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- In chapter 3, we use EM algorithm to estimate parameters in Weibull distribution and Lognormal distribution by grouped data and the simulation shows this method is available. 第三章將利用EM算法對基于分組數據的威布爾分布和對數正態(tài)分布進(jìn)行參數估計，并進(jìn)行模擬表明此方法的可行性與有效性。
- The LOGNORMDIST() function returns the cumulative lognormal distribution. 函數返回累積對數正態(tài)分布。
- The lognormal distribution is widely used in geology to characterize sediment size variations and geochemical element concetrations. 在地質(zhì)學(xué)中，對數正態(tài)分布已被廣泛用以表示沉積粒度變化特征和地球化學(xué)元素濃集情況。
- The principle part of such kind of basic De Wijs modeling data is authentically of lognormal distribution. 基本的De Wijs模擬結果主要服從對數正態(tài)(lognormal distribution)分布。
- The distribution of returns over periods of, say, one year would be better approximated by a lognormal distribution. 以一段期間，比方說(shuō)，以一年為期間的回報率的分布將更近似對數正態(tài)分布。
- Furthermore, Willingness to Pay surveys in Huizhou has verified the lognormal distribution assumption of VOT. 惠州市區意愿支付調查驗證了假設時(shí)間價(jià)值為對數正態(tài)分布的可行性。
- The WR is close to the lognormal distribution, while the WDR is close to the normal distribution. 2個(gè)年份的需水量符合對數正態(tài)分布，而缺水率呈正態(tài)分布；
- SUBJECT TERMS Lognormal distribution,Normal distribution,+ Environment factor,Point estimation,Interval estimation. 王炳興，男，1965年12月生，碩士，副教授，(310035)杭州商學(xué)院數學(xué)教研室。
- The lognormal distribution, like the normal, is completely specified by its mean and standard deviation. 對數正態(tài)分布，如同正態(tài)，以其平均值和標準差被完全地指明。
- The peak currents for metastable pits also follow lognormal distribution and rise with potential. 亞穩蝕孔的峰值電流在恒電位下也服從對數正態(tài)分布且隨電位升高而增大。
- The lognormal distribution is widely used in geology to characterize sediment size variations and geochemical element concentrations. 在地質(zhì)學(xué)中,對數正態(tài)分布已被廣泛用以表示沉積粒度變化特征和地球化學(xué)元素濃集情況。
- The B-S model hypothesis bond obeys the lognormal distribution, it have some flaws when using it to price the rate derivatives bonds. B-S模型假定債券服從對數正態(tài)分布，利用它來(lái)對利率衍生產(chǎn)品定價(jià)時(shí)有一些缺陷。
- The traditional threshold methods are necessary for variables to conform to normal or lognormal distribution, and they have theoretic limitation. 傳統計算地球化學(xué)異常下限的方法，要求數據服從正態(tài)分布或對數正態(tài)分布，而且存在計算依據不充分的問(wèn)題。
- The vertical and the horizontal coefficient of consolidation can be adequately modeled by either a lognormal distribution or a gamma distribution. 固結系數的概率分布一般為對數正態(tài)分布或伽瑪分布。
- Besides the common frequency chart.Lorenz curve, and Theil index. the famous Pareto distribution and the lognormal distribution are the authentic proof methods as well. 實(shí)證方法除了常見(jiàn)的頻數圖、洛倫茲曲線(xiàn)和泰爾指數外，還有著(zhù)名的帕雷托分布和對數正態(tài)分布。
- On the assumption that investment funds follow lognormal distribution,the reinsurance pricing question affected by investment gains is discussed from the reinsurers' angle. 從再保險人的立場(chǎng)出發(fā);在投資基金服從對數正態(tài)分布的假定下;討論了在投資收益影響下的再保險保費定價(jià)問(wèn)題.
- Value of drivers’ commuting travel time has a lognormal distribution of which parameters are 2.73 and 1.09 by using the average of 150 simulation results. 采用150次仿真結果的平均值作為私家車(chē)通勤出行時(shí)間價(jià)值分布函數的參數估計值，得到該分布函數服從參數為2.;73和1
- Besides the common frequency chart, Lorenz curve, and Theil index, the famous Pareto distribution and the lognormal distribution are the authentic proof methods as well. 實(shí)證方法除了常見(jiàn)的頻數圖、洛倫茲曲線(xiàn)和泰爾指數外,還有著(zhù)名的帕雷托分布和對數正態(tài)分布。
- In order to circumvent the heavy-tailed problem in estimating the conditional autoregressive range model (CARR), the lognormal distribution is considered. 摘要為了解決在估計條件自回歸極差模型(CARR)中的分布厚尾性問(wèn)題，采用尾部呈冪函數衰減的對數正態(tài)分布估計CARR模型。
- Under the assumption that a geometric process at the start point follows a lognormal distribution, the statistical inference problem for the geometric process is studied. 在假定幾何過(guò)程的初始分布為對數正態(tài)分布的前提下,研究了幾何過(guò)程的統計推斷問(wèn)題。
