方差函數 的英文怎麼說
中文拼音 [fāngchāhánshǔ]
方差函數
英文
variance function- 方 : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ...
- 差 : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
- 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
- 方差 : dispersion
- 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
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The studies of plane heterogeneity are as follows : the text counts the parameters of the sandlayers " geometric shape of different sedimentous microfacies ; speculates the conditions of lateral communication by sandstone density according to the method brought forward by j. r. l. allen ; gets a group of parameters including the reservoir thickness, porosity and coefficient of permeability by using kriging method according to the data of logging results ; makes certain the direction of coefficient of permeability with variation function by modeling globosity function ; divides the sandlayers into five types by using the method of flowing cell based on three parameters, that is x h, kxh and h / h, and accounts the favorable region. on the base of above - mentioned studies, the text evaluates the heterogeneity of sandlayers and gives the resolutions to these problems to serve the development of the field
Allen )等人提出的統計方法,用垂向上砂體密度的界限來推測砂體側向連通情況;根據每口井的測井解釋資料,利用克里金插值法對外間進行插值,得到了一組反映儲層特徵在平面上變化的參數,包括儲層厚度分佈、孔隙度以及滲透率,並且成圖;利用變差函數法,通過球狀函數模擬,確定儲層優勢滲透率方向:根據流動單元法,以儲能系數、容積系數以及凈毛厚度比三個參數為依據,通過聚類分析方法進行流動單元劃分,並且按照參數特徵將其分為五類,統計各砂層有利流動單元區塊。A experienced equation which is summarized by many experiments is used to determine the number of mesosphere nerve cell and a sort of new square - sum function of errors is adopted. its characteristic is that weight errors of possible exceptional point is less. accordingly, the effect of errors of possible exceptional point is reduced, which make actual function relation simulation easier
本系統針對bp演算法的局限性,給出了一種優化的bp演算法,採用經過大量實驗總結出的經驗公式來確定隱層神經元的個數,並選取了一種新的誤差平方和函數,該函數的特點是對一些可能的異常點的誤差權值設計的較小,從而降低了異常值誤差帶來的影響,便於模擬出真實的函數關系。( 3 ) usevpq. dll : common statistical distribution library provides methods of getting the expectation, variance ^ probability and quantile of 10 kind of statistical distribution
Dll :常用數理統計分佈的工具庫提供了計算十種常用統計分佈的期望、方差、函數值、分位點的方法。In the design of corpus, we carefully analyze the syllable distribution of corpus th - coss, then classify the prosodic characters of this corpus and present out the distribution of every prosodic character. based on prosodic character vector, we construct an error function which is used to select original corpus for simulation system, and show the distribution of prosodic characters for the original corpus. greedy algorithm and corpus self - adaptive process are expatiated to set theoretical foundation for text material search
在語料庫分析與設計方面,首先統計th - coss語料庫中音節分佈情況,給出th - coss語料庫韻律特徵分類,並對每一種韻律特徵進行統計,然後構造了一個基於韻律特徵向量的誤差函數,並採用該誤差函數提取語料組成模擬系統的初始語料庫,分析該庫的韻律特徵分佈,最後闡述了greedy演算法與語料自適應過程,為文本語料的搜索打下理論基礎。According to the statistic characteristic of covariance function, parameter estimation can be given for kernel function
由協方差函數的統計特徵,可給出核函數的參數估計。If the covariance stationary processes are one dimension, for given data, covariance function and spectral density function can be estimated, and there is no need to select kernel function and its parameters
如果協方差平穩隨機過程的狀態是一維的,對給定的樣本點,給出了協方差函數的估計和其對應譜(密度)函數估計,而不必選擇核函數及其參數。For the given sample points, and matrix formed by covariance function with sample points as parameters, when the number of sample points approaches infinite, it is proven that this matrix spectrum will approach the spectral approach theorem for positive - definite kernel of integral equation
對給定的樣本點,由樣本點為變量的協方差函數構成的矩陣,當樣本點個數趨于無窮大時,證明此矩陣譜逼近於積分方程正定核的譜逼近定理。We proof the covariance function of covariance stationary processes is equivalent with mercer kernel function. that is, the covariance function of covariance stationary processes is a mercer kernel function ; in reverse, for a given mercer kernel function, there exists a covariance stationary processes, and the covariance function corresponded to this covariance stationary processes is the given symmetry positive - definite kernel function. it means that the covariance function is equivalent to symmetry positive - definite kernel function
首先建立了協方差平穩過程的協方差函數與積分方程中對稱正定mercer核函數的等價關系,即協方差平穩過程的協方差函數是對稱正定mercer核函數,反過來,對給定的對稱正定核函數,證明了存在協方差平穩過程,使得此協方差平穩過程對應的協方差函數恰好為給定的對稱正定核函數,這說明協方差函數和對稱正定核函數是等價的。This method utilizes the distribution property of image intensity. given the false alarm probability, the threshold for likelihood difference can be determined
該方法利用sar圖像的強度分佈特性,根據虛警率確定相鄰區域之間存在邊界的似然差函數的閾值。In this way, the establishment of the error function and the select of the optimization are important
在此方法中,主要是誤差函數的建立和優化方法的選擇。The paper also studied the structure of lms adaptive filter and the theoretical analysis of astringency by deducing the equal square error of the weigh value in the msn linear filtering
在mse線性濾波中權值的均方誤差函數的推導的基礎上,對lms自適應濾波器的結構和收斂性的理論分析進行了研究。Based on the output - voltage error function, a novel time discrete modulation technique is proposed for matrix converters ( mcs ) and time - discrete difference equations of a mc circuit are derived
摘要針對矩陣變換器調制方式的特點,提出了基於輸出電壓誤差函數分析的矩陣變換器離散調制技術,推導了基於時間離散和差分原理的電路方程。Studies have been made on arithmetic realization of apsd estimate in a high - speed detect system, since the way of calculating cpsd is only a little different from that of calculating apsd
鑒于互功率譜密度估計演算法只需將自功率譜密度估計演算法中的自協方差函數換成互協方差函數,本文僅研究和討論了自功率譜密度估計演算法及其實現。We propose a sar image segmentation method based on the criterion of likelihood difference
提出一種以似然差函數作為相似性衡量林準的sar圖像分割方法。The bending stress and the contact stress of the circular arc gear and involute gear are also analyzed and compared. secondly, according to design and manufacture characteristic of the micro - gear, the direct design method called “ deviation function ” is proposed
第二,根據微型齒輪傳動設計與製造的特點,提出了一種設計微型齒輪輪齒齒廓曲線的方法,即偏差函數法設計齒輪齒廓。To solve the dual integral equations, the jumps of the displacements across the crack surfaces are expanded in a series of jacobi polynomials
為了求解對偶積分方程,將裂紋面上的位移差函數展開為雅可畢多項式的級數形式。At the same time, according to the excellent capability of ip curves, we study fitting and description of objects, determination of invariants of objects, symmetry detection and recognition of objects based on ip curves. in all, the main contributions in the dissertation are as follows : ( 1 ) a method of determining automatically the scale of the multiscale edge detection is proposed based on the variant distance of the variogram function, and a method of segmenting texture images is also presented. the variograin values are taken as stochastic and structural properties of texture images and variant distance is taken as the size of image window
同時,基於隱含多項式曲線良好的物體描述與識別能力,對物體邊界輪廓的擬合、描述、不變量特徵的提取、識別以及物體對稱性檢測作了系統的研究,主要成果及創新之處有: ( 1 )基於變差函數的變程,提出了圖像多尺度邊緣檢測中尺度大小的自動確定方法;將變差函數的變差值作為紋理的統計和結構特徵,依據變程確定窗口大小,給出一種新的紋理圖像的分割方法。Since the effects of turbulent atmosphere is prominent, this thesis concentrates on the effects of the turbulent atmosphere on the laser beam propagation in the atmosphere. the atmosphere refractive index model, especially refractive index fluctuation, power spectrum, phase spatial structure constant are introduced in the following and the specific structure function is achieved
根據大氣折射率模型,以及折射率起伏功率譜密度和相位空間結構常數,得到具體的結構函數;通過長程情況下的馬爾科夫近似,得到了互相關函數,對數振幅和相位協方差函數。And then the stability and the stable error response of the dpll are analyzed. there is an obvious doppler shift frequency offset in the received signal with flight at a high speed, in the dissertation the uniform sampling second - order dpll is used to remove the frequency bias for its excellent high - pass characteristic of the error transfer function
由於高速飛行的遙測目標在接收信號中會出現較大的多普勒頻率分量,而典型均勻采樣二階數字鎖相環dpll ( digitalphase - lockedloop )的誤差函數具有高通特性,所以本文提出一種利用其高通特性來去除多普勒頻率分量的新方法。Using square error function and the barycenter algorithm of light intensity as the merit function of focusing and alignment respectively, the system analyzed the images captured by charge coupled device ( ccd ) in the projection screen to produce feedback signals
該系統運用數字圖像處理技術,以方差函數和光強重心演算法分別作為清晰度調節和三色和色調節的評價函數,分析電荷藕合器件( ccd )採集的局部圖像,產生反饋信號。分享友人