sampling random 中文意思是什麼

sampling random 解釋
隨機抽樣
  • sampling : n. 1. 取樣（品），取標（本）〈指行動或程序〉。2. 樣品，標本。3. 剽竊拼湊歌曲。
  • random : n 〈罕用語〉胡亂行為，偶然的[隨便的]行動[過程]。adj 1 任意的，胡亂的，隨便的；（話等）信口亂說的...
  1. In accordance with the problem that the fcm algorithm is quite time - consuming for search out cluster cancroids and may not be suitable for on - line modeling and control. this dissertation proposed an improved fuzzy identification method based multistage random sampling fuzzy c - means clustering algorithm ( mrfcm ). it has higher approximate precision and the cpu time has slowed down sharply compared with the common fuzzy

    Johnyen和liangwang介紹了幾種應用於模糊模型的信息優化準則，本論文在此基礎上對統計信息準則進行一些改進，並與快速模糊聚類和正交最小二乘方法結合，提高了模型的辨識精度和泛化能力。
  2. The materials as explant in transformation come from birch leaf, stem segment and leaf stalk, and the spider toxin gene was used as foreign gene for this transformation experiment. it showed that the best explant was the big leaf, on which the transformation frequency was 22 %. by gus detection, there were 43 percent of the plants with kanamycin resistance, and 100 percent of positive result, by pcr amplification, was gotten from random sampling

    利用雙元載體的根癌農桿菌lba4404菌株（ agrobacteriumtumefaciens ） ，含質粒pyhy （目的基因及npt 、 gus基因） ，對白樺試管苗莖段，葉柄，葉片三種外植體進行侵染，結果表明：大葉片生長勢強，為轉基因的最優外植體，轉化率能夠達到22 。
  3. There are many applications for random sampling

    隨機抽樣有許多應用場合。
  4. Proportion allocation in stratified random sampling

    按比例分層隨機抽樣
  5. The regression estimator in cluster random sampling

    整群抽樣回歸估計量
  6. Conduct first article inspection and random sampling inspection

    進行首件檢驗和抽查檢驗。
  7. Standard practice for random sampling of construction materials

    隨機采樣的建築材料的標準實施規程
  8. Methods for random sampling by utillzing dices of random number

    利用隨機數骰子進行隨機抽樣的方法
  9. Methods for random sampling by utilizing dices of random number

    利用隨機數骰子進行隨機抽樣的方法
  10. Equivalent sampling has sequence sampling and random sampling

    等效采樣分為順序采樣和隨機等效采樣
  11. We did the random sampling of five pieces per batch of 100

    我們在每批一百件的貨品中取五件隨機抽樣。
  12. 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。
  13. In such problems, there are too many test cases to evaluate all the candidates, and a random sampling of test cases can be uninformative

    在這類問題中，對于所有的候選解而言，由於其數目太多而無法對它們進行評估，而且隨機的測試事例采樣也不能提供有用的信息。
  14. Sampling : grade and staple : 10 % to be sampled at random for each lot of bales ; micronaire and strength : one half of the 10 % is to be sampled at random for each bunch of bales

    抽樣：品級、長度：從每批棉包中隨機抽樣10 ；馬克隆值和強度：從品級、長度抽取的樣品中隨機抽取其樣品總量的一半，作為馬克隆值和強力的檢驗樣品。
  15. 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。
  16. Random number generators are used in many areas including computer simulation, monte - carlo techniques on numerical analysis, test problem generation for the performance evaluation of computer algorithms, statistical sampling, and so on

    隨機數發生器在很多領域有廣泛的應用，包括計算機模擬、數值分析上的蒙特卡羅方法、評估演算法的測試問題、統計抽樣等等。
  17. Based on the review of and comment on the concepts and theories of attitude and travel attitude and the current research situations about travel attitude, according to three element theories of the attitude, by way of random sampling of strata, the paper has carried on measurement of travel attitude of zhengzhou city, wuzhi county and yuanyang county resident. in writing this paper, the author designed a travel attitude inventory, which had been proved to be of good reliability and validity. then it carries on factor analysis and cluster ' s analysis to the measurement

    本研究在對態度、旅遊態度的概念、理論和旅遊態度的研究現狀進行述評的基礎上，依據態度的三元素理論，採用經過信度、效度檢驗的自編旅遊態度問卷，以分層隨機抽樣的方式，對鄭州市、武陟縣和原陽縣居民的旅遊態度進行了測量，並對測量數據進行因素分析和聚類分析。
  18. 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。
  19. This course examines how randomization can be used to make algorithms simpler and more efficient via random sampling, random selection of witnesses, symmetry breaking, and markov chains

    這課程研究如何用亂數並透過隨意抽樣、隨機選擇證物、破壞對稱以及馬可夫鏈使得演演算法更簡單和更有效率。
  20. The sampling is attained by making use of percentiles of distribution function and pseudo - random order, also is applicable to multi - dimensional interval integrals and sampling random variables

    該方法是由抽樣分佈的分位點和偽隨機序復合構成的，適用於固定區域上多重積分的計算及隨機變量的抽樣。
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