抽樣比率 的英文怎麼說

中文拼音 [chōuyàngbǐlǜ]
抽樣比率 英文
sampling fraction
  • 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
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 抽樣 : [統計] sample; sampling; specimen; samples draw
  • 比率 : ratio; proportion; rate比率計 ratio meter
  1. The confidence tests can also bring more convenience in engineering, as that the tests for the percentile and percentage of normal population that are difficult in hypothesis tests can be easily solved by the present method

    不但比傳統的正態分佈假設檢驗和抽樣檢驗具有更高的精度，而且更加便於應用，許多假設檢驗和抽樣檢驗難以處理的問題（如母體百分率和百分位值的檢驗） ，採用置信檢驗可以容易地得到解決。
  2. Average production length ( apl ) is introduced as the criterion for measuring control scheme performance. a model is developed with sampling rate and maximum false alarm rate as inputs to determine the optimum subgroup size and control limits as measured by apl

    本文以平均運行長度（ apl ）為衡量控制圖有效性的標準，以抽樣比例和最大可接受錯誤報警率為輸入，通過建立模型的方法，確定最佳的樣本容量和控制線參數。
  3. In video shot segmentation, an improvement to double - threold shot segmentation algorithm is provided, which uses multi - frame sampling technique and can improve the performance significantly on the detection of gradual transition. an abrupt transition detection algorithm is also developed on the basis of the closest pixels matching in spatio - temporal slice, which decreases the false rate and computing strength greatly

    在視頻鏡頭分割方面，提出了一種基於多幀抽樣的雙重比較鏡頭分割演算法，有效地提高了對視頻鏡頭漸變檢測的性能;同時，針對視頻鏡頭突變的檢測，提出了一種基於最近鄰像素匹配的時空切片鏡頭突變檢測演算法，該演算法顯著降低了突變檢測的虛檢率和計算量。
  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. By sampling survey method, from the aspects of bibliographical availability, the ratio of book forecasting, fields for description, description format, acquisition costs etc., the paper makes a comparative analysis among the main chinese books acquisition bibliographies, including xinhua book news, cip data, national new books information, and bibliographies compiled by publishers, and hope can provide useful experience information for the selecting of library acquisition bibliography

    摘要本文採用抽樣調查方法，對新華書目報（社科版與科技版） 、 cip數據、全國新書目和出版社自編書目等國內主要中文圖書采訪書目，從書目可供性、預告率、圖書預告征訂的實際可供時間跨度、著錄欄位、著錄格式（排版顯示格式） 、採集成本等方面進行比較分析，為落實《圖書館采訪工作規范》中的「選擇出最適合於本館使用的書目」提供借鑒。
  6. Application of statistics. inspection by counting of the proportion of non conforming items or of the average number of non conforming items per units. general methods for the construction of a sampling plan

    統計學應用.每單位不合格產品比率或不合格產品平均數的比率的計數檢驗.抽樣方案結構的一般方法
  7. This second investigation according to the principle that samples randomly, distributing considering nation and area, with uniform method and standard, same time registers population to 15 years old of above 1062011 people undertake investigating, actual and respondent population 950356 people, respondent rate 89. 49 %, through uniting an input personal computer is analysed, the result makes clear, rate of countrywide hypertensive sicken was 1991 11. 44 %, among them diagnose hypertension is 4. 13 %, critical hypertension 7. 31 %, as comparative as census of before two whole nations, hypertensive sicken rate shows ascendant trend in our country, the person that reckon completely state - owned hypertensive patient needs treatment is person of 9 ten million

    本次調查按照隨機抽樣的原則，並考慮到民族和地區分佈，以統一的方法和標準，同一時間對15歲以上注冊人口1062011人進行調查，實際應答人口950356人，應答率89 . 49 % ，經過統一輸入微機分析，結果表明， 1991年全國高血壓患病率為11 . 44 % ，其中確診高血壓為4 . 13 % ，臨界高血壓7 . 31 % ，與前兩次全國普查對比，高血壓患病率在我國呈上升趨勢，估計全國有高血壓病人須治療者為9千萬人。
  8. Recommended by china disabled persons ' federation, the survey is carried out through delamination, isometry, probability and multistage sampling, 734 nationwide counties ( cities, districts ) and 5980 subdistricts is taken out, almost 2. 6 million people, 2 of the national population, is referred

    中國殘聯介紹，這次殘疾人抽樣調查採用分層、等距、概率比例、多階段抽樣方法，從全國范圍內抽取了734個縣（市、區） 5980個調查小區，設計樣本量近260萬人，佔全國總人口的2 。
  9. The following merits can gain by using the clustering method : a. the sampling quantity can be reduced by using the method to test the segmentation of the large - scale corpus ; b. the testing precision can be improved and the variance of population can be estimated more exactly

    與已有的簡單隨機抽樣方法相比，本文提出的方法在大規模語料庫分詞質量評價時，有如下優點； a通過聚類得到語料庫抽樣樣本分詞正確率的分層知識，進而在檢驗中運用分層抽樣帶來的增益減少檢驗的費用： b
  10. Retaining sampled units for changed probability and the optimum matching ratio in successive sampling survey

    概率發生變化時的連續抽樣及最優匹配比
  11. The method for retaining sampled units in successive sampling survey for changed probability of selection is introduced. for pps sampling design, a model - design unbiased predictor for the total of a variable for the target population is proposed, and the optimum matching ratio for the predictor under the assumption of unchanged population is calculated. for rhc sampling design, the equation that the optimum matching ration satisfies is given

    介紹了連續抽樣中概率發生變化時保留樣本的方法。對于有放回的pps抽樣，在假設的超總體模型之下提出了總體變量總值的模型設計無偏預報量，並計算了總體不變時保留樣本的最優匹配比。對于無放回的rhc抽樣，給出了最優匹配比滿足的方程。
  12. The ratio of sample size to population size

    抽樣規模與人口規模的比率
  13. The higher the sampling rate, the more bits per sample and the more channels means the higher the quality of the digital audio and the higher the storage and bandwidth requirements

    抽樣頻率越高、每個抽樣的比特數越多、聲道越多，數字音頻的質量越高、所要求的存儲和帶寬越高。
  14. Using a multi - stage cluster sampling design, each of the three cities selected 21 secondary schools with a probability proportional to size to participate in the study

    運用多階段集群抽樣方法，各參與城市的所有普通中學，按學校學生人數比例作為學校抽樣機率，每地區抽出21間學校。
  15. Are the sampling size procedures stated in project specifications and testing contracts

    工程規格及測試合約有否說明樣本的抽查比率及方法
  16. As for the three secretaries of departments under the accountability system, their popularity has not changed much over the last month, both in terms of support ratings and support rates

    06三名問責司長的民望，不論是支持度或支持率，對比一個月前，全部變化都在抽樣誤差?圍之內。
  17. Inspection by measurement of the proportion of non conforming items. guidance on the design of a sampling programme

    不合格品比率測量的檢驗.抽樣方案的設計導則
  18. Given the same feature subset, the proposed genetic algorithm utilizes fewer samples and obtains greater accuracy than random sampling. this dissertation mainly contributes to the following two aspects : 1

    同以往的隨機抽樣方法相比，在同樣的特徵子集的情況下，本方法使用的樣本數量更少且預測準確率更高。
  19. Finally, i simulate the performance of ldpc codes with different parameters on the uwb system. we find that the performance of ldpc codes is very good. we believe ldpc codes will become the main channel - coding scheme in the future uwb system

    最後，將ldpc碼應用於ds - uwb系統，並針對不同碼長、碼率、用戶數、抽樣頻率、訓練比特數進行了計算機模擬，證實了ldpc碼具有良好的糾錯性能，必將成為未來超寬帶uwb系統主要的通道編碼方案。
  20. In order to improve the efficiency, we use the sampling points of the sequences to compute the distance of two sequences. the distance of sampling points is used to filter the sequence of the database, so the similarity searching space is reduced and the efficiency of the query is improved

    在保持序列變化模式的前提下，使用抽樣點來計算序列之間的dtw距離，並依據抽樣比率和查詢參數選擇過濾距離對序列數據庫進行過濾，實驗結果表明，抽樣過濾的方法明顯提高了查詢效率。
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