maximum-likelihood maximum likelihood 中文意思是什麼

maximum-likelihood maximum likelihood 解釋
極大似然
  • maximum : n （pl maximums ma ） 極點，最大，最高，最高額，最大值；最高點；最大限度；【數學】極大（值）（opp...
  • likelihood : n. 1. 可能（性）。2. 【數、統】似然，似真。3. 〈古語〉希望，前途。
  1. The main contributions are as follows : ( 1 ) de ( differential evolution ) algorithm is proposed to invert the ocean acoustic parameters in shallow water in order to get faster and more accurate results than ga ( genetic algorithm ) and sa ( simulated annealing algorithm ). also a posteriori probability analysis method is applied to evaluate the uncertainty of inversion results. ( 2 ) maximum likelihood objective functions for broadband mfi are derived according to different conditions

    （ 2 ）根據不同的前提條件，採用似然比的方法推導了寬帶匹配場反演的最大似然目標函數；深入地研究了寬帶匹配場處理中的相干與非相干問題；在分析參數反演的敏感性之後，提出了淺海環境參數寬帶匹配場反演的多步優化策略，並與全參數反演方法進行了性能上的模擬比較。
  2. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  3. Before using phase - only algorithm to achieve nulling, estimations of the number of interferential sources and the doa of interferential signals are needed. so, the spatial spectrum estimation basd on the maximum likelihood method ( capon method ) and music algorithm used for detecting the number of interferential sources and the doa of interferential signals are discussed in the second chapter

    在採用phase - only演算法進行波束置零之前，需要估計干擾源的方向和個數，因此本文還在第二章介紹了發射數字波束形成中用於測定干擾源個數和方向的空間譜估計法? capon演算法和music演算法的測向原理，並分析了它們的性能和優缺點。
  4. The second goal is the estimation method of maximum likelihood.

    第二個目標是最大似然的估計方法。
  5. To estimate the td - gtd model parameters, maximum likelihood estimation ( mle ) algorithm is developed

    對td - gtd模型參量的最大似然估計（ mle ）演算法進行了推導。
  6. Though maximum likelihood detection ( mld ) can obtain optimum detection performance in mimo communication systems, the ergodic search increases the complexity exponentially with the number of the antennas, which lead to implemental difficulty

    在mimo通信系統信號檢測中，最大似然檢測（ mld ）可以獲得最佳的誤碼性能，然而遍歷式搜索方式使得mld的計算復雜度隨天線數呈指數形式遞增，在實際系統中，往往難以實時實現或者不能實現。
  7. There are three frequently used method : distance method, maximum parsimony method, and maximum likelihood method

    目前常用的構建發生樹的方法有三種，即距離法、最大簡約法和最大似然法。
  8. Multi - texture maximum likelihood estimation of polarimetric sar image

    圖像的多紋理最大似然估計
  9. Aligned with cytochrome b sequences from 29 siluriforms in japan, korea, russia, africa, north america and south america retrieved from genbank, and selected astyanax mexicanus, phenacogrammus interruptus, cyprinus carpio and oncorhynchus mykiss as outgroups, which are belonging to characiformes, cypriniformes and salmoniformes, respectively. we constructed a matrix of 65 dma sequences. the kimura ' s two - parameter distances were calculated and molecular phylogenetic trees were constructed by using the maximum parsimony ( mp ), maximum likelihood ( ml ) and neighbor - joining ( nj ) methods

    所得序列與從genbank下載的分佈於非洲、北美洲和南美洲等地的鯰形目魚類同一基因序列進行排序，並選用脂鯉目（ characiformes ）的墨西哥麗脂鯉（ astyanaxmexicanus ） 、斷線脂鯉（ phenacogrammusinterruptus ） ，鯉形目（ cypriniformes ）的鯉（ cyprinuscarpio ）以及鮭形目（ salmoniformes ）大麻哈魚屬的oncorhynchusmykiss作外類群。
  10. Recently, when a. dmitrienko ( 2000 ) [ 5 ] constructed the sequential confidence regions for maximum likelihood estimates, they put forward a new asymptotic property : bounded cost of ignorance, that is lim ( en ( d ) - n ( d ) ) <. it ' s an asymptotic property which is worthy of consideration

    最近， a . dmitrienko （ 2000 ）在構造極大似然估計的序貫置信區域時，提出了一個新的漸近性質：未知代價的有界性（ boundedcostofignorance ） ，即這是一個很值得考慮的漸近性質。
  11. The viterbi decoding algorithm, proposed in 1967 by viterbi, and it ’ s proved that viterbi decoding algorithm is the maximum likelihood decoder algorithm of convolution code and it has excellent decode performance

    Viterbi譯碼演算法在1967年由viterbi提出，經證明它是卷積碼譯碼得最大似然譯碼演算法，具有優異的譯碼性能。
  12. Viterbi algorithm is a kind of maximum likelihood decoding method, which can obtain high decoding speed and cost fixed decoding time, so it is widely used in deep space communication

    維特比譯碼演算法是一種最大似然譯碼，它可以得到較高的譯碼速度以及譯碼計算時間固定，因而在深空通信中得到廣泛應用。
  13. By complementing the proposed scheme with methods to estimate the fractional code delay, the acquisition unit an provide high quality delay estimates such that it can instead of the delay locked loop in the traditional ds receiver. after dispreading successfully, this dissertation introduces a method to estimate the doppler - shift directly from some samples based maximum likelihood estimation, and then revise it forwardly

    在成功解擴之後，本文利用最大似然估計從l個樣點中直接估計出殘余多普勒頻偏，並進行前向頻偏校正，來代替傳統擴頻接收機中的科斯塔斯環，經模擬證明該方法的估計精度完全滿足解調的要求。
  14. Phylogeny analysis is performed with phylip software package and encoding sequence of bdnf gene. the phylogeny trees have been drawn with three different methods ( maximum parsimony method, genetic distance method and maximum likelihood method ), respectively. the analysis outcomes are not all consistent for the reason that it is closely related to the selected methods and the conservative level of the sequences

    採用不同的統計學分析方法，最大簡約法（ maximumparsimonymethod ） 、最大似然法（ maximumlikelihoodmethod ）和遺傳距離法（ geneticdistancemethod ） ，得到了物種系統發育進化樹，但拓撲結構並不完全一致，這是可能是因為分子系統學研究與採用的分析方法和所選基因的保守程度即作為分子標記的可信度密切相關。
  15. 18 dempster a, laird n, rubin d. maximum likelihood from incomplete data via the em algorithm

    進一步，數據降維的結果可通過與兩個空間相關度量的最大似然解得到。
  16. Secondly, it was. made theoretical analyses about the optimal training sequence design by the maximum likelihood estimation method and obtained the corresponding results, which were compared with the separate results derived by the minimum mean square error ( mmse ) estimation method in the other literature. at last, it was analyzed the impac

    其次進行了採用最大似然（ ml ）估計法的最佳訓練序列設計的理論分析，分別得到了有關結果，並和其他文獻中採用最小均方誤差（ mmse ）估計法的設計結果進行了分析比較，得到了有關結論。
  17. In this paper, we emphasis on the distributed mimo zero forcing detection, maximum likelihood detection and minimum mean square error detection. the simulation results are presented to compare the proposed distributed mimo detection algorithms

    本文重點闡述了分佈mimo的迫零檢測演算法、最大似然檢測演算法和最小均方誤差檢測演算法，並通過模擬比較了這三種分佈mimo檢測演算法的性能。
  18. Then, with the concept of accumulated failure probability, the proposed approach combines the least ? quares method with bayes " theorem, takes advantage of the parameter estimation for single weibull distribution to each derived subgroup data set, and estimates the parameters of each subpopulation. the estimates given by this paper also satisfy the maximum likelihood equation. the mean time to failure and the reliability estimation of the mixed population are given

    然後通過利用累積失效概率等概念，對每個導出的子組數據集聯合運用最小二乘法、貝葉斯定理和對單一威布爾分佈的參數估計法，從而得到每個子總體的滿足極大似然原理的參數估計，給出了該混合總體平均壽命和可靠度的估計。
  19. While the method in this paper is based on maximum likelihood criterion, which ensures accuracy of signal receiving

    而本文的方法是基於最大似然準則的，確保信號接收準確。
  20. This thesis also focuses on the way of modeling and evaluating the language model for lvsr and introduces detailed the linear and kneser - ney smoothing techniques and the strategy to estimate the discounting parameters using maximum - likelihood criterion

    同時本文還就大詞匯表語音識別系統的語言模型的構建以及評估問題進行深入探討，詳細介紹了線性平滑和kneser - ney平滑技術，並用最大似然估計的方法獲得其平滑參數。
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