null test method 中文意思是什麼

null test method 解釋
零點測試法
  • null : adj 1 無效力的，無束縛力的。2 無效的，無用的，無益的；無價值的。3 沒特徵[個性]的，沒表情的。4 〈...
  • test : n 1 檢驗，檢查；考查；測驗；考試；考驗。2 檢驗用品；試金石；【化學】試藥；（判斷的）標準。3 【化...
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. Standard test method for measuring extreme heat - transfer rates from high - energy environments using a transient, null - point calorimeter

    用瞬變零點量熱器測量高能環境的超級傳熱速率的方法
  2. An optimizing arithmetic for calculating the best - fit sphere is also proposed, the result shows better accuracy is reached comparing to " three points method ", from 107. 8umrms to 25. 66umrms. during interferometric optics test with null lens, " nonlinear errors " of the testing coordinates will be introduced. a method based on ray - tracing, nonlinear fitting and coordinate transferring is proposed to eliminate these errors

    在ccos控制模型及理論計算方面，提出了一種適用於高次離軸非球面最接近球面計算的優化演算法，經計算，某矩形離軸非球面最接近球面半徑的求解精度較傳統的「三點法」有了較大的提高，理論加工余量由原來的107 . 8umrms降低到25 . 66umrms ；提出一種基於磨頭與工件的相對位移量的控制模型，並且開發了阻尼卷積迭代演算法，引入「虛擬加工」的概念進行迭代求解和參數評價。
  3. Moreover, a strategy for imputation of null values based on changed precision model is put forward to improve anti - disturbing ability of model secondly, several primary algorithms are indrouced and discussed, the direction and target of discretization is analysised, to gain logical cuts, a method to discretize continuous attributes based on rough entropy is brought forward at last, the potential client datamining system in electronic commerce is put forward, all given algorithms is applied to the system, and compared by test results, and the new idea of this paper is simply described and some problems in this paper that need to improved on are proposed

    然後，對目前流行的離散化演算法進行了詳細的分析和評價，指出了離散化的方向和目標，並提出了基於粗糙信息熵的離散化演算法，以便在保證劃分后決策表相容性的前提下，獲得比較合理的劃分點。最後，提出了電子商務的潛在客戶挖掘系統，並將前面提出的基於粗集的演算法理論應用到該系統中，同時和其他幾種現有的數據補齊和離散化演算法進行了實驗比較和結果分析。並指出本文創新之處以及存在的問題和努力的方向。
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