最差的估計 的英文怎麼說

中文拼音 [zuìchādegūjì]
最差的估計 英文
at worse
  • 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
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 的 : 4次方是 The fourth power of 2 is direction
  • 估 : 估構詞成分。
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 估計 : estimate; evaluate; take stock of; size up; calculate; appraise; reckon; estimation; forecast
  1. Investors produce biases systematically in their decision making. debont and thaler believe that overconfidence is one of human being ’ s most stable psychological characteristics and their evidences show that people are overconfident of the probabilities of occurrences of uncertain events in their decision making

    投資者系統性決策偏差比較多， debont和thaler認為過度自信是人類最為穩定的心理特性，他們列舉了度量的證據顯示人們在做決策時，對不確定性事件發生的概率的估計過于自信。
  2. During the instantaneous frequency estimation of lfm, there exists some error in the edge, so in the dissertation, a fitting method is proposed to modify it. from the computer simulation, the following result is obtained : for cw, the method based on cwt is most effective, and with the snr rising, the error curve of it is more and more closer to crb. for lfm, the method based on wvd gives the best result, and the effects of cwt and stft are similar for multi - component signal, compared to stft and wvd, cwt is a better choice

    通過模擬發現，在單頻回波的瞬時頻率估計中，基於cwt的方法最為有效，隨著信噪比的提高，其均方誤差曲線越來越接近克拉美?羅界；在線性調頻回波的瞬時頻率估計中， wvd法得到的效果最好，而cwt與stft法的估計效果比較接近；在多分量信號的瞬時頻率估計中，相對于stft和wvd法， cwt法是一個更好的選擇。
  3. Secondly, it was. made theoretical analyses about the optimal training sequence design by the maximum likelihood estimation method and obtained the corresponding results, which were compared with the separate results derived by the minimum mean square error ( mmse ) estimation method in the other literature. at last, it was analyzed the impac

    其次進行了採用最大似然（ ml ）估計法的最佳訓練序列設計的理論分析，分別得到了有關結果，並和其他文獻中採用最小均方誤差（ mmse ）估計法的設計結果進行了分析比較，得到了有關結論。
  4. For a general linear model ( input matrix is deterministic ), under a certain conditions on variance matrix invertibility, the two estimates can be identical provided that they have the same priori information on the parameter under estimation. even if the above information is unknown only for the optimally weighted ls estimate, the sufficient condition and necessary condition, under which the two estimates are identical, is derived. more significantly, we know how to design input of the linear system to make the performance of the optimally weighted ls estimation identical to that of the linear minimum variance estimation in case of being lack of prior information

    在一般線性模型（即輸入矩陣為確定性）下，當兩種估計都利用有關被估參數的先驗信息時，二者在方差陣可逆的一定條件下可達到一致；當最優加權最小二乘估計不利用此先驗信息時，存在二者一致的充分條件和必要條件，進而找到一種設計輸入矩陣的方法，使得在先驗信息缺乏的條件下，仍可利用最優加權最小二乘估計達到與線性最小方差估計一樣優越的估計性能。
  5. After establishing induction motor simulation model with iron loss, this paper has investigated effect of iron loss and proposed two schemes to compensate estimated error due to iron : one modified the structure of controller, the other modified the structure of observer, both schemes eliminated the detuning effect of iron

    對于鐵耗的影響，本文建立了考慮鐵耗的感應電機模擬模型后，研究了鐵耗造成的估計誤差，並利用兩種方法對誤差進行補償，一種是修改控制器結構的方法，另一種是修改觀測器結構的方法，最終都較好地消除鐵耗對速度估計的影響。
  6. This method utilize one of the three linear arrays to pair the 1 - d doa which is estimated by the other two liner arrays respectively

    該方法利用其中的一個直線陣來組合兩個線陣分別估計的一維doa ，最大誤差不超過0 . 6 ，改善了doa的估計性能。
  7. Unlike the normal two stages estimate method ( the usual nonparametric weighted method combined with the least square estimate ), considering the characteristics of this model, this paper uses the least square estimate combining with the usual nonparametric weighted method and defines the estimators and n2 for the unknown parameter, the unkown fuction g ( ) and the unknown variance of errors 2

    與通常採用的兩階段估計方法即非參數權函數法結合最小二乘法不同，考慮到此模型本身的特性，本文採用最小二乘法結合一般非參數權函數估計方法，定義了未知待估參數和未知函數g （ ? ）及誤差方差~ 2的估計量（ ? ） _ n ， （ ? ） _ n （ ? ）和（
  8. Using maximal diffusive flux to substitute actual diffusive flux, which will overestimate diffusion losing and bring biggish error for estimate of gas source rocks and resource evaluation of gas pool. 5

    以往用最大擴散氣量來代替實際擴散氣量的演算法會過高的估計天然氣的擴散損失量，給氣源巖評價和氣藏的資源評價帶來較大的誤差。
  9. The problem of doa ' s estimation of multiple source signals incident on a arbitrary array in the presence of both unknown spatially correlated noise and sensor errors is firstly considered. a modified ml estimation of doa ' s and sensor gain errors is presented. unlike previous work, the proposed method does not impose any structure constraints or parameterization of the signal and noise covariances. the algorithm can be carried out via the alternating projection approach. finally, the performance of the proposed method is shown with computer simulations as well as real array data

    在空間相關色噪聲環境及存在陣列模型誤差情況下，首先給出了基於最大似然的doa及陣列幅相誤差聯合估計演算法，該演算法對信號和噪聲無任何約束，且適用於任意陣列結構。演算法可以利用交替投影迭代搜索實現，計算機模擬實驗和外場實測數據表明，本章演算法能給出比傳統的最大似然方法更高的估計性能。
  10. If it is estimated by the method of ols, it will bring about serious effect : the variances of the parameter estimators are not the least, and the accuracy of estimation and prediction decreases

    如果對異方差模型進行ols估計，就會產生嚴重的後果：參數估計量的方差不具有最小方差性；估計與預測的精度降低。
  11. Max - norm estimates of characteristics difference methods for two - phase flow in porous media

    二維可壓縮可混溶流體驅動問題特徵差分法的最大模估計
  12. 3. based on the characteristic of the sensor distribution inside a platform, a sensor registration model for single - platform alignment is given. with the taylor series, we can get the first - order approximation of the registration model

    根據平臺內傳感器空間布局特點給出平臺級傳感器的配準模型，並對配準模型進行一階近似，最後通過kalman濾波演算法求出系統偏差的估計。
  13. The results show that the minus value and fluctuation of unit hydrograph can be mitigated and the error of observed discharge can be withstood using the robustified ridge estimation

    最後採用抗差嶺估計來推算單位線，該方法既可以解決共線性的問題，也可以抗禦粗差的影響，得到比較穩定的單位線。
  14. In special ly, the est imat ion of power spectra1 densi ty ( psd ) can be get in burg method which estimate reflection coefficient firstly, then get the ar parameter est imat ion usi ng the levinson recursion

    用遞推方法對不同階的預測是通過使預測誤差功率的估計值達到極小，從而得到反射系數估計值的，最終得到功率譜估計值。
  15. For a given matrix 0, when the real dispersion matrix varying within certain range, the glse ( the equation is abbreviated ) is the minimum risk estimator under a large class of loss functions, which implies the glse is a robust estimator with respect to dispersion matrix and loss functions

    證明當協方差陣在一定范圍內變動時，廣義最小二乘估計在一大類損失函數下都是風險最小的估計；廣義最小二乘估計關于協方差陣和損失函數同時具有穩健性。
  16. The iterative decoding of ldpc code must use the noise variance, so the variance estimation is important for the ldpc code decoding. by the computer simulation, we find that the impact of the estimation algorithm for the ldpc code performance is less than 0. 2db

    通過計算機驗證得到，利用這種演算法估計出的誤差對碼字的性能不會有大的影響，在最差的情況下對spa譯碼演算法和改進的wbf演算法的影響都不會超過0 . 2db 。
  17. In this paper we mainly discuss the problem about minimum variance estimation for linear model and bring out the relevance and difference of performance between the two methods in order to provide theoretic foundation for choosing appropriate estimation method

    本文針對這種線性（觀測）模型下的最小方差估計問題進行了深入討論，指出這兩種估計性能之間的關系及差別，從而為選擇恰當的估計方法提供理論依據。
  18. The minimum norm estimation of covariance matrix in the extended growth curve model with covariant variables

    有協變量的推廣增長曲線模型中協差陣的最小模估計
  19. Broadband source location method is investigated by using signal - phase - matching principle, and simulations and experiments are carried out to show the validity of the method ; two high resolution algorithms of broadband signals are proposed, which are the dft interpolation algorithm and the frequency invariant beam space algorithm. the proposed algorithms have no requirement for prior information of source locations, so the results of doa estimation can be unbiased ; a method of temporal - spatial averaging, which can improve the performance of doa estimation for uniform linear arrays, is given. this method can be applied in the most narrowband or broadband eigen - structure based high resolution algorithms

    提出了利用信號相位匹配法的寬帶信號方位估計方法並從模擬和實驗兩方面對其進行了驗證；提出了基於dft插值的和基於頻率不變響應波束域的兩種寬帶信號高分辨方位估計演算法，這兩種方法在進行方位估計時均不需要進行方位預估，從而避免了因角度預估可能帶來的估計偏差；最後提出了一種提高均勻線列陣方位估計性能的時空平均法，該方法可適用於多數窄帶或寬帶的特徵結構類高分辨方位估計演算法中。
  20. The influences of the signal - to - noise ratio and the integration limit on reverberation times evaluation are weakened, and a minimum statistical standard deviation and 95 % probability confidence interval are obtained

    同時，對比現有其他方法在統計上有最小的估值標準差，其均值的95 %概率置信區間也最小，有效地提高了混響時間的估值精度。
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