隨機樣本 的英文怎麼說

中文拼音 [suíjīyàngběn]
隨機樣本 英文
chance sample
  • 隨 : Ⅰ動詞1 （跟; 跟隨） follow 2 （順從） comply with; adapt to 3 （任憑; 由著） let （sb do as he li...
  • 機 : machineengine
  • 樣 : Ⅰ名詞1. （形狀） appearance; shape 2. （樣品） sample; model; pattern Ⅱ量詞（表示事物的種類） kind; type
  • 本 : i 名詞1 （草木的莖或根）stem or root of plants 2 （事物的根源）foundation; origin; basis 3 （本錢...
  • 隨機 : random stochasticrandom
  • 樣本 : sample book; specimen; advanced copy; sample; muster; scantling; instance; statistics
  1. The qualification of multipactor and the characteristic of the angle and velocity of secondary electron were study. bring forward a improved model of multipactor and solve it by a random sample made by monte carlo, as a result, a critical curve of multipactor was gained

    提出了一個改進型的次級電子倍增研究模型，利用蒙特卡羅法生成的隨機樣本來求解這個模型，得到了工作在2 . 85ghz的介質片的次級電子倍增敏感度曲線。
  2. 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。
  3. By end of 1998, the nominal value of derivatives transactions had happened in the official exchange within 5 years increased from 7. 7 trillion u. s. dollars to 13. 5 trillion u. s. dollars, meanwhile, the nominal value of derivative securities ( otc ) increased from 8. 7 trillion u. s. dollars to 51 trillion u. s. dollars, then, the nominal value of unliquidated derivatives was total about 64 trillion u. s. dollars, and the academic field also emerged frontier science borrowing for the financial science, physics financial science, financial engineering, etc. 1973, black and scholes put forward the differential equation that any derivative securities prices based on any non - dividend paying stock must be satisfied, that is black - scholes differential equation

    Jamshidian . f在其1989年的文章中推導出零息債券的期權價格。奧托同樣在其1998年的論文中用統計物理學中的路徑積分方法推導出了基於零息債券為基礎的期權定價模型。本文在這些學者研究成果的基礎上，進行了更深層次的研究，在vasicek隨機模型的基礎上，打破上述學者及著名的black - scholes期權定價模型只能求解證券及其衍生產品價格平均值的限制，對零息債券和基於零息債券的期權的價格求解，並推導證券瞬時價格的分佈函數。
  4. This dissertation ' s problem just comes from this engineering background exactly. for this two kinds of cores, which were taken from the engineering place, this dissertation draws sample by computer and analyses the weight distributions, getting the weight curves, the middle weights, asymmetry coefficients and other physics characteristic indexes of them, and makes up the model samples which are similar to the factual weight distributions

    本文對施工現場採用的10 100kg和1 800kg重量范圍的堤心石進行了隨機抽樣和重量級配分析，得到了描述這兩種堤心石類別的重量級配曲線、中值重量、不均勻系數等物理特性指標，並由此制備重量級配相似的模型樣本。
  5. Panic disorder is characterized by the recurrent sudden attacks of physical and emotional anxiety symptoms, phobic avoidance behavior, and impairment of social function. in order to understand its prevalence, symptom patterns, and help seeking behavior, the hong kong mood disorders center of the faculty of medicine, the chinese university of hong kong conducted a large - scale telephone survey from april 16 to 25, 2002. 3, 004 respondents aged 15 to 60 ( 1, 446 males and 1, 558 females ) were randomly selected and interviewed

    驚恐癥是情緒病的一種，香港中文大學醫學院香港健康情緒中心委託香港中文大學香港亞太研究所，于本年4月16至25日以隨機抽樣形式透過電話訪問了3 ， 004位年齡介乎15至60歲的人士，當中1 ， 446為男性， 1 ， 558人為女性，了解香港人患驚恐癥的比例、癥狀及求醫意欲。
  6. In this paper, we study the type - i life test of lognormal, normal and weibull distributions with large numbers of samples, get the approximate confidence regions of the parameters, and do many stochastic simulations on the theoretical basis with computer

    本文研究了大樣本定時截尾壽命試驗下對數正態分佈、正態分佈和weibull分佈參數的近似置信域，並在理論基礎上進行隨機模擬。
  7. If the covariance stationary processes are one dimension, for given data, covariance function and spectral density function can be estimated, and there is no need to select kernel function and its parameters

    如果協方差平穩隨機過程的狀態是一維的，對給定的樣本點，給出了協方差函數的估計和其對應譜（密度）函數估計，而不必選擇核函數及其參數。
  8. To analyze the distribution of chinese decor industry customers " internal value index and to find the method of brand positioning based on customer internal value, the author apply the " graphics of consumers " internal value " - an new method on analyzing the customer internal value - to chinese decor industry. based on an customer survey and much desk research and the case analysis, the author deeply explain the consuming habit of decor industry customers, analyze the distribution of decor industry customer internal value index and the characteristic of customer internal value in subdivided decor industry market, and analyze the strong points and weak points in brand positioning of famous decor brand " ikea "

    本文是對消費者價值分佈和基於消費者價值的品牌定位的研究，旨在通過借鑒著名國際市場研究公司羅蘭?貝格戰略咨詢公司所開發出的「消費者價值分布圖解法」 ，並基於對中國上海204份隨機抽取的樣本所進行的問卷調查，深入分析中國家居市場消費者的價值元素分佈、消費者需求的變化趨勢、細分市場的消費者特徵，並探討國際著名家居品牌- - - - - -宜家家居- - - - - -在中國的品牌定位以及其品牌定位與其目標消費者價值分佈的聯系。
  9. The stochastic optimization method is brought forward, which makes a great amount of simulation of other bidder ' s biding in electrical market, as for every simulation, genetic algorithm is applied to solve the optimization problem, in consideration of the restraint of direct current network, one optimal bid is got, then using the average optimal bids in a great number of simulations as the last optimal bids. the program using c + + language of this method is programmed and examples are discussed for simulation, examples prove the bidding method ' s validity

    最後基於第五章的分析，提出了一種採用隨機優化和遺傳演算法相結合的競價方法，即對電力市場中各個競爭對手的報價作為隨機變量進行大量模擬，針對每一次模擬，在考慮直流潮流網路約束的情況下，用遺傳演算法求出一次模擬對應的最優報價，然後把大量模擬樣本求得的最優報價的均值，作為最優報價。
  10. While many theories concerning damage forecasting were put foreword, a different model of damage forecasting based on fuzzy probability will be presented in this paper. and it is reasonable to describe a variable like weight coefficient with fuzzy theory. in the end, the validity of the model is demonstrated well in the applications of one - storied brick bent frame column factories, one - storied reinforced concrete column factories, multistory masonry buildings

    國內外不少專家學者或研究單位先後提出了各種震害預測方法，本文在此基礎上，利用模糊理論，提出了模糊概率的震害預測模型，其模型能夠把兩類不確定性（一類是隨機上的，另一類是模糊上的）有機結合起來，而且對于權重這樣一個充滿著模糊性的變量，用模糊語言來處理是非常合理的；並應用於對單層磚排架柱廠房、單層鋼筋混凝土柱廠房以及多層磚房的震害預測，實踐證明此方法是比較精確的。
  11. In the genetic process of reproduction, crossover and mutation of the chromosomes in this method, these operators pr, pc and pm are produced randomly within some space, the scale of population and all kinds of genetic probability are also adjusted randomly so that the diversity individuals of population is ensured. the ga of dynamic population scale passes more information of paternal chromosomes to the offspring, which is beneficial to search the global optimization or quasi - global optimization

    該方法在染色體進行繁殖、交叉、突變的遺傳過程中，在某一范圍內隨機選取p _ r ， p _ c ， p _ m ，動態調整種群規模，保證了種群個體的多樣性；選擇同父本分別進行三種遺傳過程使得父本染色體中有更多的信息傳遞給子代，這有利於搜索全域最優解或準最優解。
  12. In rsdm, binary patterns are replaced by real - valued patterns, accordingly avoiding the coding process ; the outer learning rule is replaced by regression rule, therefore the model has not only the ability of pattern recognition but the ability of function approximation. the prearrangement of the address array bases on the distribution of patterns. if the distribution of patterns is uniform. then the address array is prearranged randomly, otherwise predisposed with the theory of genetic algorithm and the pruneing measure so as to indicate the distribution of patterns and improve the network performance. non - linear function approximation, time - series prediction and handwritten numeral recognition show that the modified model is effective and feasible

    在rsdm中，以實值模式代替二值模式，避免了實值到二值的編碼過程：以回歸學習規則代替外積法，使該模型在具有識別能力的同時具有了對函數的逼近能力；地址矩陣的預置根據樣本的分佈採取不同方法，若樣本均勻分佈，則隨機預置，否則利用遺傳演算法的原理和消減措施來預置地址矩陣，使之反映樣本的分佈，改善網路的性能。
  13. 15 naor m, reingold o. on the construction of pseudorandom permutations luby - rackoff revisited. journal of cryptology, 1999, 12 : 29 - 66. 16 naor m, reingold o. from unpredictability to indistinguishability : a simple construction of pseudo - random functions from macs

    Luby和rackoff是假定每個輪函數是隨機的，不考慮輪函數的設計而本文僅假定camellia演算法的非線性模塊是隨機的，降低假設條件，這樣假定更接近演算法本身的特性。
  14. First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by brewer, durbin, sampford, des raj, murthy, rao - hartley - cochran. then, at the basis of rao and bayless ' s study, we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super - populations, and compare the stabilities of estimators of the methods that given above. we find that the minor difference between two super - populations has great effect on the efficiency of the estimators for the population with moderately large coefficient of variation ( c. v. )

    本文首先從理論上介紹了若干種不等概率抽樣方法，它們的估計量、估計量的方差及其估計，其中包括有放回ppz及pps抽樣，不放回不等概率抽樣中的brewer 、 durbin 、 sampford 、 desraj ， murthy 、 rao - hartley - cochran等人的方法；其次，在rao和bayless兩人就樣本單元數n = 2的情形對上述抽樣方法進行比較的基礎上，將總體隨機地分成兩個子總體，視每個子總體取自不同的線性超總體，在文中，我們利用計算機實現隨機分組，並通過畫圖比較各方法估計量的穩定性，結果表明，對變異系數c . v . （ x ）較大的總體而言，兩個超總體之間的微小差異將對估計量的穩定性產生很大的影響，從而說明rao和bayless的比較結果還不夠完善。
  15. Abstract : a fuzzy and random method for estimating the three parameters ofweibull distribution was put forward. the method was tested and verified by the random samples obtained by monte carlo method. and the results showed that the estimating values of the parameters are close to the theoretical value

    文摘:提出了威布爾分佈三參數估計的模糊?隨機方法，並對蒙特卡羅方法產生的隨機樣本進行了驗證；結果表明，求得的參數估計值十分接近理論值。
  16. You can test package execution and data transformation with richly representative data, but more quickly because a random sample is used instead of the full dataset

    這樣，您就可以使用很有代表性的數據來測試包執行和數據轉換，而且這種測試更加快捷，因為它使用的是隨機樣本而不是全部數據集。
  17. Through proper sampling design, the selected households for march and the first half of april together formed a separate and scientific random sample by themselves and data collected on them could be used to draw inference on the overall situation

    透過恰當的樣本設計，三月至四月中的訪問住戶，組成一個獨立的科學性隨機樣本，所搜集得的資料可以用來推論整體的情況。
  18. Idea : we cannot measure the closeness of the estimates with the population parameter directly, but it is possible to use data from a random sample to construct a set of values that contains the true value with a certain specified probability

    我們無法直接衡量估計值和總體參數之間的距離，但是利用來自隨機樣本的數據構造一個取值的集合，使得真值在給定概率下屬于這個集合是可能的。
  19. Sampling methods for common distributing random numbers and the samples of random fields are proposed. combining the monte - carlo simulation technique with the one - dimensional discretization finite element method, the monte carlo - finite element method for stochastic analysis and the reliability computation of thin - walled box girders are proposed in this thesis

    建立了幾種常用分佈隨機數以及隨機場隨機樣本的產生方法；將蒙特卡羅數值模擬與薄壁箱梁一維離散有限元法相結合，提出了薄壁箱梁隨機分析和可靠度計算的蒙特卡羅有限元法。
  20. By means of trigonometrical progression method and the mainline track spectrum, the sample function of the chinese mainline railway track random geometric irregularity is simulated. with the data obtained from track geometry inspection car on qinhuangdao - shenyang special line for passenger transport and arma time series model, the sample function of high - speed railway track random geometric irregularity are simulated. based on existing literature, the artificial bogie crawl waves at various different speeds are randomly simulated

    根據我國干線鐵路軌道譜，採用三角級數法模擬出干線鐵路和準高速鐵路軌道不平順的樣本函數；根據秦沈客運專線高速試驗段軌檢車資料，採用arma時間序列模型模擬了高速鐵路軌道不平順隨機樣本函數；在既有研究資料的基礎上模擬出各種速度客車構架人工蛇行波；用隨機變量描述道床橫向剛度，並進行了隨機模擬；將振動理論和穩定理論結合建立系統的分析模型和運動方程；根據monte ? carlo法編制了車輛?軌道耦合系統隨機振動分析程序，進行了無縫線路隨機動力響應分析，通過試驗對計算模型、計算方法進行了驗證。
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