square deviation 中文意思是什麼

square deviation 解釋
平方偏差
  • square : n 1 正方形，四方塊，四角；方形物。2 （方形）廣場；〈美國〉（四面都是馬路的）方陣建築；街區；（方...
  • deviation : n 1 脫離，越軌，背離 （from） 。2 偏向，偏差。3 （統計上的）誤差。4 【航海】（故意）偏航。5 【數...
  1. The positive square root of the variance is called the standard deviation.

    方差的正的平方根叫做標準差。
  2. Standard deviation in statistics, a measure of the dispersion of a frequency distribution : it is the average magnitude of deviations from the center of normal curve, calculated by squaring all the deviations, calculating their mean, then finding the square root of the mean

    標準偏差：統計中，一種衡量數據組分佈的分散或變化情況的數據，是偏離正態分佈中間位置數據大小的平均值。
  3. However we want to get the least absolute value of frequency deviation not the least square sum of it

    但是實際需要的是使頻率偏差的絕對值最小而不是頻率偏差的平方和最小。
  4. Based on the principle of the cooperation, i. e, the correlative stochastic equations are located on the same probability level, the linear regression with fuzzy weight analysis is adopted to fit the test data, and the three - parameter stress - life curves of the mean and the mean square deviation are obtained

    根據協同原理，即相關聯的隨機方程動態地處于同一概率水準，採用模糊隨機加權線性回歸方法對試驗數據進行擬合，得到了三參數的應力-壽命模型均值和均方差曲線，從而求得在給定應力下各可靠度的疲勞壽命。
  5. 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。
  6. ( 2 ). according to the system indices and requirements together with the technology characteristic, it researches the capture possibility of apt capturing system. then it introduces the common scan methods, such as raster, spiral, raster spiral, rose and lissajo. ( 3 ). it makes a detailed simulation analysis of the raster and spiral scan, analyze the connection between capture probability, capture time, system index at different capture resolution angle, capture range, vibration angle extent and terminal location distributing mean square deviation

    其中對幾個關鍵部分進行了詳細分析:計算了目標角反射器的激光雷達散射截面（ lrcs ）值，研究了qd與ccd對目標位置角度的計算方法和空間解析度; （ 2 ）根據系統指標和要求並結合現有國內技術特點研究了apt捕獲系統掃描的捕獲概率問題，然後分析了幾種常見的掃描方式:矩形（ raster ）掃描、螺旋（ spiral ）掃描，矩形螺旋（ rasterspiral ）掃描，玫瑰形（ rose ）掃描以及李薩如形（ lissajo ）掃描; （ 3 ）對分行掃描和螺旋掃描進行了詳細的模擬分析，分析了它們在不同捕獲分辨角、捕獲范圍、振動角振幅和終端位置分佈均方差時的捕獲概率、捕獲時間與系統常數之間的關系。
  7. The paper studies composition of grasshopper community in different habitats, found that differences in family, genus and species and analyzed the causes of those. the author analyzed the following aspects by spss software and the measure of euclidean distance : ( 1 ) analyzed the relationship between grasshopper species and geographical distribution and divided 9 forestry belt into 3 main habitat model : low mountain conifer and broadleaf integrated forestry belt ; low mountain chanbai conifer forestry belt and middle - high conifer - betula ermam / - tundra belt ; adopted sum of deviation of square to clustered ecological species groups, and thus divided 48 grasshopper species into 3 main category, 12 ecological species groups

    在長白山地區蝗蟲生態分佈特點的研究中，主要應用spss軟體包、採用euclideandistance測度法對以下兩方面內容進行了分析： （ 1 ）對長白山地區蝗蟲地理分佈關系進行了分析，將長白山9個林帶劃分為三大生境型：低山針闊葉混交林帶、低山長白松林帶和中高山針葉?岳樺?苔原復合體； （ 2 ）利用離差平方和法對生態種組進行等級聚類，結合實地調查結果，將48種蝗蟲劃分為三大類12個生態種組。
  8. Difference surface in combination with the least square method is employed for the evaluation of topographic deviation for sbg

    將差曲面和最小二乘法相結合進行螺旋錐齒輪拓撲誤差評定。
  9. Geometrical and physical meanings of difference surface are presented, and the parameters of tooth surface topographic deviations are derived. in addition, the complete mathematical formulae of the 0th, the 1st, 2nd order form deviations is proposed, and diagnostic parameters of each order form deviation is gotten by the least square method, which lead to evaluate the tooth surface topographic deviation quantificationally

    系統地給出了差曲面的幾何意義和物理意義，提取了齒面拓撲誤差參數;給出了零階誤差、一階誤差、二階誤差的完整數學公式，並且用最小二乘法得到了各階誤差的特徵參數值，實現了對齒面拓撲誤差的定量評定。
  10. Taking two protein complexes, we performed md simulations on their candidate structures. according to the variations of the mean square deviation ( msd ) of the structures in md trajectories relative to the initial structures, the false structures can be excluded

    以兩種蛋白質復合物為例，對其候選結構進行md模擬，根據md軌跡中構象相對于初始北京工業大學工學碩士學位論文摘要一構象的平方平均偏差（ msd ）隨時間的變化來輔助打分函數排除錯誤構象，得到了較好的結果。
  11. Now the common algorithm which is used to calculate the parameter of the compensation network is the method of least squares which can calculate the result to make the least square sum of frequency deviation least

    目前國內外計算補償網路參數的常用演算法是最小二乘法，最小二乘法能夠求取使得使頻率偏差平方和最小的值。
  12. In training of back - propagation neural network, parameter adaptable method which can automatically adjust learning rate and inertia factor is employed in order to avoiding systemic error immersed in a local minimum and accelerating the network ' s convergence ; introduced the further optimization of the network ' s structure, it gives the research result of selection of the hidden layers, neurons, and the strategy of re - learning, compared the sums of the deviation square of this algorithm with conventional bp algorithm, as a result, the approach accuracy and the generalization ability of the network were extremely improved

    在對前饋神經網路的訓練中，使用參數自適應方法實現了學習率、慣性因子的自我調節，以避免系統誤差陷入局部最小，加快網路的收斂速度；提出了優化bp網路結構的實驗研究方法，並給出了有關隱含層數和節點數選擇以及再學習策略引進的研究結果。將該演算法同傳統bp演算法的預測偏差平方和進行比較，結果證實網路的逼近精度及泛化能力均得到了極大的提高和改善。
  13. Data was analyzed by frequency distribution, mean, standard deviation, chi - square test, and stepwise regression

    對疾病所抱持的態度，則多呈正向之態度。
  14. The pole location technique is proposed and the location of viscoelastic dampers is optimized. the pole location technique is contrasted to the viscoelastic dampers location method that dampers is located by mean square deviation of relative displacement between layers of offshore platforms

    研究了極點配置技術，對粘彈性阻尼器進行位置優化配置，同採用將粘彈性阻尼器設置在平臺層間位移均方差最大處作了比較。
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