probability distributions 中文意思是什麼

probability distributions 解釋
概率分佈
  • probability : n 1 或有；或然性。2 【哲學】蓋然性〈在 certainly 和 doubt 或 posibility 之間〉。3 【數學】幾率，...
  • distributions : 分銷,分派
  1. Probability distributions are classified as either discrete or continuous.

    概率分佈為離散型和連續型兩種。
  2. Chapter 14, " probability, " shows how to do weighted and unweighted probability distributions with perl

    第14章的「概率」說明了如何用perl來計算加權和不加權的概率分佈。
  3. Compared with the regular rule - based expert system, the bayesian network based es can reason on the incomplete input information using the prior probability distribution ; the topological structure of the network being used to express the qualitative knowledge and the probability distributions of the nodes in the network being used to express the uncertainty of the knowledge, which made the knowledge representation more intuitively and more clearly ; applying the principle of the bayesian chaining rule, bidirectional inference which allow infer from the cause to the effect and from the effect to the cause can be achieved

    與一般基於規則的專家系統相比，貝葉斯網專家系統利用先驗概率分佈，可以使推理在輸入數據不完備的基礎上進行；以網路的拓撲結構表達定性知識，以網路節點的概率分佈表達知識的不確定性，從而使不確定性知識的表達直觀、明確；利用貝葉斯法則的基本原理，可以實現由因到果及由果到因的雙向推理。
  4. It contributes to the deeper comprehesion of these probability distributions, affords more detailed theoretical basis for further studying and simulating satellite mobile channels, ? theoretical analyses and discussions of the models which are often used in the study of the propagating characteristics of satallite mobile channels are given ; meantime, some discussions on the work of model simulations are also given, ? incorrect derivation of the equality between c. loo model and corazza model in some other papers is pointed out. via the conception of received power, we derivate that in the rural environments these two models really have the equal relationship by the way of theoretical derivation and simulatant fittings. therefore, it is able to use corazza model in studying the characteristics of satellite mobile channels in the rural environments and able to avoid the iterant work of modeling, in order to enhance the efficiency and accuracy of research work, ? detailed processes of simulating lutz model by using matlab6. 0 _ simulink4. 0 and the results of comparisions are given

    本文包含有以下的主要內容： ?對衛星移動通信通道傳播特性研究中常用的三個概率分佈給出了詳細的推導過程；以便對這幾個在衛星移動通信通道傳播特性的研究中常用的概率分佈函數有更深的理解，對進一步研究衛星移動通信通道傳播特性和對通道的建模提供了更為詳盡的理論基礎； ?對衛星移動通信通道傳播特性的研究中常用的通道模型進行了理論上的分析和討論，並對衛星移動通信通道建模的研究工作提出了一定的看法； ?指出了以前的文獻中關于c . loo模型和corazza模型的等同性的證明錯誤；並從接收信號功率的角度出發，通過理論推導及模擬曲線擬合重新證明了在鄉村環境下，這兩個模型的確是具有等同性的；從而在對鄉村環境下的衛星移動通信通道傳播特性進行研究時，可以只採用corazza模型來對實際的通道進行建模，這樣可以避免重復的建模工作並提高研究工作的效率和準確性； ?給出了lutz模型在matlab6 . 0 _ simulink4 . 0環境下的軟體模擬實現的詳細過程和整體模擬測試的對比結果，保證了該模型在硬體實現時的可靠性和可行性，從而可以將它們應用於指導模型的硬體模擬實現並可以降低硬體實現時的風險。
  5. Its applications include in the fields of information engineering, electronics industry, theory of controls and economic, etc. for example, we use geometric distribution to describe the life distribution of runs of a species in transect surveys of plant populations and inventory demand distributions. in the theory of reliability, geometric distribution is one of the most important discrete probability distributions because of its loss of memory

    在可靠性理論中，由於幾何分佈的無記憶性，使得其是離散型壽命分佈中最為重要的壽命分佈之一，其相當于指數分佈在連續型壽命分佈中的地位，這正如程侃研究員在文獻[ 5 ]中所指出的「在離散壽命的情形，幾何分佈起著連續情形下指數分佈所起的作用」一樣。
  6. Abstract : in order to provide the reasonable parameters in the reliability analysis of tunnel structure and the criterion in the quality control of tunnel engineering, in this paper, the over - under - excavated values of the real - state outline of tunnel excavation are obtained by the near - field photographic method. by using mathematical statistic method, the figure features and probability distributions of the over - under - excavated values of the surrounding rock, including deferent positions of same cross section, are analyzed

    文摘:採用近景攝影的方法，從隧道開挖毛洞中獲取圍巖超欠挖數據，通過數理統計的方法，分析各類圍巖超欠挖的數字特徵及概率分佈，同時得出各類圍巖超欠挖在隧道斷面不同部位的分佈規律，為隧道結構的可靠度研究提供可靠參數，也為隧道工程質量控制提供基準
  7. Second, the random variables in reliability analysis of the steel rail are discussed. these random variables include the wheel load, the stiffness of the rubber pad and the bed, the temperature stress and the fatigue ultimate strength of the steel rail. and their probability distributions and parameters are discussed thoroughly

    其次，對鋼軌可靠度分析中涉及的隨機變量如輪載力、軌下膠墊剛度、道床路基聯合剛度、溫度應力及鋼軌疲勞極限強度的概率分佈類型和統計特徵進行了詳細討論。
  8. Firstly in this part, computer simulation methodology based on the baecher model for generating network of discrete fractures was presented, which includes the follow details : probability distributions of fracture density, orientation, trace length, size, and aperture and estimation of their statistical parameters ; stochastic models of fracture network ; monte - carlo ' s simulation method ; numerical simulation procedure and technicality. then, boundary element method was used to calculate flow through the generated fractured network. assuming single fracture as a two - dimension inexpressible isotropic porous media, boundary element method equations for flow in single fracture and then in fracture network were derived using the weighted residual method

    給出了離散裂隙網路模型所依據的基本假定；發展了基於baecher模型的離散裂隙網路計算機隨機生成技術：詳細地推導了單裂隙滲流和多裂隙相交網路滲流的邊界單元法公式，發展了離散裂隙網路中穩態滲流的邊界元數值技術，並且討論了相關的具體數值技術細節，如角點的處理方法，單元的自動剖分等：描述了混合邊界元?管流模擬方法及其數值實現；研究了裂隙網路的簡化方法，並針對裂隙網路邊界元法的特點提出了一種改進的分塊三角分解法。
  9. Our normalization is such that the curves in fig. 3 can be regarded as probability distributions

    我們的標準化處理使得圖3中的曲線可以被看作概率分佈曲線。
  10. In regard to the bluetooth combiner, we study the probability distributions between its output and input sequences, with which we analyze its correlation immunity, introduce two representative attack methods and give a whole evaluation on the security of bluetooth combiner

    對藍牙組合生成器，首先考察了其輸入輸出序列的基本性質，在此基礎上，研究了它的相關免疫性，介紹了目前有代表性的兩種攻擊演算法，並對藍牙組合生成器的安全性做了總體評價。
  11. It first shows the building of stochastic, time - dependent network model, the description of k expected shortest paths problem, the demonstration of travel time probability distributions for the arcs in transportation area, and the calculation of expected travel time on path

    本文首先給出了隨機時間依賴網路模型（ stdn模型） 、 k期望最短路徑問題的形式化描述，並針對交通應用領域推導出弧耗費服從的概率密度函數，路徑期望值的計算方法。
  12. Progress, though steady, has been slowly, due largely to difficulties inherent in attempts to characterize a random natural phenomenon in terms of a limited set of parameters. for many years, various non - gaussian probability distributions have been offered as models for the amplitude of sea clutter

    對海雜波的研究迄今已有50多年，但其實驗數據和理論遠不能令人滿意，還不可能對海面回波的電平（作為雷達參數和海面狀態參數的函數）做出高度準確的預測。
  13. The six sigma black belt should be familiar with the commonly used probability distributions, including : hypergeometric, binomial, poisson, normal, exponential, chi - square, student ' s t, and f

    6西格瑪黑帶應熟悉常用的概率分佈，包括超幾何分佈、二項式分佈、泊松分佈、正態分佈、指數分佈、卡方分佈、學者t分佈和f分佈。
  14. Common probability distributions : a compendium which covers numbers of useful distributions for modeling of random data

    常見的機率分佈:此概要包括許多為隨機數據建模所用的分佈。
  15. The six sigma black belt should know factorials, permutations and combinations, and how to use these in commonly used probability distributions

    6西格瑪黑帶應了解析因、置換、合併等方法，以及它們在概率分佈中的一般應用。
  16. Part one : the statistical analysis for geometric distribution the geometric distribution is one of the better known discrete probability distributions and has many useful applications

    第一篇：幾何分佈產品的統計分析幾何分佈是離散型分佈中最重要的分佈之一，它在信息工程、電子工程、控制論及經濟學中有著重要的應用。
  17. Making use of the mathematical statistics analysis, probability distributions and statistical parameters of the sustained and transient quality of residential floor live load is studied. thereby the distributed models and parameters of the sustained live load and the transient live load on residential floor are obtained at design reference period t = 50 years and t = 100 years

    利用數理統計方法，研究了典型住宅結構樓面持久性活荷載和臨時性活荷載的概率分佈和統計參數，建立了設計基準期t = 50年和t = 100年時樓面持久性活荷載和樓面臨時性活荷載的概率分佈模型，並確定了模型參數。
  18. At first, based on the 272 station monthly precipitation in china, the paper described the heterogeneous of the spatial distribution precipitation by use of the curve of lorenz and the coefficient of g. the results show that the heterogeneous of the spatial monthly precipitation in summer is stronger than in winter. based on this describing, the probability distributions function of the spatial distributions are fitted by use of the gamma distribution model, and this general principle is examined. the results show that the gamma distribution is good on describing the heterogeneous of the spatial distribution precipitation in china

    並以分佈擬合中國區域月降水量的空間概率分佈，擬合效果優良，表明描述中國區域月降水量水平空間分佈非均勻性的普適分佈律以分佈的pdf最為適宜；以1 、 4 、 7 、 10月具有代表性的資料為例分析了各季月降水量空間分佈型的主要特徵及其形成原因，並從一個側面表明我國月降水量空間分佈的偏態性正是我國降水氣候的最顯著統計特徵之一，這也與我國大陸性季風氣候特點密切相關；並且月降水量的基尼系數和分佈模式形狀參數值都是夏季大於冬季，說明月降水量的空間分佈非均勻性夏季比冬季弱。
  19. The probability distributions of climatic elements are discussed. based on the characters of them, a multimode model is introduced and verified through the nonlinear fitting. the climate features of quasi - biennial oscillation of the stratospheric zonal wind over equator, the enso index, the surface pressure at reykjavik 21 90w 64 13n and swedish temperature, and the northern hemisphere tree ring all show that the multimode are universal in the climatic system

    對氣候要素的概率分佈進行了討論，根據這些概率分佈的特點提出了多模態模型，並用非線性擬合的方法進行了驗證。對赤道平流層緯向風enso指數esi序列冰島reykjavik 21 . 90w ， 64 . 13n氣壓和瑞典溫度北半球樹木年輪等數據的分析表明：氣候系統中多模態現象具有普遍性。
  20. Analytical solution of space probability distributions of particles in one - dimensional space with fixed boundary conditions

    一維硬邊界條件下粒子位置空間概率分佈的解析解
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