有偏估計 的英文怎麼說

中文拼音 [yǒupiāngūjì]
有偏估計 英文
base estimate
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 偏 : Ⅰ形容詞1 （不正; 歪斜） inclined to one side; slanting; leaning 2 （只側重一面） partial; prejudi...
  • 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. 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。
  2. The estimation of additive and dominance effects through qtl analysis by one - dimensional search while ignoring epistases showed similar accuracy to that by two - dimensional search by including epistases. existence of epistases could decrease the precision for the estimation of additive and dominance effects. the estimation of genetic main effects would be biased if ignoring the interaction effects of qtl x environment ( qe )

    忽略上位性效應的一維搜索qtl分析對加性效應和顯性效應的估計精度與包括上位性的兩維搜索qtl分析對這兩種效應的估計精度相差不大，上位性的存在可能會降低對這兩種效應估計的精度；忽略qtl環境（ qe ）互作效應會導致對遺傳主效應的有偏估計，而包括qe互作效應的多環境聯合分析能夠提高對遺傳主效應的估計精度。
  3. Based on the least squares and biased estimation especially ridge estimation, a new estimation, that is, generalized ridge estimation is put forward through studies on restriction of the parameter. model ' s prediction being considered, comparison of superiority of optimal and classical predictions with respect to the ridge estimation is showed. regression diagnoses especially distance for principal components estimation is discussed

    論文基於最小二乘估計及有偏估計特別是嶺估計，對參數的約束條件做了進一步研究，並提出一種新型估計即廣義嶺型估計；對模型的點預測問題進行深入探索，得出一種基於嶺估計關于經典預測和最優預測的最優性判別條件；也對回歸診斷特別是基於主成分估計的距離進行了深入探討。
  4. The biased estimators of the parameters in the linear model with aggregated date

    聚集數據的線性模型參數的有偏估計
  5. The major characteristics of prr estimator lie in that it is a partial shrunken estimator. theory analysis and numerical simulation demonstrate that the two estimators can effectively improve the ls estimator

    通過理論分析和算例分析說明這兩個有偏估計是確能有效改進ls估計的新的有偏估計。
  6. In order to combat the influences of both outlier and ill - conditioning on geodetic adjustments, a new robust - biased estimation method is proposed by combining quasi - accurate detection ( quad ) of gross error and biased estimation

    針對粗差和病態性同時存在問題，把擬準檢定法的優點和有偏估計的優點結合在一起，提出了基於擬準檢定的抗差化有偏估計。
  7. Starting with the equivalence condition of admissibility, this paper discusses respectively the linear biased estimate of the regression coefficient of thee models : the g - m linear regression model, the multivariate linear regression and the mixed - effect coefficient linear model

    本文以可容許性的等價條件為起點，分別討論了g - m線性回歸模型、多元線性回歸模型和混合系數線性模型的回歸系數的一類線性有偏估計。
  8. A numerical example illustrates that the new robust - biased estimation method not only can resist the bad influence of outlier and effectively overcome the difficulty caused by ill - conditioning simultaneously, but also is far more accurate than ls estimation, biased estimation, robust estimation and generalized shrunken type - robust estimation

    通過數值實驗說明了基於擬準檢定的抗差化有偏估計確實是一種很好的估計，對消除粗差和病態性的不良影響非常有效。
  9. In order to get this, some useful explorations on how to analysis and solve the problem of the ill - conditioning have been made and several biased estimators have been put forward. in fact, analyzing the essence, overcoming the effect of ill - conditioning and obtaining more accurate and stable parameters estimator is an new task in gps surveying data processing, which have been determined as an important studying field in contemporary surveying error theory and engineering data processing by the international association of geodesy ( iag )

    事實上，分析測量平差系統病態性的實質、克服或減弱測量平差系統病態性的影響、採用有偏估計等方法提高參數估計和平差成果的精度，是當前gps等重大測量工程數據處理中所面臨的一個重要課題，它已被國際大地測量協會（ iag ）確立為現代測量誤差理論及數據處理研究中的一項重要內容。
  10. A new biased estimator so - called ridge type - generalized inverse ( rg1 ) estimator is constructed after summing - up the historical and present condition of biased estimation theory in surveying data processing. the prosperities of rg1 estimator are studied especially by pitman ' s criteria. the other biased estimator so - called partial root root ( prr ) estimator is generated

    通過對有偏估計理論在測量數據處理中的應用歷史和現狀進行總結和分析，構造了未知參數的一種新的有偏估計方法? ?嶺型廣義逆估計，對其性質特別是在pitman準則下的若干性質進行了討論；接下來構造了另一種新的有偏估計方法? ?部分根方估計，該估計的最大特點在於它是一種部分壓縮估計。
  11. Study the spectral de - aliasing method of image restoration in frequency domain, and offer the improvement with block processing and recursive rstoration to some problems. at the same time, the biased estimate theory is applied in the restoration processing. these improved steps increase the value in the use of data and decrease the time of computation

    2 、研究了基於頻率域的解頻譜混疊方法，針對該方法存在的問題，分別提出了分塊重建和循環重建，提高了重建的效率；並將有偏估計用於重建理論中，提高了影像數據的利用率。
  12. In order to reduce the deficiencies of ridge estimator, stein shrunken estimator and principal component estimator, two new biased estimators, so - called combining ridge and shrunken estimator, and, combining ridge and principal component estimator, are constructed respectively. their good properties in the mean squared error and the numerical value stability are investigated, the determination of biased parameter of the estimators are discussed, and some important conclusions are obtained, respectively. theory analysis and the computational results demonstrate that the two estimators potential estimator in surveying adjustment

    本文針對嶺估計、 stein均勻壓縮估計和主成分估計存在的缺陷，構造了兩種新的有偏估計：嶺?壓縮組合估計和嶺?主成分組合估計，討論了兩種新估計在均方誤差意義下和數值穩定性方面的優良性質，討論了有偏估計中偏參數的選取問題，通過理論分析和算例分析說明這是兩種很有潛力的有偏估計。
  13. The comparisons between the two most important biased estimators, ordinary ridge estimator and principal components estimator, and ls estimator are conducted by using the criterion of mean squared error ; and the conditions to show the superiority of each of these two estimators over the ls estimator have been obtained. then, the tests have been suggested to verify whether or not these conditions hold in given situations by using the statistical method

    在均方誤差準則下對目前應用最廣泛的兩種有偏估計? ?嶺估計和主成分估計與ls估計進行了比較研究，得到了嶺估計、主成分估計優于ls估計的條件；然後運用統計方法對這些條件的成立進行了檢驗，從假設檢驗的角度解決了有偏估計與ls估計之間的選擇問題。
  14. The unbiased predicted value or estimated value of gene main effects and gene treatment interaction can be used as precursor to clustering to make sure the inputs are statistically meaningful and of biological interest

    對基因主效應的無偏估計值和基因與處理互作效應的無偏預測值進行聚類可以獲得具有統計學和生物學意義的結果。
  15. 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。
  16. The proposed method can provide unbiased estimate of the ms ' s position. it is characterized by high efficiency and small memory volume requirement

    該方法對移動臺位置的估計是一種無偏估計，具有存儲量小、摘要定位效率高的特點。
  17. Abstract : based on signal processing theory about high - order cumulants ( hoc ), a fast, inexpensive and unbiased cumulants estimation approach is proposed for the detection of multifrequency signals between offices connected to telephone networks

    文摘:基於高階累積量的信號處理理論，提出了一種快速、簡便且無偏估計的方法對多頻信號進行有效的檢測。
  18. 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。
  19. In term of the prediction problem, the fourth chapter discusses its superiority of the optimal and classical predictors based on the ridge estimation, and gives an necessary and sufficient condition of comparison of its superiority under the condition of criterion by some properties of partial ordering of matrix

    藉助矩陣中l ? wner偏序的一些性質，獲得在此判別準則下判別兩類預測量最優性的充要條件。為研究基於有偏估計關于兩類預測量的最優性判別問題提供了一種方法和思路。
  20. The present paper gives some profound results of linear biased estimation of regression coefficients which include linear biased estimation for the minimum mean square error, the necessary and sufficient conditions for the linear biased estimation superior to least square estimation, the necessary and suffic ) ent conditions for the admissibility of linear biased estimation and some linear biased estimators not included in the literatures

    摘要給出回歸系數的最小均方誤差線性有偏估計、線性有偏估計優于最小二乘估計的充要條件及線性有偏估計為可容許估計的充要條件，同時給出文獻中未涉及的一些有偏估計。
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