隨機取數 的英文怎麼說
中文拼音 [suíjīqǔshǔ]
隨機取數
英文
random access-
Data mining, which has been considered as a important methods in the analysis of time series, received more attention came from boffin. data mining is a process which get the useful information from the vast 、 incomplete 、 noised 、 fuzzy and random data
數據挖掘技術是從大量的?不完全的、有噪聲的?模糊的、隨機的數據中，提取隱含在其中的?人們事先不知道的?但又是潛在的有用信息過程。The first one : fitting together ultimate values of every dimensions in one dimension - chain one by one, educing many equations by itself, calculating results, and comparing these results of close dimension to find maximal and minimal values. the second one : projecting all dimensions on two preestablished axis, then providing the solutions to analyze whether every projected dimensions is increscent or decreasing, and synthesize the effect of every projected dimensions to close dimension, educing many equations by itself, at last calculating the result of close dimension. the third one : according to monte carlo analysis, getting every dimensions " values from every dimensions " tolerances at random time after time, simulating the actual circumstances of mass production using these dimensions, and calculating reasonable results of close dimension economically
鑒于這類系統在各大中小型企業的廣泛應用與相對滯后的研究水平，本文提出了三種新的能切實地解決目前尺寸鏈計算機輔助分析解算中存在的各種難題的設計方案，第一種方案將尺寸鏈中各組成環能取的極值組合起來，自動列方程組，求解每個組合情況下的封閉環尺寸，最後比較這些結果，得出封閉環的最大最小值；第二種方案將尺寸鏈各組成環向預先設定好的兩個方向投影，之後再分析各尺寸環投影分量的增減性，並且提供了組成環兩個方向上的投影分量增減性不一的復雜情況下的解決辦法，綜合組成環各投影分量的增減性，然後自動列出方程組，最後根據各組成環的投影分量以及所列的方程組來確定尺寸鏈封閉環的尺寸；第三種方案以蒙特卡洛法為原理，在尺寸鏈各組成環的取值范圍內使用計算機產生大量隨機數，模擬實際大批量生產中的零件尺寸分佈情況，以更經濟更合理的方式分析、計算封閉環尺寸。Besides, this paper adopts the random finite element method, uses geometric and physical mechanical parameters that are relevant to lining weight of surrounding rock, coefficient of lateral pressure, height or buried depth of vertical loading, elastic resistance coefficients of surrounding rock, elastic modulus of support structure, unit weight of concrete, thickness of the structure as well as torsional strength and compression strength of concrete and etc., as random variables, applies the monte - carlo method to sampling by computer, preliminarily evaluates the reliability of bearing capacity and stability of molded concrete lining of the xuefeng mountain tunnel, and obtains the related displacement of the lining, mean value and variance of internal force, and computed the reliability index of lining structures
此外，本文採用隨機有限元方法，將圍巖容重、側壓力系數、垂直荷載高度或埋深、圍巖的彈性抗力系數、支護結構的彈性模量、混凝土容重、結構的厚度以及混凝土的抗扭與抗壓強度等與襯砌結構有關的幾何與物理力學參數作為隨機變量，應用蒙特卡洛理論進行計算機隨機取樣，對雪峰山隧道模注混凝土襯砌的承載力與穩定性的可靠度進行了初步評估，得出了襯砌的相關位移與內力的均值和方差，並計算出了相應的襯砌結構可靠指標。With accelerating pace of science development, the demands on capability of large - scale information analysis are increasing. data mining is the process through which we can extract hidden but useful knowledge from half - backed, noising, fuzzy and random data sets
數據挖掘（ datamining ）就是從大量的、不完全的、有噪聲的、模糊的、隨機的數據中，提取隱含在其中的、人們事先不知道的、但又是潛在有用的信息和知識的過程。Anyone know how to generate data for arima by sas ? or seasonal arima model
主題:弱弱的問：如何在sas數據集中隨機取樣本？The thesis task is a part of the serial number project of 500mhz random sampling wideband digital storage oscillograph, 2002
本課題是2002年的型號項目「 500mhz隨機取樣寬帶數字存儲示波器」預研的一部分。Another 25 premature infants with study group matched gestational age, weight, and apgar score, who had been previously treated at this nicu from 1990 to 1992 served as control group
另外1990年至1992年隨機取樣25位懷孕周數、出生體重和實驗組一樣的早產兒為對照組。High - speed random sampling of high - speed digitizing storage oscilloscope is discussed in this thesis and which are mainly analysed in the time - domain and the frequency - domain
本課題研究對象是高速數字存儲示波器的高速隨機取樣變換技術。主要從頻域和時域兩個方面加以分析論述。This paper deals with the problem of non - uniform weed numbers obtained with all types of random sampling methods, discussing the importance of statistical control methods in herbicide efficacy evaluation and showing pertinent calculations
針對隨機取樣中的各樣方內雜草數目不一致問題，討論了統計控制方法在除草劑藥效評價中的重要性以及計算過程。Secondly, the mathematical radiation extinction model of nonspherical particle is developed based on t - matrix method, and a computer program is designed to calculate the extinction cross section, scattering cross section, absorption cross section and scattering phase function of fixed or randomly oriented axially symmetric particle
然後根據t矩陣方法，採用回轉體微粒消光特性的計算模型編制出的相應程序，對固定取向和隨機取向的非球形回轉體微粒的消光截面、散射截面、吸收截面及散射相函數進行了計算。Using optic sieving to obtain the gradation curve for particles with random parameters
用圖像篩選法求取帶有隨機參數之顆粒堆的質量分級曲線In the time - domain, based on the principle of random sampling of dso. two way ( " time amplifing in dual slope integral " and " time - voltage convert " ) are implemented to measure the time between the system triger and writing clock. thus random sampling interpolate can be done to measure repeated signal in high frequency with the a / d convert and controller which frequency are lower
在時域，根據數字示波器隨機取樣原理，用兩種方法（雙斜率積分時間放大測量方法和時間? ?電壓轉換測量方法）測量數字示波器系統觸發和采樣寫時鐘間時間間隔，用低速a / d轉換器及控制器進行模?數轉換和控制，以此進行隨機取樣內插，從而實現了對高頻率重復信號的測量。The rough degree of the target surface is the important factor that influences the scattering characteristic of the target laser. the study of the rough surface scattering is very important to the identifies and characteristic distill of the space target. usually on the study of in the past rough surface scattering, the period function or random function are the mathematics model of the rough surfaces
粗糙表面散射的研究對空間目標識別和特性提取具有非常重要的意義，在過去的粗糙表面散射研究中，通常採用特定的已知周期函數或隨機函數作為粗糙表面的數學模型，但在自然界中粗糙面既非純周期也非完全隨機的。Time domain noise is simulated by the mathematical pseudo uniform or normal random variable and coupled to deterministic signals such as rectangular ( rect ), triangular ( tria ), unit step exponential ( uexp ), even exponential ( eexp ), or gaussian ( gauss ) pulse voltages in finite number of time samples in finite time period
用數學類真均勻或常態隨機變數模擬時域雜訊，與定然時域訊號如，方形、三角、指數遞減、或高斯等電壓脈波在有限時域?圍之有限個時域取樣結合。Data mining means the process of nontrivial extraction of implicit, previous unknown and potentially useful information and knowledge from the large amount, incomplete, noisy, fuzzy and random data
數據挖掘，指的是從大量的、不完全的、有噪聲的、模糊的、隨機的數據中，提取隱含在其中的、人們事先不知道的、但又是潛在有用的信息和知識的過程。Data mining is the process of extracting hidden, unknown but potential useful information and knowledge from vast, incomplete, noisy, fuzzy and random datum. data mining technology is oriented to application
數據挖掘是從大量的、不完全的、有噪聲的、模糊的、隨機的數據中，提取隱含在其中的、事先不為人知的、但又是潛在有用的信息和知識的過程。And they ca n ' t take into account distributing of crops and water requirement and water content of soil. aiming at the limitations of this irrigation system, a expressions about design flow of pipe networks is set up by the probability methods. a model of stochastic non - linear programming by random irrigating is presented to optimize network of micro - irrigation
論文針對這種灌溉制度的缺點，引入管網流量設計保證率、概率約束等理論，用概率論的方法推求了隨機灌水條件下管網設計流量的計算公式，並建立了隨機取水條件下微灌系統管網優化設計隨機非線性規劃數學模型。Data mining is the process of abstracting unaware, potential and useful information and knowledge from plentiful, incomplete, noisy, fuzzy and stochastic data, which is deemed to one of a foreland of data mining system and a promising cross - subject
數據挖掘（ datamining ）就是從大量的、不完全的、有噪聲的、模糊的、隨機的數據中，提取隱含在其中的、人們事先不知道的、但又是潛在有用的信息和知識的過程。Data mining is the process of abstracting unaware, potential and useful information and knowledge from plentiful, incomplete, noisy, fuzzy and stochastic data, which is deemed to one of a foreland of data mining system and a promising cross - subject. cluster analysis is one of the most important research domains of data mining
數據挖掘是從大量的、不完全的、有噪聲的、模糊的、隨機的數據中，提取隱含在其中的、人們事先不知道的、但又是潛在有用的信息和知識的過程，被信息產業界認為是數據庫系統最重要的前沿之一，是信息產業最有前途的交叉學科。It is important to a excellent monitor system for digitizing wide band oscilloscope, so our work is meritorious 。 modularization program design and optimized arithmetic make sure higher efficiency of our program
因此，本課題的實踐在隨機取樣數字化示波器技術的研發中佔有很重要的地位。本課題由於採用了模塊化程序設計和優化的演算法，使得監控軟體有著很高的效率。分享友人