概似函數 的英文怎麼說

中文拼音 [gàisìhánshǔ]
概似函數 英文
likelihood function
  • 概 : Ⅰ名詞1 （大略） general outline 2 （神氣） manner of carrying and conducting oneself; deportment ...
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. And the resemblance is pointed out between continuous wavelet transform ( cwt ) and waf. in the course of computing waf, the scaling replica is very important. based on the properties of cwt, three approaches have been proposed for the scaling of a wavelet that has no analytic form

    詳細闡述了寬帶信號及系統的三個條件、寬帶系統的回波模型和寬帶模糊度函數的概念，指出了連續小波變換（ cwt ）與寬帶模糊度函數的驚人相似之處。
  2. The d - s rule of the information fusion of rockmass mechanical parameters is presented. meanwhile, the basic probability assignments, belief functions, plausibility functions, and similar probability functions are given. this method is applied to an example of analysis and selection for rockmass mechanical parameters of the rock engineering, and the satisfactory results are obtained

    構造了巖體力學參數的識別框架，建立了巖體力學參數的基本可信度分配的應用模型，定義了巖體力學參數的信度函數、似真度函數、以及類概率函數，提出了巖體力學參數的d - s信息融合法則，明確了巖體力學參數d - s信息融合方武漢理工大學博士學位論文法的實施步驟。
  3. The probability distribution function and the characteristic values of the curvature ductility factor are obtained

    近似得出曲率延性系數的概率分佈函數和特徵值。
  4. The main contributions of this dissertation are listed as the followings : l ) deducing and proving the " three in one " theory of natural monopoly, that is, from the angles of economies of scale, economies of scope and economies of network, giving an explanation of natural monopoly ; 2 ) putting forward the concept of " strict superadditivity " and proving that total value function and total revenue function of network economy have strict superadditivity ; 3 ) summarizing the emerging characteristics in the market definition of natural monopoly, that is, in the monopoly industry, " market " tends to be more and more smaller than " industry " ; 4 ) expounding that the objective patterns of regulatory reforms of the railway industry in china are explicit regulation with partly characteristics of implicit regulation ; 5 ) proving the idea that the structural reforms of the railway industry in china should be hierarchical ; 6 ) demonstrating the theoretical bases for whether infrastructure management should be separated from transpo rt operation ; 7 ) expounding and proving that the interior of the railway industry in china should implement the differential property rights reform pattern

    本文的研究特點在於： （ 1 ）在規模經濟、范圍經濟的基礎上進一步推導並證明了網路經濟與自然壟斷的關系，即自然壟斷可以從規模經濟、范圍經濟、網路經濟三個角度來解釋論述； （ 2 ）明確提出了一個與鮑莫爾、潘澤與威利格等人提出的「成本劣加性」相類似的概念? ?價值優加性，並證明了網路經濟的總價值函數和總收益函數具有嚴格優加性； （ 3 ）概括了自然壟斷市場界定中所出現的新特徵，即在壟斷產業中， 「市場」正越來越小於「產業」 ； （ 4 ）進一步論證了中國鐵路產業規制創新的目標模式是兼有部分內生規制特點的外生規制； （ 5 ）在中國鐵路產業的結構改革中應體現分層次的思想； （ 6 ）明確論述了內容提要鐵路路網公司等自然壟斷環節是否分割的理論基礎; （ 7 ）提出並進一步證明了中國鐵路產業內部應實行差異化的產權改革模式。
  5. Log likelihood function

    對數概似函數
  6. It is proved that as the number of insured tends to infinity the average prospective loss random variable of this portfolio tends in probability to a certain random variable of which the approximate distribution function is derived

    證明了當保單數趨于無窮多時，平均損失變量按概率收斂于某一個隨機變量，推導得到了該隨機變量的近似分佈函數。
  7. Based on the study of strength degradation of material in the fatigue process, a strength degradation model is proposed. a stochastic differential equation, which controls strength degradation, is obtained from the model randomized by markov process. by using the theory of stochastic, the distributions of residual strength at any given lifetime and lifetime of any given residual strength are attained. under a few suitable hypotheses, inverse gaussian distribution of fatigue life is derived, and verified by means of experimental data. the result shows that the model and the method are reasonable

    在研究疲勞過程中材料強度退化規律的基礎上，建立了一個強度退化模型.對其進行隨機化處理，得到控制強度退化過程的隨機微分方程.在一定假設條件下，獲得了剩餘強度概率密度函數的封閉解，並推導出疲勞壽命的反高斯分佈形式.給出一種考慮損傷狀態對隨機漲落影響的近似處理方法.與試驗數據的比較結果表明，本文的模型和方法是合理的
  8. Using the theories of probability, algebra and number theory comprehensively, we investigate a class of boolean functions with three - valued walsh spectrum in the first part of this dissertation : the properties of the extended semi - bent functions, which are constructed from any two bent functions, are studied, followed by the structure characteristics of the boolean functions satisfying propagation criterion with respect to all but two vectors ; the definition and cryptographic properties of k - order quasi - bent functions are proposed whose walsh spectrum takes on only three values. some sufficient and necessary conditions are offered to decide whether a boolean function is a k - order quasi - bent function ; a special method is presented to construct the k - order quasi - bent functions, whose cryptographic properties are explored by the matrix method, which is different from the method of walsh spectrum and that of autocorrelation of boolean functions ; the application of this kind of boolean functions in the fields of stream cipher, communications and block ciphers is discussed, which shows the great importance of the fc - order quasi - bent functions ; some methodology are proposed to construct the k - order quasi - bent functions, including the complete construction by using the characteristic matrices of boolean functions, and the recursive method by two known k - order quasi - bent functions we further extend our investigation to the ring zp, where p is a prime, and the similar results are presented as far as the p - valued quasi - generalized - bent functions are considered

    本文首先綜合運用概率論、代數學、數論等基礎學科的理論知識，並以頻譜理論作為主要研究工具，對一類譜值分佈相對均勻的函數? ?廣半bent函數、 k階擬bent函數和p值k階擬廣義bent函數進行了系統、深入的研究，給出了廣半bent函數定義，並探討了廣半bent函數的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的定義及等價判別條件；討論了k階擬bent函數和p值k階擬廣義bent函數與部分bent函數和p值廣義部分bent函數的關系，探討了它們的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的典型構造方法，並將對k階擬bent函數的密碼性質的研究轉化到對一類特殊的矩陣的研究上；利用布爾函數的特徵矩陣原則上給出了k階擬bent函數的一種完全構造方法，還給出了從已有的p值k階擬廣義bent函數出發，遞歸構造變元個數更多的p值k階擬廣義bent函數的方法；初步探討了k階擬bent函數在序列密碼、分組密碼以及通信中的應用；給出了一類布爾函數walsh譜的分解式，並利用這類布爾函數的walsh譜分解式給出了一類近似穩定的布爾函數的構造，特殊情形下為k階擬bent函數；利用代數數論的知識考察了p值k階擬廣義bent函數的譜特徵，並給出了k階擬廣義bent函數與所有仿射函數的符合率特徵等等。
  9. Secondly, we numerically simulate the turbulence behavior of one - dimension fpu model and obtain probability density functions of the velocity differences in different conditions. we use tsallis statistics to fit the probability density functions and find out it was fitted very well

    其次，我們對一維fpu模型中類似湍流行為進行了數值模擬，得到不同條件下速度差的概率密度函數，並利用tsallis統計對其進行擬合，發現兩者符合得非常好。
  10. In this paper, we discuss a kind of filter generator whose filter functions have less input bits than the degree of the linear feedback shift register ( lfsr ). by analyzing the structure of the filter generator and its equivalent system, we give out a conditional search algorithm ( csa ) to attack this kind of filter generators

    針對濾波函數f （ x ）的輸入比特數m少於線性反饋移位寄存器級數n的濾波生成器，本文通過分析其等價的組合生成器的結構，以及不同節拍上驅動序列的各個符號之間的制約關系，給出了廣義解序列的概念，並提出了類似遍歷二叉樹的條件搜索演算法csa ，用於攻擊該類特殊的濾波序列。
  11. Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research

    接著，建立了和研究了二維二速的主幹道模型，該模型模擬了城市交通中一條主幹道，多條支道的交通情況，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中可以有對突發事件發生反應的剎車，在發生堵塞時，路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生，給出了車輛演化的演化方程，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。最後，在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下，將此法推廣到對二維bml模型的模擬上，得到了與用以往方法的研究結果相類似的速度-密度圖線，且車輛從運動相到堵塞相轉變的上下臨界密度是一致的，同時分別給出車輛在處于暢通相和堵塞相時， boltzmann函數在格子上的分佈情況，進一步驗證了此法的可行性。
  12. 2 ) tansformed the real part and imaginary part of interferogram to stationary wavelet domain, analyzed the pdf of signal and noise wavelet coefficients using pearson distribution system, then evaluated the wavelet coefficients of signal in stationary wavelet domain by maximum a posterior ( map ) criteria to reconstruct the interferogram

    2 ）將干涉圖的實部和虛部分解到靜態小波域，用pearson分佈系作近似，分析了信號和噪聲小波系數的概率密度函數，在靜態小波域用map準則估計信號的小波系數用於干涉圖的重建。
  13. In chapter two, we consider the non - ruin probability. in section one. by adapting the techniques in [ 5 ], we obtain the integral expression of non - ruin probability in section two, firstly, we prove the twice continuous differentiability of non - ruin probability, then we obtain the integral - differential equation satisfied by ( u ) in section three, we introduce the auxiliary function e ( u ). as u = 0, gives 0

    類似於[ 5 ]中的方法得到不破產概率滿足的積分表達式在第二節中，首先證明了不破產概率的二次連續可微性，然後得到不破產概率滿足的積分-微分方程由於不破產概率零初值時的值不確定，我們在第三節中引入了輔助函數e _ （ u ） ，使得u 0時， e _ （ 0 ） 0 。
  14. Dually we can also obtain the relationship among plausibility function, outer measure and upper probability

    似然函數與外測度及上概率之間的關系可對偶得到。
  15. How to use dempster - shafer ( d - s ) method to solve multi - sensor data fusion problems is analyzed in this paper. based on basic probability assignment of target type decided by multiple sensors, new sensor data are added continually, and believe function and plausibility function are update ; finally the destination of decision of target type is arrived

    應用證據理論（ d - s方法） ，解在多傳感器條件下的數據融合問題，具體方法是根據多個傳感器對目標類型判斷的基本概率分配函數，不斷添加新的傳感器數據，更新信任函數和似然函數，最終判斷目標類型。
  16. Recently it has also been applied to rf ( ratio frequency ) fields, and valuable achievements have been reached. ‘ fractal ’ has space filling ability and self - similarity ability. ‘ fractal ’ is a recursively generated structure by iterated function systems. it has a fractional dimension and possesses a self - similarity property. the concept of a ‘ fractal ’ has been applied to antenna design in order to reduce the size of antenna and obtain multi - band frequency operation

    分形具有空間填充能力和自相似性，分形是通過迭代函數系統產生的具有自相似性的分數維結構，分形的概念可用於天線設計以實現天線的尺寸減縮和多頻特性，這在軍用和民用方面都有著非常廣泛的應用前景。
  17. Abstract : based on the study of strength degradation of material in the fatigue process, a strength degradation model is proposed. a stochastic differential equation, which controls strength degradation, is obtained from the model randomized by markov process. by using the theory of stochastic, the distributions of residual strength at any given lifetime and lifetime of any given residual strength are attained. under a few suitable hypotheses, inverse gaussian distribution of fatigue life is derived, and verified by means of experimental data. the result shows that the model and the method are reasonable

    文摘:在研究疲勞過程中材料強度退化規律的基礎上，建立了一個強度退化模型.對其進行隨機化處理，得到控制強度退化過程的隨機微分方程.在一定假設條件下，獲得了剩餘強度概率密度函數的封閉解，並推導出疲勞壽命的反高斯分佈形式.給出一種考慮損傷狀態對隨機漲落影響的近似處理方法.與試驗數據的比較結果表明，本文的模型和方法是合理的
  18. Recently single - threshold or multi - threshold is often used to segment image and detect object contour on an image by means of genetic algorithm

    本文首先對傳統遺傳演算法進行了改進，提出了適應函數標定公式，定義了相似度概念。
  19. This method takes advantage of the lower approximation in rough sets to do the first data packing, and then, according to the value - taking probability of the attribute value, finds the result to do the second packing, thus accomplishes the completion of incomplete information system

    該方法利用粗糙集中下近似集的性質進行初次數據填補，然後根據屬性數據的取值概率函數求出的結果進行二次填補，從而完成對不完備信息系統的完備化處理。
  20. Finally, the system updates adaptive tracking model by means of all kinds of situation, they are new moving objects, moving objects disappearing and pause

    在特徵匹配時，充分發揮了特徵值的作用，提出了相似函數的概念。
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