相對方差 的英文怎麼說

中文拼音 [xiāngduìfāngchā]
相對方差 英文
relative variance
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 相對 : 1. （面對面） opposite; face to face 2. （非絕對的） relative 3. （比較的） relatively; comparatively
  • 方差 : dispersion
  1. The relations between relative measurementerror resulting from temperature and heat distensibility coefficient of coil ’ s framework andwindingcoilwerecarriedout. theinfluenceofelectromagnetisminterferenceontheaccuracyof rogowski coil, as well as the effect of temperature on integraph, were studied. somemeasures based on the above investigating results were proposed to insure the precision ofrogowski coil sensor head, such as the selection of materials and facture methods, improvment of technics and design of additional compensation

    利用建立的rogowski線圈的數學模型對溫度和外界干擾磁場的影響進行了分析，得出了溫度造成的相對誤差與線圈骨架和繞組線圈熱膨脹系數之間的關系;從兩個方向上分析了干擾磁場對線圈精度的影響;分析了溫度對積分器的影響等。
  2. The s - l - e experiment data for the eight binary condensed systems of fatty alcohol / fatty acid were treated by using the improved equation, and the equation was examined with experimental data. at the same time, we used ideal model to predict the tenary s - l - e of n - octadecane / lauric acid / stearic acid system, and we got an accurate result of the simple eutectic temperature. the relative error is 0. 51 % comparing with the experimental result, so we will offer a method of prediction for quickly obtaining multicomponent system phase change materials this article calculated the pcms quantities and energy saving effect in theory, designed the experimental apparatus to measure the energy saving effect, and analyzed the temperature equalization action of the pcms by comparing experiment

    利用這種方法，建立了適合醇-羧酸等系列二元體系的單參數margules方程，本文對醇-羧酸系列等8個二元凝聚體系的單參數margules方程的參數進行回歸，並利用整個實驗數據對模型進行了檢驗，另外，本文利用理想狀態模型對一個三元體系18烷-月桂酸-硬酯酸相圖進行預測，通過與實驗數據進行比較，預測的低共熔溫度與實驗測定溫度較為吻合，其相對誤差為0 . 51 ，這將為快速獲取多元體系的相變材料提供預測方法。
  3. Based on historic radiosonde data of changchun city, jilin province and xian city. shanxi province and on the typical model of profiles of cloud liquid water content for stratiformis, the coefficients of retrieval equation are obtained as the functions of height for each month from april to july in the two cities. furthermore, we explore the internal physics signification of retrieval coefficients ' distributing according to every month and have comparisons between the two cities. then the numerical simulation tests of the accuracy of retrieval results are given : the statistical relative deviation of retrieved values of l to the simulated " trues " on the ground is 15 - 25 % and that at altitude of 6km is 5 - 10 %, that means the retrieval method and implementation of the method are applicable to processing measurements of an airborne radiometer made in china recently

    本文介紹機載對空微波輻射計探測雲中路徑積分液態水含量（ l ）的輻射傳輸原理和反演方法；根據吉林省長春市和陜西省西安市的歷史探空資料和典型的層狀雲液水垂直分佈模式，得到這兩個地區4 - 7月各月的隨高度而變的反演公式及其系數的表達式；探索了和反演系數有關系的大氣的影響，並在各個月份之間進行了比較分析；給出了反演誤差的數值模擬檢驗結果：在地面反演值對『真值』的統計相對偏差是15 - 25 ，在6公里高度處為5 - 10 ，表明該方法已具有實用可接受的精度。
  4. The difference of two methods is relatively small and data of velocity accord preferably, the least absolute error is about 0. 001m / s and the least relative error is 0. 49 % in no boundary position, absolute error is big in the boundary positions which arouse measurement error

    將數值模擬的結果和數字圖像處理的結果相比較分析，發現兩種方法之間的速度差別較小，在非邊界點處兩種方法的速度數據符合相對較好，最小絕對誤差為0 . oolm / s ，最小相對誤差為0 . 49 % 。
  5. In the second part, we adopt a few typical error analysis methods, primarily including the relativity analysis and the regression analysis, to analyses the relative error and absolute error of the time error, spatial data error and statistic data error of the raw input data in the model. then, we take each influence factors in the model into the relativity analysis and the regression analysis. finally, we synthesize the results of the above error analysis to figure out the theoretic accuracy of that model as 87 %

    第二部分主要是採用幾種典型的誤差分析方法，主要包括相關性分析和回歸分析，對模型的原始輸入數據的時間誤差、空間誤差和統計數據誤差進行了相對誤差和絕對誤差的分析，然後又對模型中各影響因子進行了相關分析和回歸分析，最後綜合以上誤差分析的結果得出該模型的理論精度為87 。
  6. On - line results indicate that the predicted results are more accurate with a relative error within 3 %

    應用結果表明，採用本方法預報軋制力時精度優于傳統的數學模型，相對誤差可以控制在3 %以內。
  7. It has been proved in many examples that the bp algorithm based in the square sum of the relative error is better than the conventional bp method

    通過大量算例檢驗證實，在基於相對誤差平方和為檢驗標準前提下，利用所給演算法求得的擬合值或預報結果優于傳統的基於絕對誤差平方和作為目標函數的bp演算法所得結果。
  8. Temperature predicting ann model for the next 24 hours is established. by this method, mean absolute error ( mae ) is reduced to 0. 4512 ? from 0. 6663 ? that is calculated by improved ashrae calculation method

    建立了溫度24小時提前預測的人工神經網路模型，使得24小時提前逐時溫度預測平均絕對誤差從改進ashrae計算方法的0 . 6663降低到了0 . 4512 ，平均相對誤差從2 . 02降低到了1 . 36 。
  9. Based on the multi - scale representation theory, we present a reduced order model for the solving of the inverse problem. also the relative error covariance matrix is used to analyze the performance of models with different orders ; 4

    基於小波多尺度表示理論給出逆問題求解的多尺度降階模型，同時用相對誤差協方差矩陣對階數不同的降階模型的估計精度進行分析； 4
  10. By means of error analysis of recursion process of precise integration, it is found that the essential reason of obtaining the high precise numerical results of exponential matrix in the precise integration method is that the relative error of numerical computation is not enlarged in a whole recurrent process

    通過對精細積分法遞推過程的誤差分析，發現該方法能獲得高精度數值結果的根本原因是：數值計算的相對誤差不隨遞推過程的進行而擴散。
  11. In order to ensure the real - time monitor this design choose special dsp chip and high - efficiency a / d transfer chip, the former ensure the time is enough to complete the calculation. tests proved that this equipment can satisfy the requirement of international standards about harmonic detection

    論文提出了基於dsp的電能質量在線檢測最小測量系統的設計方案。論證了用於電能質量檢測系統的a / d轉換器的位數應大於等於16位，才有可能使各次諧波的檢測精度達到小於1 %的相對誤差。
  12. It is found that the fitting accuracy is higher and the mean relative error between fitted and standard value is less than 0. 3 %

    該方法的擬合精度較高，擬合值與輻射模式標準值的平均相對誤差在0 . 3 %以下。
  13. The attenuation indexes of vertical direction components and level radial components of blast earthquake wave in the condition of far range are all larger than the one in the condition of close range. based on upwards analysises, relevant control ways and safety defending technology of blast vibration are given from the aspects of blast equipments, blast parameters, landform physiognomy, blast methods. and taking the practical data from blast scene as the sample, the blast shockproofness are forecasted by the feedforward nerve network model based on the prior knowledge of blast shockproofness, the regress analysis method and experience formula method, which supply the technology gist for

    並且，以爆破現場的實測數據為樣本，採用基於爆破震動強度先驗知識的前饋網路神經模型、回歸分析法及經驗公式法分別對爆破震動強度進行了預測研究，為爆破施工參數的確定提供了技術依據，確保整個爆破工程順利安全進行，並對這三種方法的預測結果進行了對比分析;對比分析表明，三種預測方法計算出來的結果精度相差甚大，從檢驗樣本值與預測結果值之間的相對誤差可以看出，人工神經網路法預測的結果較其他方法更接近於實際值，回歸分析預測法的精度又要高於經驗公式預測法。
  14. Experimental results showed that this method was accurate, easy to operate and can he applied to quantitative analysis

    實驗結果表明，該方法準確可靠，測得異辛酸的相對重量校正因子為1 . 305 ，相對誤差2 . 0 % 。
  15. Based on current data of energy consuming quantum about rolling reheat furnace, its combined forecasting model was established by using conceptions such as the relative error, the tendency of the forecasted object and gray basic weight due to the method of fuzzy variable weight

    摘要基於已有的軋鋼加熱爐的能耗數據，引入了各預測方法的預測相對誤差、預測對象的變化趨勢和灰色基本權重等概念，建立了軋鋼加熱爐的能耗模糊變權重組合預測模型。
  16. As in many cases, people pay more attention to the relative error between actual output values and the idea output values, in this paper, an improved bp algorithm based on the smallest square sum of the relative error is proposed, which looks on the square sum of relative error between the idea output and the actual output as the object function

    考慮到在很多情況下，人們更關心預報模型的預報值與實際值的相對誤差情況，從而本文採用實際輸出與希望輸出的相對誤差的平方和作為目標函數，給出了一種基於相對誤差平方和為最小的bp演算法。
  17. A new approach, which is direct integration method with integral model ( dim - im ) to solve dynamic governing equations, is developed

    藉助分塊積分的概念，得到了一個求解線性動力學方程的積分型（相對於差分而言）直接積分法。
  18. In the past, the predicted results produced by neural network models were often evaluated by using the relative error has been widely applied to this problem

    過去，對神經網路預測結果的評價廣泛採用相對誤差方法。對于有隨機因素影響的樣本數據，該方法已經不再適用。
  19. The emulation indicates that only if some measures are adopted to decrease the projection points ' coordinate error, error of the distortion center would be less than 2 pixels and relative error of the distortion coefficients would be no more than 0. 1

    模擬表明，只要採用相應方法降低像點坐標的誤差，畸變中心的誤差小於2個像素，畸變系數的相對誤差不超過0 . 1 。
  20. In this paper the injection dispersion in an oscillatory flow mixer has been studied by using the flow visualization technique with a solution of blue dye as the tracer. the process of injection dispersion was monitored with a digital camera connecting to a computer that treated the video data stream synchronously to obtain the attenuation curve of relative deviation of the flow image ' s gray scale values

    實驗採用以藍色有機染料為示蹤劑的流動顯形技術，由攝像頭實時攝取注入分散過程的動態圖像，計算機同步分析視頻流數據，從而以在線監測的方式獲得流場圖像的灰度相對方差隨時間衰減的曲線。
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