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Using Filtered Poisson Processes To Model A River Flow

机译:使用滤波泊松过程模拟河流流量

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摘要

Let X(t) be the flow of a river at time t. Models of the form X(t) = Σ_(n=1)~(N(t))Y_n(t-τ_n)~ke~(-(t- τ_n)/c) are considered, where the τ_n's are the arrival times of the events of the Poisson process {N(t),t ≥0} with rate λ, and the Y_n's are independent exponentially distributed random variables with parameter μ. The parameters c, λ and μ must be estimated. An application to the Delaware River is presented. We find that the basic model, namely that for which k = 0, can be significantly improved. We also use the model to forecast the river flow at time t + 1, based on the history of the process in the interval [0,t].
机译:设X(t)为时间t处的河流流量。考虑X(t)=Σ_(n = 1)〜(N(t))Y_n(t-τ_n)〜ke〜(-(t-τ_n)/ c)形式的模型,其中τ_n是到达速率为λ的Poisson过程{N(t),t≥0}的事件时间,Y_n是具有参数μ的独立指数分布随机变量。必须估计参数c,λ和μ。提出了对特拉华河的申请。我们发现基本模型,即k = 0的模型,可以得到显着改善。我们还基于间隔[0,t]中的过程历史,使用该模型预测时间t + 1处的河流流量。

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