抽樣次數 的英文怎麼說

中文拼音 [chōuyàngcìshǔ]
抽樣次數 英文
frequency in sampling
  • 抽 : 動詞1 （把夾在中間的東西拉出; 提取） take out （from in between） 2 （從全部里取出一部分; 騰出） ...
  • 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
  • 次 : Ⅰ名詞1 （次序; 等第） order; sequence 2 [書面語] （出外遠行時停留的處所） stopping place on a jou...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 抽樣 : [統計] sample; sampling; specimen; samples draw
  • 次數 : number of times; frequency
  1. Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value

    同時，由於poisson分佈的特性，我們知道不存在其參數區間長度小於0 . 5的置信區間，基於這些情況，我們主要展開了以下兩個方面的研究：一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間， wald置信區間， bayes置信區間等進行分析比較，發現了一些缺陷，針對這些缺陷，我們進行適當的修正，並得到幾種性質較好的置信區間如：修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度，我們提出了一種漸近的兩階段區間估計程序，並利用數值計算的方法，在各種置信系數與區間長度限定下，算出了最優的第一階段觀測次數（抽樣量） ，大量數據表明，本文考慮的方法性態良好，具有應用價值。
  2. The commercenet organization is working to coordinate industry, government, and academic efforts to advance practices and technologies that enable electronic commerce through activities such as the eco framework, a project to develop open registries for interchange of semantics

    驅動程序以及與前面相同的數據庫名稱，但是，這一次它從issues . rdf文件讀取數據，如果還記得的話，該文件包含從樣本問題跟蹤器文件中抽取的元數據。
  3. Secondly ， the author point out the problems of development of chinese tourism marketing for example ， the tourism marketing is not perfect ， and the marketing kind is not complete ， and the system of tourism marketing is imperfect and so on in the end ， the author gives some advice how to settle these problems in order to make chinese tourism industry great progress the system of tourism maketing should be meliorated ； model of sales promotion of tourism product should be improved ； new objective tourism marketing should be developed ， for instance ， we should develop education tourism marketing ， rural tourism marketing and the rich residents of tourism marketing many methods of demonstration are adopted ， qualitative analysis and quantitative analysis are integrated ； deductjve reasoning and induction are expioited with ease ； the author anach importance to empoloy relative theorv ， of tourism ， at the same time ， the researching of the calse is emphasized

    這篇論文針對我國目前的旅遊市場進行宏觀分析，首先就我國旅遊市場的宏觀背景即國內旅遊市場發展背景和國際旅遊、旅遊市場研究進展和趨勢進行初步探悉，運用現實的統計數據和抽樣調查數據進行分析論證；其次就我國目前旅遊市場的現狀和存在的問題進行闡述和分析，然後針對我國目前旅遊市場的特徵和存在的問題提出發展戰略和解決措施，分析問題的方法上主要採用抽樣調查、比較分析法、演繹與歸納、定量與定性相結合等。
  4. 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。
  5. This system is set up on the existing search engine foundations through web services " technology, has solved variety and non - structural web data with xml technology, has formed web multi - level data base, and constructed the system structure in high performance of data warehouse, utilized midas technology to form the high - performance index storehouse structure, has remedied the deficiency of search engines at coverage, accuracy etc, and improved efficiency of information retrieval

    該系統通過webservices技術，建立在現有搜索引擎基礎之上，以xml技術解決了多樣性和非結構性的web數據轉換，形成了web多層次數據庫，利用了web挖掘面向結構化或半結構化數據的智能化數據抽取和知識發現過程，並且構造了數據倉庫的高性能查詢體系結構? hpqs ，利用midas技術形成了高性能索引庫結構，彌補了當前搜索引擎在覆蓋范圍、準確率、復雜查詢語言的使用和結果表現方式等方面的不足，改善了信息檢索的效率。
  6. A popular solution toimprove the speed and scalability of the association rule mining is todo the algorithm on a random sample instead of the entire database. buthow to effectively define and efficiently estimate the degree of errorwith respect to the outcome of the algorithm, and how to determine the samplesize needed are entangling researches until now. in this paper, an effective and efficient algorithm is given based on the pac probably approximate correct learning theory to measure and estimatesample error

    關聯規則挖掘作為數據挖掘的核心任務之一，由於其任務本身的復雜性通常需要多次整個掃描數據庫才能完成挖掘任務且頻繁模式可能產生組合爆炸，使得從原始的大規模數據集上抽取一部分樣本，在其上尋找用戶感興趣的近似規則成為目前提高演算法效率和可擴展性的一種簡單有效的現實可行方法之一。
  7. Acceptance number sampling procedures and tables for inspection by attributes of isolated lots

    獨立批次計數檢驗用合格判定數抽樣程序和表
  8. Step up the frequency of taking water sample from the swimming pool from at least twice a day to every hour and consider closing the swimming pool temporarily when community infection rate is high

    社區感染率高的期間，應增加抽取泳池水樣本化驗的次數，從最少每天兩次到每小時一次，或考慮暫時關閉泳池。
  9. For the second problem, we transform it to the computation of permanent, and monte carlo method and markov chain monte carlo method are used to sample

    在計算m -齊次b zout數上，我們將它的計算轉換為矩陣積和式的計算，通過montecarlo方法和markovchainmontecarlo方法來進行抽樣。
  10. By comparing the calculation methods of chird number parity progression ratios parity progression ratios and based on the data of 1 national population sampling survey of 2000, this paper calculate the child number parity progressive ratios respectively by the variables of age, urban - rural and region to reveal the levels and distribution of the lifetime fertility of chinese women

    摘要通過孩次遞進比計算方法的比較選擇，本文運用第五次全國人口普查1抽樣數據分別計算中國2000年育齡婦女的各年齡別孩次遞進比、城鄉孩次遞進比、區域孩次遞進比，揭示中國育齡婦女生育水平的分佈狀況。
  11. This paper studies the typical two - unit series maintained system, the distributing of the units life have been known. by random sample to the life of units and simulate with computer, uses monte - carlo method, counts the failure time of every unit, and failure rate - the reliability character of two - unit series system is derived, together with its curve

    摘要研究了典型的兩元件串聯的可修系統，在已知元件的壽命分佈的條件下，應用蒙特卡羅方法，對元件的壽命進行隨機抽樣並進行計算機模擬，通過統計每個元件故障的次數，得出了兩元件串聯可維修系統的可靠性特徵量故障率，並繪出了曲線。
  12. Single sampling procedures and tables for product quality audit of small population by attributes

    產品質量監督小總體計數一次抽樣檢驗程序及抽樣表
  13. Two - stage sampling has only one chance of using the information provided by samples to determine the following plan. pure sequential sampling, however, could use sampling size sparingly. in addition, in some cases, pure sequential procedures have to be applied to acquire the confidence intervals which meet the demands

    兩步抽樣，只有一次機會利用樣本信息決定今後計劃，採用純序貫則可使平均抽樣次數節省，另外，在一定的分佈族中必須採用純序貫才能取得滿足要求的區間估計。
  14. As a part, the construction quality index ( cqi ) can be used for evaluating the chinese construction quality status ; and some technical meth2ds such as spot checks and analytic hierarchy process can be used for getting macro and micro construction quality assessment results

    該體系以建設工程質量指數（ cqi ）作為我國建設工程總體水平的綜合衡量指標，並運用抽樣調查、項目質量評價的層次結構模型等一系列技術方法，逐步得出建設工程質量的微觀和宏觀評價結果。
  15. In this paper, we estimated the magnitude and the proportion of the aged poor population by rural and urban and by provincial - level category in shandong, based on the fifth national census and the " china cross - sectional rural - urban elderly sample survey " conducted by the china aging research center in december 2000

    摘要本文利用第五次人口普查數據和中國老齡科研中心於2000年12月組織的「中國城鄉老年人口狀況一次性抽樣調查」數據，經過加權處理后對山東、以及山東分城鄉的貧困老年人口的比例和數量進行了估計。
  16. Build up the customers " developing model of smcc by using current analysis way, and predict the amount of customers in 2002 year. 2. first introduce the mobile service marketing ' s concept as the ? re of increasing customers " satisfaction, reveal the logic connotation of mobile service marketing

    本文在分析和研究中有以下幾點創新： 1 、採用趨勢線分析法建立了一個四川移動通信公司用戶發展模型，並用以較為滿意地預測了2002年的用戶發展數量； 2 、首次提出了以提高用戶滿意度為核心的移動服務營銷理念，揭示了移動服務營銷的邏輯內涵； 3 、設計了四川移動用戶滿意度調查模型和抽樣方法。
  17. Single sampling procedures and tables by attributes for product quality audit

    產品質量監督計數一次抽樣檢驗程序及抽樣方案
  18. The population of ethnic minorities in china was only 34. 013 million according to the first national census of 1953, but it had reached 108. 46 million in 1995

    1953年，全國第一次人口普查時，少數民族人口只有3401 . 3萬，而據1995年1抽樣調查統計，全國少數民族人口已達到1 . 0846億人。
  19. Single sampling inspection plans having desired operating characteristics part 1 : sampling by attributes

    有預期操作特性的一次抽樣檢查計劃.第1部分:計數抽樣
  20. The relevant sample data of census are counted in 1986

    1986年此次普查的相關抽樣數據被統計出來。
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