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41.
曹发祯 《佛山科学技术学院学报(社会科学版)》1994,(2)
讨论了已知初项α1.而通项由速归式an+1=f(an)(n>1)确定的递归数列,给出了利用导数判定其收效性,并求出其极限的方法. 相似文献
42.
本文提出了基于DDA器件原理的增量调制递归数字滤波器的实现方案,并做出了实验设备.实验结果表明DDA-DM递归数字滤波器具有低运算噪声的优点,其性能与理论分析十分一致. 相似文献
43.
We study the structure and point out weaknesses of recently proposed random number generators based on special types of linear recurrences with small coefficients, which allow fast implementations. Our theoretical analysis is complemented by the results of simple empirical statistical tests that the generators fail decisively. Directions for improvement and alternative generators are also pointed out. 相似文献
44.
Discrete autocorrelation (a.c.) wavelets have recently been applied in the statistical analysis of locally stationary time series for local spectral modelling and estimation. This article proposes a fast recursive construction of the inner product matrix of discrete a.c. wavelets which is required by the statistical analysis. The recursion connects neighbouring elements on diagonals of the inner product matrix using a two-scale property of the a.c. wavelets. The recursive method is an (log (N)3) operation which compares favourably with the (N log N) operations required by the brute force approach. We conclude by describing an efficient construction of the inner product matrix in the (separable) two-dimensional case. 相似文献
45.
M. Shelton Peiris 《统计学通讯:理论与方法》2013,42(12):3659-3668
The general nonstationary ARMA model with time dependent coefficients is considered and a necessary and sufficient condition for the existence of the solution of such a model is given. A simple form of the above solution is expressed as a one-sided-moving average, in terms of one-sided Green's functions. Using these results we solve the Prediction Problem and give some expressions for the h(>0) step-ahead linear predictor of such a process. A few examples are added to illustrate the theory. 相似文献
46.
陈子栋 《绍兴文理学院学报》2009,29(8)
求解了Kratzer势的Schr(o)dinger方程,得到了归一化的波函数和能量方程.用Laplace变换使径向的二阶微分方程退化为一阶微分方程,直接积分后用级数展开,应用Laplace逆变换得出本征函数.另外,用Laplace变换方法给出了径向波函数关于量子数N和角量子数L的二类递推关系. 相似文献
47.
Abdelhakim Aknouche 《Journal of Statistical Computation and Simulation》2013,83(2):370-383
This paper develops a recursive expectation–maximization (REM) algorithm for estimating a mixture autoregression (MAR) with an independent and identically distributed regime transition process. The proposed method, which is useful for long time series as well as for data available in real time, follows a recursive predictor error-type scheme. Based on a slightly modified system to the expectation–maximization (EM) equations for an MAR model, the REM algorithm consists of two steps at each iteration: the expectation step, in which the current unobserved regime transition is estimated from new data using previous recursive estimates, and the minimization step, in which the MAR parameter estimates are recursively updated following a minimization direction. Details of implementation of the REM algorithm are given and its finite-sample performance is shown via simulation experiments. In particular, the EM and REM provide roughly similar estimates, especially for moderate and long time series. 相似文献
48.
49.
Robert E. Johnson 《统计学通讯:模拟与计算》2013,42(4):1209-1213
An algorithm for computing probabilities from Jensen's Bivariate F Distribution was given by McAllister, Lee and Holland (1981). One portion of their algorithm involves the calculation of coefficients that require summing over all nonnegative integer partitions of 0,1,2,…,N of size r. Presented here is an alternative method for generating the coefficients by successive convolutions which significantly reduces computation time. 相似文献
50.
Michihiro Kandori 《Econometrica : journal of the Econometric Society》2011,79(3):877-892
Repeated games with imperfect private monitoring have a wide range of applications, but a complete characterization of all equilibria in this class of games has yet to be obtained. The existing literature has identified a relatively tractable subset of equilibria. The present paper introduces the notion of weakly belief‐free equilibria for repeated games with imperfect private monitoring. This is a tractable class which subsumes, as a special case, a major part of the existing literature (the belief‐free equilibria). It is shown that this class can outperform the equilibria identified by the previous work. 相似文献