squared error 中文意思是什麼
squared error
解釋
平方誤差-
As a result, in the paper, considering the altitudinal effect ( topography factor ) and the influence on the temperature lapse rate by topography and latitude and longitude and moisture transfer, the study on the daily surface air mean, max and min temperature in the reaches of yangtze rive is attempted by five models, which include the gaussian weighted model, the gaussian weighted model associated with the error - modification, the gradient plus inverse distance squared model and the modified gaussian weighted model a and b that take topography - factor into account
本文考慮海拔高度和溫度直減率受地形和經、緯度及水汽等因素的影響，通過利用高斯權重法、結合逐步訂正的高斯權重法、梯度距離權重反比法和加入地形影響項（地形因子）的兩種改進高斯權重法的方案a 、 b ，對長江流域的地面日平均、最高和最低氣溫場進行了空間化插值研究。 -
Ss residual error is the summation of the squared deviations of the observed response values from their fitted values
Ss回歸式是從響應變量的平均值到響應變量的各擬合值的方差的總和。 -
During the course of the research, the criterions of the interpolation effect are mean error ( me ), mean absolute error ( mae ), root mean squared interpolation error ( rmse ) and the difference of mean square deviation between the measured and the estimated surface air temperature. the conclusions are as follows : ( 1 ) by contrasting the gaussian weighted model associated with the error modification with the gaussian weighted model, the error modification is proved to considerably ameliorate the precision of spatial interpolation ; ( 2 ) on the base of the gaussian weighted model, taking altitudinal effect into account can reflect the trend in which temperature changes according to the topographic altitude and may ameliorate the precision of spatial interpolation correspondingly and apparently, which indicates that topographical effect on the preciseness of spatial interpolation can not be disregarded in terms of the region with complicated topography ; ( 3 ) the map of daily surface air temperature distribution, using the modified gaussian weighted model a and b, can accurately reflect the temperature - changing - with - topographical - altitude trend. among them, the better is the model a, whose me is below 0. 03 ?
在此過程中，採用平均誤差（ me ） ，平均絕對誤差（ mae ） ，插值平均誤差平方的平方根（ rootmeansquaredinterpolationerror ，簡稱rmsie ） ，插值前後測站要素值的均方差（ meansquaredeviation ，簡稱msd ）差值作為判定插值效果的標準，得出如下結論：通過高斯權重法與結合逐步訂正的高斯權重法的對比，說明結合逐步訂正方案的高斯權重法可大大提高地面日氣溫的插值精度；在高斯權重法中加入海拔影響項可以反映出溫度隨地形高度的變化趨勢，同時也能較大地提高地面日氣溫的空間插值精度，說明在地形復雜的區域，地形影響在插值精度中是不可忽略的；對于高斯權重法的兩種改進方案得到的地面日氣溫分布圖都能很好地反映出表面大氣氣溫隨地形高度的變化趨勢。 -
Finally, most supervised learning neural networks train themselves through minimizing mean squared error. but when the neural network models trained in this way are used to do forecasting, the existence of outliers result in great imprecision
最後，大多數監督學習神經網路是通過最小化訓練集的均方差來訓練網路，而野值的存在導致這種訓練的神經網路模型在預測時會產生極大的不精確性。 -
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 -
The simulation results demonstrate that the algorithm proposed in this paper has better performance with lower mean squared error ( mse ) and higner output signal to interference plus noise ratio ( senr )
文中的實驗結果表明本文提出的方法具有較小的輸出誤差和較強的抑制多址干擾的能力。 -
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。 -
Then we focus on decision feedback equalization ( dfe ) algorithm which is widely used in mimo signal detection. subsequently, a minimum mean squared error ( mmse ) detector based on wl detection combined with the decision feedback strategy for ca - mimo is derived. meanwhile, the issue that how to use wl detection in da - mimo system is discussed and a solved project is also presented
本文第四章在介紹了寬線性檢測技術的基礎知識之後，著重針對mimo信號檢測演算法中使用廣泛的反饋判決檢測演算法，提出了一種基於最小均方誤差準則的寬線性反饋判決集中式mimo信號檢測演算法;同時，結合第三章的內容，對分佈mimo信號如何採用寬線性檢測提出了一套解決方案，通過計算機模擬，給出了幾種分佈mimo檢測演算法的性能;結果表明，在採用最優檢測順序的情況下，兩 -
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。 -
The accurate float ambiguity solutions and their msem ( mean squared error matrix ) are obtained using several - epoch single frequency phase data. combining with lambda method, the new approaches can fix the integer ambiguities correctly and quickly using msem instead of the covariance matrix of the ambiguities
新方法只需要解算幾個歷元的單頻gps相位數據，可以得到比較準確的模糊度浮動解及其相應的均方誤差矩陣，用均方誤差矩陣代替協方差陣，結合lambda方法，可準確快速地解算模糊度。 -
The popular fidelity measurement method based on root mean squared error ( rmse ) is unable to completely reflect the details of the sensitive information of compressed grayscale images
摘要常用的基於均方根誤差（ rmse ）圖像保真度準則不能準確地放映一些灰度圖像主要敏感細節。 -
Minimum mean squared error
最小均方差 -
In this paper, a statistic variable, squared prediction error ( spe ), is defined to detect fault and calculating formula of confident limit for spe is given
本文定義了一個統計量? ?平方預測誤差spe ? ?來檢測故障，並給出了其控制限的計算公式。 -
An optimal subband rate allocation algorithm in mean - squared error ( mse ) minimization sense was proposed, which achieves persistent optimal rate - distortion performance under any given rate constrains
提出均方誤差最小意義上的最佳三維子帶碼率分配演算法，該演算法在任意給定碼率限制條件下都能獲得最優率失真性能。 -
Chapter three provides synchronization algorithms in dvb - t cofdm receiver, including symbol timing recovery, carrier frequency error estimation and sampling timing recovery. chapter four introduces some channel estimation algorithms based on interpolation in dvb - t receiver. five estimators are compared, in terms of mean - squared error both in rayleigh channel and ricean channel
第三章首先討論了由於載波頻率偏差、符號定時偏差和采樣定時偏差對ofdm系統所造成的影響和干擾，然後針對dvb - t系統的cofdm接收機方案，分別給出了符號定時同步、頻率同步以及采樣鐘同步的實現演算法，並對它們的性能進行了分析模擬。 -
Based on the obtained lower bounds on mean squared channel estimation errors, the limits on bit error rate ( ber ) for maximal ratio combining ( mrc ) with gaussian distributed weighting errors on independent and identically distributed ( i. i. d ) fading channels are presented
通過對不同衰落通道多普勒譜的積分，求出了相應的通道估計均方誤差下界的閉合表達式，並在此基礎上得到了分集系統在獨立同分佈的衰落通道中採用最大比合併時的誤碼率下界。 -
Admissible estimation of parameter in restricted space under squared - error loss
限制空間中的參數在平方損失下的容許估計 -
First, the mean - squared - error ( mse ) of the estimated position and the expectation of the error in estimated coordinate are calculated, based on which the performance of
這兩種方法在接收信號數大於天線陣元數時均能有效估計期望用戶的定位參數。 -
From simulation results, we get the following main conclusions : 1 ) the convergence performance can be improved with the ist - tap initialization strategy for the underwater acoustic channel established in this paper. 2 ) both the convergence rate and the steady - state value of the average squared error should be taken into account when choosing the step - size
得到的主要結論為：對于本文所建立的水聲多徑通道，盲均衡演算法採用第一個抽頭初始化方案其收斂性能較好；選取迭代步長時要兼顧收斂速度和穩態誤差；在保證收斂性能的基礎上，可選擇階數較小的均衡器。 -
Squared prediction error ( spe ) of model is detected continuously, in case abnormity is found, currently data direction is calculated by pca method, and compared with fault character direction storeroom, thereby fault is diagnosed
不斷觀察模型的平方預測誤差（ spe ） ，一旦發現異常，利用主元分析方法，求出當前數據的特徵方向，並與故障特徵方向庫進行比較，從而診斷出故障來。
分享友人