樣本均值 的英文怎麼說

中文拼音 [yàngběnjūnzhí]
樣本均值 英文
sample average
  • 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...
  • 均 : Ⅰ形容詞（均勻） equal; even Ⅱ副詞（都; 全） without exception; all
  • 樣本 : sample book; specimen; advanced copy; sample; muster; scantling; instance; statistics
  • 均值 : [數學] mean value
  1. 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。
  2. 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。
  3. 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。
  4. Empirical likelihood ratio confidence regions for mean under strongly stationary m dependent samples

    相依樣本下均值的經驗似然比置信區間
  5. 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。
  6. In this text, we first do some research on the genetic algorithm about clustering, discuss about the way of coding and the construction of fitness function, analyze the influence that different genetic manipulation do to the effect of cluster algorithm. then analyze and research on the way that select the initial value in the k - means algorithm, we propose a mix clustering algorithm to improve the k - means algorithm by using genetic algorithm. first we use k - learning genetic algorithm to identify the number of the clusters, then use the clustering result of the genetic clustering algorithm as the initial cluster center of k - means clustering. these two steps are finished based on small database which equably sampling from the whole database, now we have known the number of the clusters and initial cluster center, finally we use k - means algorithm to finish the clustering on the whole database. because genetic algorithm search for the best solution by simulating the process of evolution, the most distinct trait of the algorithm is connotative parallelism and the ability to take advantage of the global information, so the algorithm take on strong steadiness, avoid getting into the local

    本文首先對聚類分析的遺傳演算法進行了研究，討論了聚類問題的編碼方式和適應度函數的構造方案與計算方法，分析了不同遺傳操作對聚類演算法的性能和聚類效果的影響意義。然後對k - means演算法中初值的選取方法進行了分析和研究，提出了一種基於遺傳演算法的k - means聚類改進（混合聚類演算法） ，在基於均勻采樣的小樣本集上用k值學習遺傳演算法確定聚類數k ，用遺傳聚類演算法的聚類結果作為k - means聚類的初始聚類中心，最後在已知初始聚類數和初始聚類中心的情況下用k - means演算法對完整數據集進行聚類。由於遺傳演算法是一種通過模擬自然進化過程搜索最優解的方法，其顯著特點是隱含并行性和對全局信息的有效利用的能力，所以新的改進演算法具有較強的穩健性，可避免陷入局部最優，大大提高聚類效果。
  7. Levels of the five most recent samples taken from that beach. because most gazetted beaches are sampled three times per month or more, a beach grading score provides a good snapshot of beach water quality over the current month

    個別泳灘的等級是根據最近5次抽取水樣本的大腸桿菌幾何平均值而評定，由於大部份憲報公布泳灘每月均會抽取樣本三次或以上，公眾只需參考泳灘的等級，便可大概了解該月的水質狀況。
  8. The specific research methods include : the reliability and validity of the scale ( cronbach ’ s of the scale, split - half reliability, the reliability of each dimension, discriminant validity, convergent validity ) ; the factor analysis method to get the dimensions of internal service quality ; the independent - samples t - test and paired - samples t - test method to analyze every discrimination of internal service quality ; the comparison of means to evaluate the sequence of every dimension

    具體的研究方法包括:對量表進行信度和效度分析，包括整個表的cronbach系數、分半信度、各維度的信度、區別效度和收斂效度的分析;使用因子分析的方法測量內部服務質量包含的維度;採用兩獨立樣本的t檢驗和兩配對樣本的t檢驗的統計方法對內部服務質量各差距進行分析;通過對樣本均值的比較，分別得出各維度在員工和管理者心目中的重要性排序。
  9. 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。
  10. Through the theory of light radiation and intensity, we can use the fewest leds to satisfy the luminous intensity demand. through image segmentation theory, we can accurately pick module up from the test stripe when it is put in wrong directions. through image processing theory, we can acquire correct information and avoid the bad effects from the asymmetric chemistry reaction and instability of the devices

    用光的輻射和強度理論，我們計算出了獲得足夠圖像強度所需的最少光源;用圖像分割理論，我們在試紙條傾斜放置或有垂直方向上的偏移時，準確地提取出了各模塊的數據;用平滑濾波和均值濾波理論，我們濾除了由於反應不均勻及硬體設備不穩定帶來的噪聲;用交遇區設計線性分類器的方法，我們降低了有限樣本設計線性分類器帶來的誤差，提高了檢驗準確度。
  11. The most direct embodiment is the fluctuant images of grain - size parameters brought about by the bounce of grain - size eigenvalues. in order to discuss dune sedimentary and the cause of its evolvement, in this paper we also contrast every oxygen isotope phase

    為進一步探討砂丘沉積及其演變的原因，本文還將米浪溝灣地層剖面150ka以來不同時段樣品的mz和sc d的平均值與相同時期氧同位素諸階段進行了對比。
  12. In views of hebei province ' s existing situation of rural economy, and with reference to the civil and abroad achievements in scientific research on the field, this thesis choose two sample groups - 11 cities and 138 counties of hebei province in light of division into districts and analyses the rural economy difference of hebei by using total and mean index, the social product gross of rural, rural labor productivity, the mean net income of rural, and methods of variation coefficient, comprehensive index and so on.

    針對河北省農村經濟發展的現狀，本文借鑒國內外區域經濟差異的有關研究成果，以現行行政區域為基礎，通過截取河北省11個地市和138個縣（市）兩組不同的樣本，選取總量指標農村社會總產值，人均指標農村人均社會總產值、農村勞動生產率、農民人均純收入，運用變異系數、綜合指數等方法對河北省農村經濟的差異進行分析。
  13. From 1992 to 2000, while the elasticity of the country ' s administrative expenditure and of the sampled provinces is larger than 1 in 6 years, the elasticity of the nonprofit institution maintenance expenditure is larger than 1 in 2 years of the whole country, and in 4 years of the sampled provinces ; ( 5 ) the local fiscal expenditure structures are differentiated among the different regions, with the characteristic of the different local fiscal expenditure quotas per capita ; ( 6 ) the supply mechanism of the local finances is out of performance, and the resource allocation function of the local finances is obscure, with the functional scope and expenditure responsibility not adapted to the market economy ; ( 7 ) the problems of local public finance sustaining agriculture investment are as follows : first, the gross of the fund that local public finance sustaining agriculture is shortage

    1992 ? 2000年，全國地方財政行政管理費（含公檢法支出）支出彈性， 9年的數值有6年在1以上；樣本省區9年的平均數值有6年在1以上。全國地方財政各類事業費支出彈性， 9年的數值僅有2年在1以上；樣本省區9年的平均數值有4年在1以上。 （ 5 ）不同地區財政支出結構差異大，主要表現在地方財政支出水平在不5 、論文針對實現地方對政支出結構持續優化的預期目標的需要，系統地研究提出了適宜的政策措施『所提出的政策措施主要是: （ 1 ）轉換政府職能，調整地方財政使用方向。
  14. In connection with the difference and distribution characteristic of the samples in sample space rs based on dga, a new self - adapted weight fuzzy omean clustering model of fault diagnosis of the power transformer based on the potential function is proposed. meanwhile, from the aspect of geometry characteristic of fc - divided in s dimension sample space, a method is proposed for the purpose of getting an effective adjacent radius, adaptive cluster number c and original cluster center of x sample set. for the diagnosis sample x, the property measure and diagnosis rule are proposed, which under the condition of potential density function that determine c number of optimal fuzzy cluster p1

    根據以變壓器dga數據為特徵量的樣本空間各樣本差異特性以及樣本在空間r ~ s的分佈特性，首次提出了基於勢函數自適應加權的變壓器絕緣故障診斷的模糊c -均值聚類模型；同時，從s維樣本空間的f ~ c -劃分幾何特性出發，提出了一種求取樣本集的類勢有效鄰域半徑和自適應求取聚類數和聚類中心初值的方法；對一個待診斷樣本，設計了基於類勢密度函數意義下的屬性測度和診斷準則。
  15. The adaptation processing includes linear prediction coefficient adaptation and adaptation of quantization step size for residual signals. based on g. 726, we adopt a huffman coder to make use of probability statistic of bit cascade covering n ( n 1 ) samples generated from adpcm, in order to further reduce the bit rate. ng is lossless entropy coding, the speech quality of our improved algorithm should be same as that of g. 726 standard

    我們的研究和改進工作包括:研究最優非均勻自適應量化器，及其自適應演算法;研究波形預測函數，以及函數零點、極點的自適應演算法;基於每n （ n 1 ）個樣本所對應符號的概率統計，對預測殘差量化值再進行huffman編碼，進一步降低比特率。
  16. Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules

    同時，本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究，包括： cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構；對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制，保證加工工件表面的精度和光順性；設計具有「前瞻」功能的自動升降速控制方法，保證加工過程的平穩性；通過脈沖均勻化，有效地解決加工過程中因為脈沖不均勻而引起的震動問題。
  17. This algorithm laid the foundations of other sampling inference algorithms, such as importance sampling algorithm and like - hood weight sampling algorithm. in this paper, the description of accurate and complexities of some kinds of sampling algorithms are presented on the basis of introduction to basic concepts of bayesian networks. first, the mathematical foundations of them are given here in view of statistics

    本文首先介紹了bayesian網的一般概念及推理任務，並主要著眼于bayesian網推理演算法的數學原理，提出了樣本平均值演算法，對幾種推理演算法從數學角度做出本質性的刻畫，給出各自的復雜度和精確度的理論分析，證明了他們在各種情況下的推理效率。
  18. Furthermore, multi - investments can resolve the most part of nonsystematic risk. in chapter 4, the thesis estimated the value of by means of time series regression firstly. secondly, we used ways of equilibrium analysis to test the risk - return relation of shanghai a - share

    在第4章，本文先通過時間序列回歸估計了樣本股票的值，然後以上證綜合指數作為市場組合分期進行橫截面檢驗來考察上證a股的風險-收益關系，本章採用了均衡分析方法。
  19. Additionally, the optimum structure and parameters of the support vector machine can easily be determined by the learning process, however the neural networks can not. an information gain of signature signals is introduced to assess the contribution of the signature signals to diagnosing faults in rotating machines

    同時發現，存在一個最佳訓練樣本比例值，在該比例值上，不同核函數支持向量機的故障診斷錯誤率均趨于穩定，也就是說這個比例值確定了在保證故障診斷準確率的條件下，所需要的最少訓練樣本數。
  20. Then the simulation tests on drum excess water and lack of water were practiced ; the results indicate that : if the network parameters are selected correctly ， the training samples can be convergent to a relative small and stable value with a small learning error. some comparisons can be made through sample training under the circumstance of me and the hme, after adopting hme with the tree - style structure, two layers of the gate network can enhance the control of the algorithm system. as a result the precision and stability is improved

    其實驗結果表明：只要合理選取網路參數，本文所編輯的樣本均能收斂於一個較小的穩定值，訓練誤差也較小，並且通過分層與不分層混合專家網路的樣本訓練結果比較可知，採用這個具有樹結構型式的分層混合專家網路，由於其中兩層門網路對系統的控製作用加強，因此樣本訓練的精度與穩定性有所提高。
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