共查询到20条相似文献,搜索用时 46 毫秒
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改进和推广了平稳随机过程x(t)的采样定理求出了它的一致收敛速度及误差估计,并讨论了x(t)的均方导数及均方积分的采样定理. 相似文献
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A continuous-time random graph process with state space consisting of the simple and directed graphs on N vertices is introduced.We obtain the stationary distribution of the process under different couditions and prove that the stationary distribution is unique. 相似文献
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继文献[1],求出了谱测度集中在[-π/△,π/△]上的具有连续参数的宽平稳随机过程x(t)的相关函数,谱密度函数和谱函数的估计及它们的一致收敛速度.这些估计及一些收敛速度都是基于离散采样(x(k△),k=0,±1,±2,…)上的. 相似文献
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设{Xt,t≥0}为定义在R^d上的随机过程,它由模型Xt=zt Φ(Yt) εt确定,{Yt}和{εt}相互独立,而zt为非随机变量,对于连续观察的样本,本文给出了非参数密度核估计极其在均方意义下的最优收敛速度,并讨论了非随机项运动形式对此速度的影响。 相似文献
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设{X_t}_(t=0 (?)±(?)…)是平稳序列,且可表示为X_t=sum from j=-∞ to +∞ b_(t-j(?)j) (1)的形式。在一维情况下,Barttett 对(?)_j 为 i.i.d 随机变量的情形得到了相关系数估计的渐近均方误差公式(即 Barttetl 公式)在多维情形,当{(?)_j}是多维的 i.i.d 序列时讨论了X_t 的相关估计的渐近均方误差公式。本文在{(?)_j}为多维鞅差序列的假定下得到了多维的 相似文献
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该文对带有随机趋势的非平稳过程给出了一种新的因果度量定义.作者将证明新定义与Hosoya给出的因果度量定义等价, 但由于避免了以往文献中常见的对非平稳过程协整性的要求, 该定义有利于简化因果关系的假设检验.文中还对Wald检验和似然比检验进行了讨论.数值模拟和实证分析表明, 这两种检验方法都是有效的. 相似文献
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{X(t),0≤t≤T}为均方可微非平稳高斯过程。具有渐近中心化的均值m(t)和常数的方差, NT(·)为{X(t),0≤t≤T}上穿过水平uT的点过程,则在一定的条件下匕穿过点过程NT(·)依分布收敛到一Poisson过程. 相似文献
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本文研究多维平稳过程x(t)对线性系统的滤波问题.当x(t)是满秩正则平稳过程时,给出了最优解ξ的谱特征和均方误差,并且找到了ξ存在的充分必要条件. 相似文献
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An integral representation for an arbitrary bounded operator T defined on a Hilbert space ${\mathcal{H}}$ is given. The representing measure is in general defined on a Jordan curve surrounding the spectrum of T. It is obtained as a limit, in a certain weak sense, of a family (F r ) of absolutely continuous measures the Radon?CNikodym derivative of which (with respect to the standard Lebesgue measure on the considered Jordan curve) are described explicitly in terms of the operator T and its adjoint T *. 相似文献
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《Statistical Inference for Stochastic Processes》2001,4(2):1-2
Table of Contents
Statistical Inference for Stochastic Processes 相似文献16.
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We introduce and study a class of non-stationary semi-Markov decision processes on a finite horizon. By constructing an equivalent Markov decision process, we establish the existence of a piecewise open loop relaxed control which is optimal for the finite horizon problem. 相似文献
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This paper is concerned with processes which are max-plus counterparts of
Markov diffusion processes governed by Ito sense stochastic differential
equations. Concepts of max-plus martingale and max-plus stochastic differential
equation are introduced. The max-plus counterparts of backward and forward
PDEs for Markov diffusions turn out to be first-order PDEs of
Hamilton–Jacobi–Bellman type. Max-plus additive integrals and a max-plus
additive dynamic programming principle are considered. This leads to
variational inequalities of Hamilton–Jacobi–Bellman type. 相似文献