頭定位系統為模型，通過數值優化過程求解出最優的merv輸入成型器和次最優的混合輸入成型器。
  7. By means of determining the mature and quantities of distribution, assemblage and transfer layers in distribution system, the conclusion is made that in perfect situation, the optimal distributing construction depends on distance and density of requirement, and then, the method to define distribution framework and optimal hierarchy according to economic scale in practice is put forward

    通過對配送系統運作中的分貨、集運與運輸中轉分層的定性與定量分析，從而得出在理想的狀態下，運輸最優的配送結構主要取決于距離和需求點密度的結論，並給出了實際問題中結合經濟規模確定最優層次的方法。
  8. If genetic algorithms are employed, particularly, to optimize the fuzzy controller, it will contribute to the new ideal for the separation of artificial intelligence. the aim of this paper is to use a based - on ga fuzzy controller to control the centrifugal separation between slurries and water. the paper is made up three sections : in the first one, we introduce the principle of the technique of centrifugal separation, which specially and systemically is introduced because the mixture is separated in the decanter

    本文首先系統的介紹了離心沉降分離技術的原理，特別介紹了分離物料在臥螺離心機內的分離原理以及影響分離效果的內部和外部因素，為採用模糊控制代替傳統的分離控制奠定了理論基礎；其次，對模糊控制器的特點進行詳細的剖析，將其與黃河泥沙分離工程的特點進行融合，取長補短，找到它們的切合點，提出了基於ga的最優的模糊控制器的設計方法；然後採用遺傳演算法來優化模糊控制器的查詢表，縮短系統控制的調節時間。
  9. The experimental results indicates that the secondary mass flow increases with increasing of primary mass flow rate, but the bypass decrease because the primary mass flow rate increase more rapidly than secondary mass flow. the expansion configuration shows low thrust property due to low pressure in flow path. the secondary nozzle changes the pressure distribution in ejector combustor, and decreases bypass ratio, but obtain more completely mixing

    結果表明：二次流流量隨著一次流流量的增加而增加，由於二次流流量的增加速度低於一次流，引射系數減小；在純擴張式結構實驗中，引射燃燒室壓強很低，難以實驗推力增強；二次噴管改變了引射燃燒室的壓強分佈，降低了引射系數，改善了混合狀況能；對于本文的實驗結構，存在一個最優的二次噴管出口面積，使引射火箭推力最大，同數值模擬結果相吻合。
  10. The method of fuzzy modeling can be taken as a good candidate of this problem in this thesis, the inverted - pendulum system is firstly analyzed by using t - s fuzzy model due to its property of arbitrary approximation for the non - linearity. based on the parameters identification, simulations of system are made by using fuzzy logic toolbox of matlab. the results of comparison with lq approach show the performance improvement in the aspects of overshoot and fast response

    本文首先利用模糊模型的非線性逼近能力，採用t - s模糊模型對小車-倒擺控制系統分析並實現了該系統的模糊建模及模糊模型各部分參數的辯識，在matlab模擬環境下藉助其模糊邏輯工具箱進行了系統的模擬，與採用線性二次最優控制的系統模擬結果進行比較，改善了系統超調量及快速響應性。
  11. For the first problem, the successive best selection method is presented based the idea of the greedy method. it is the synthesis of fission and assemble methods. some numerical comparison about them is also given

    在分組的尋優上，我們借鑒了貪婪演算法的思想，提出了逐次最優選擇演算法，它是分裂與合併演算法的綜合，大量的數值計算表明該演算法與現有的幾種方法相比更有效。
  12. But this result is not the best result relative to bayes error or risk. this paper introduces a face recognition method based on pairwise weighted fisher criteria

    但是這個「盡可能好的』 』分類結果對於它所對應的準則函數來說是最優的，但是相對于錯誤率或風險而言，它只是次優的。
  13. Secondly, the dissertation proposes a novel blind symbol - timing scheme for ofdm systems based on cyclostationarity feature of received symbols. the proposed schemes also exploits the periodicity of ofdm symbol introduced by cyclic prefix, by applying 2 - dimentional fourier transformation and choosing the appropriate correlation peak value as the symbol start location, the precision of this scheme is higher than previous conventional method. thirdly, the dissertation presents analysis with regard to channel estimation of ofdm systems. several interpolation algorithm in ofdm systems which based on pilot sequence have been analyzed in the first instance, and the influence of the channel noise on interpolation precision has discussed. the theoretic analysis and simulation results show that : the interpolation error induced by the precision of interpolation procedure itself has out weight

    第三，論文在ofdm系統的通道估計方面，先對基於導頻的ofdm通道估計中的多種插值方法進行了分析，討論了噪聲對插值精度的影響，指出插值本身的精度所造成的插值誤差遠大於噪聲所帶來的插值誤差，從而階次更高的插值演算法在實用中並非最優的;並指出插值濾波法比變采樣率演算法對噪聲的影響更為敏感，在信噪比較高時插值濾波演算法比變采樣率演算法更優。
  14. Abstract : based on systematic analysis, selecting and then quantifies the qualitative indexes in the way seat - ed in literature, the multi - stage decision model is established here to seek the optimal strategy by dp andahp method to make the optimal decision

    文摘:通過對本問題的系統分析，選擇和確定定性指標，然後將定性指標定量化，根據文獻構造了多階段決策模型，提出了應用動態規劃（ dp ）方法和層次分析法（ ahp ）解決這一多階段的決策問題，以確定最優的策略
  15. I can assure you the quality of the goods, and for the price can be discussed ulteriorly

    產品的質量我們可以保證，至於價格我們可以繼續商量。第一次交易，我們肯定會給你一個最優的價格。
  16. The results indicate that with decrease of exit area of secondary nozzle, the bypass ratio is decreasing, and the static pressure in integrated ejector combustor is increasing, and mixing condition becomes better. there exists an optimal exit area of secondary nozzle to get maximum thrust of rocket ejector

    結果表明：引射能力隨著二次噴管出口面積的減小而減小；整體式引射燃燒室壓強隨著二次噴管出口面積的減小而上升，混合隨之更為充分；存在一個最優的二次噴管出口面積，使發動機推力最大。
  17. Entropy is applied to find the proper wavelet scale parameter, with which the analysis results are more precise than with other parameters

    本文首次把「信息熵」引如電壓暫降的檢測工作中，用於尋找最優的小波尺度，使檢測結果更加準確。
  18. This paper also suggests an effective method of preventing premature of genetic algorithm is presented based on the analysis of causes of premature of genetic algorithms. some different local optima are found firstly and the best of these solutions is regarded as the last result. 0 - 1 integer linearity programming is an important integer programming model

    另外ga在應用中還存在早熟收斂的問題，本文介紹了解決該問題的一種策略，對一個優化問題連續多次運行ga以求得多個不同的局部最優解，再從這多個局部最優解中挑選一個最優的作為演算法的最後結果，該方法可大大提高了ga求得真正全局最優解的可能性。
  19. And the experience of cutting sulphur emissions in america in the 1990s argues that second - best solutions can give way to the best : regulations on power stations were eventually superseded by a successful cap - and - trade scheme that cleared the stuff out of america ' s air

    根據90年代美國減少硫排放的經驗，美國人說有一個次最優的辦法可以用來代替碳價，那就是一些列成功的限制貿易體制最終取代對發電廠的管制，美國空氣中的那些臟東西就是這樣消失的。
  20. The main works of the dissertation can be summarized as follows : 1. by exploring the model of ds - cdma systems, the performances of the decorrelating multi - user detector and minimum mean square error ( mmse ) multi - user detector are studied. further, the performances of blind adaptive mud and adaptive mmse mud ( lms style ) with fixed step size and varied step size respectively are studied based on mmse linear detect algorithms

    本文主要研究次最優的線性多用戶檢測技術，工作具體如下：從ds - cdma系統模型出發，研究了解相關多用戶檢測器和mmse多用戶檢測器的性能，並以mmse線性檢測技術為基礎，研究了變步長和固定步長的lms - mmse自適應多用戶檢測器和基於最小輸出能量準則的盲自適應多用戶檢測器。
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