無偏差的估計 的英文怎麼說

中文拼音 [wúpiānchādegūjì]
無偏差的估計 英文
unbiased estimate
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 偏 : Ⅰ形容詞1 （不正; 歪斜） inclined to one side; slanting; leaning 2 （只側重一面） partial; prejudi...
  • 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. Kalman filter is the best estimate under the linear and unprejudiced least mean square error rule

    卡爾曼濾波是線性無偏最小方差準則下的最優估計。
  2. We make the following assumption for when 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of least squares estimate have been discussed in many documents. considered 2 is nonnegative definite matrix, this thesis derives best linear unbiased estimate of parameter matrix b and estimable parameter function kbl under the meaning of matrix nonnegative definite and the property of maximum probability of blue is investigated. next, we discuss some necessary and sufficient conditions of the equality of the lse and blue, then we derive the estimation of the deviation bet - ween the least squares and the best linear unbias estimators of the mean matrix, meanwhile a relative efficiency of lse ofb is proposed and its bound is given

    當0時，眾多文獻討論了回歸系數陣的各種估計及lse的有效性，本文考慮了當0的情形，給出了回歸系數陣b及其可估參數函數kbl的在矩陣非負定意義下的最優估計（ blue ） ，研究了它的一個最大概率性質，並且討論了最小二乘估計成為最佳線性無偏估計的充分必要條件，在此基礎上給出了均值矩陣的最小二乘估計與blue的偏差估計，定義了lse相對于blue的一個相對效率，並給出了它的界。
  3. Robustness of minimum norm quadratic unbiased estimator of variance for the general linear model

    一般線性模型下方差最小范數二次無偏估計的穩健性
  4. Robustness of minimum norm quadratic unbiased estimator of variance under the general linear model

    一般線性模型下方差的最小范數二次無偏估計的穩健性
  5. Aiming at regression analysis of prediction variable with error, this paper discusses the estimation of regression of coefficient, and a method is given

    林業科學試驗的預測模型中往往帶有測量誤差，此時回歸系數的估計不具有無偏性。為解決這一問題，從合理安排試驗的角度，給出了一個有效的解決辦法。
  6. Third, the accuracy of parameter estimate methods for the 2 - parameters weibull distribution and four different estimate methods for failure time based on the life of fixed time measurement are discussed

    在無偏性和均方誤差最小的意義下，得出了上述估計方法的優劣，為定時截尾、定時測試試驗數據下的可靠性分析奠定了基礎。
  7. In the third section three different forms of heteroscedasticity are used in the random simulation and then park test, glejser test and goldfeld - quandt test are compared although the existence of heteroscedasticity does not destroy the unbiasedness of the ols estimators, the variances become larger

    異方差的存在雖然並不破壞普通最小二乘估計量的無偏性，但是估計量的方差變大了。由於估計量方差的變大，就使通常假設檢驗的值不可靠。
  8. This paper studies mainly the theories of the semi - parametric regression model : ( 1 ) under proper conditions, using random weighted way to the estimator of the error density f ( x ) of the semi - parametric regression model, this paper proved the strong and weak consistent and the asymptotic unbiased property of the weighted kernel estimation fn1 ( x ) of the f ( x )

    本文對半參數回歸模型：主要做了以下三個方面的理論研究： （ 1 ）將隨機加權法應用到半參數回歸模型的誤差密度f （ x ）的估計當中去，在適當的條件下，證明了誤差密度的加權核估計（ ? ） _ （ n1 ） （ x ）的強相合性、弱相合性及漸近無偏性。
  9. Abstract : the generalized shrunken prediction of finite population is introduced, using generalized shrunken least squares estimator of linear regression models. with respect to prediction mean squared error, a necessary and sufficient condition for superiority of a generalized shrunken prediction over the best linear unbiased prediction is obtained. in the case of linear combination of every unit index, a linear restricting prediction is introduced and then a necessary and sufficient condition for superiority of linear restricting prediction over the best linear unbiased prediction is devived

    文摘:利用線性回歸模型的廣義壓縮最小二乘估計，引入了有限總體的廣義壓縮型預測，在預測均方誤差意義下，得到了廣義壓縮型預測優于最佳線性無偏預測的一個充分必要條件；在只能得到每個個體指標的線性組合時，引入了一種線性約束型預測，並得到了線性約束型預測優于最佳線性無偏預測的一個充分必要條件
  10. 3 ) < wp = 12 > using perturbation analysis, the space - correlation loss and the bearing - estimated error for finite - bandwidth incoherently distributed sources are evaluated analytically, respectively. it is disclosed that bandwidth - induced bearing bias increases monotonously with the signal ' s relative bandwidth. when the relative bandwidth is not small enough to be negligible, the spatially - only processing cannot lead to accurate bearing estimate, that is, the joint space and time processing is necessary for high - precision bearing estimation

    3 ）利用擾動分析方法，解析評價了有限帶寬引起的非相干分佈源的空間損耗及其對波達方向估計的影響；分析表明，帶寬擾動引起的方向估計偏差隨信號相對帶寬單調增加；當相對帶寬無法忽略時，為了得到高精度的波達方向估計，需要進行聯合空時處理。
  11. Based on the coherent reception theory of radio signals and the theory of digital signal processing, the effects of carrier frequency offset, sampling clock offset, and symbol timing offset on ofdm signals are exploited. a series of amendments and new algorithms is derived from the in being algorithms of guard interval based symbol timing and frequency offset estimation, frequency - domain frequency offset, sampling offset, and symbol timing offset estimation

    以無線信號的相干接收和數字信號處理理論為基礎，就載波頻偏、采樣鐘偏差和符號定時偏差對ofdm信號的影響進行了分析，對基於保護間隔的符號定時與載波頻偏估計演算法和多種現有頻偏、采樣鐘與符號定時偏差的頻域估計演算法進行了研究，提出了一系列改進措施與新演算法。
  12. Therefore, each sum of squares of deviations is the times of the consisitent and unbiased estimate of variance. so, if the division is reasonable, the sum of squares of deviations attained through the data to be grouped and the one attained through history data should be very close

    這樣，由於每個類內離差平方和為該數據所屬分佈的方差的相合且無偏的估計的倍數，故如果分類合理，則由待分數據得到的離差平方和應與由歷史數據得到的離差平方和相接近。
  13. In this paper, we discussed the procedures of quantiles, maximum - likelihood, probability weighted moments, moments, least square, the best linear unbiased estimate, good linear unbiased estimation, and the best invariant estimate to the parameters of gumbel distribution, then give out the expectation and variance - covariance respectively. we compared the statistical behavior of these eight estimate procedures not only theoretically but also in the monte - carlo simulation

    本文利用分位數法、極大似然法、概率加權矩法、矩法、最小二乘法、最佳線性無偏估計法、簡單線性無偏估計法、最好線性同變估計法對gumbel分佈中的參數進行估計，分別給出了這八種估計量的期望、方差和協方差。
  14. This algorithm improves confidence in se by estimating parameters and states at the same time. simulation results on test power systems which range in size from 4 to 118 buses, have shown the virtues as follows : getting unbiased estimation without detecting and identifying bad data in measurements ; solving state and parameter estimation for power system with good convergence and excellent robust property ; increasing the numbers of iterations a little bit with the test systems expanded ; estimating many transformer taps simultaneously and remaining the main state estimation ; keeping the estimated relative error within + 0. 1 % and processing efficiently equality constraints and ill condition with polynomial complexity

    對ieee ? 4 118節點系統和廣西主網進行的模擬結果表明： l1范數估計具有不良數據拒絕特性，當量測量中存在不良數據時，該演算法在不經檢測和辨識不良數據情況下仍是無偏估計，具有良好收斂性，所需迭代次數隨著問題規模擴大而增長極小；能夠同時估計多個變壓器抽頭，並保持狀態估計主體；在滿足可觀測性條件下，估計的相對誤差保證在0 . 1以內；能夠有效處理等式約束和病態條件，並具有多項式時間性。
  15. Extension of the uniformly minimum variance unbiased estimation of a class of multivariate linear model

    一類多元線性模型的一致最小方差無偏估計的推廣
  16. Unbiased estimators are not necessarily consistent, but those whose variances shrink to zero as the sample size grows are consistent

    無偏估計量未必是一致的，但是那些當樣本容量增大時方差會收縮到零的無偏估計量是一致的。
  17. A verification technique, which obtains unbiased estimator for the means and variance of several global and local features is presented and a matching way after acquiring the threshold by probability density function is achieved

    摘要論述了在獲得在線手寫簽名的曲線的一些局部和全局特徵的平均值和方差的無偏估計的基礎上，通過概率密度函數進而獲取閾值進行匹配的鑒別方法。
  18. Solution method of matrix units of genetic variance and covariance in estimating cows ' genetic value

    協方差的最優二次型無偏估計
  19. If we are presented with an estimator that is both linear and unbiased, then we know that the variance of this estimator is at least as large as that from ols

    如果有人向我們提出一個線性無偏估計量，那我們就知道，此估計量的方差至少和ols估計量的方差一樣大。
  20. And the measured uncertainty in vickers hardness testing was evaluated according to procedure without bias method and procedure with bias method

    利用無偏差估計方法和考慮硬度計偏差的方法對維氏硬度試驗中的測量不確定度進行了評定。
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