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首页> 外文期刊>Journal of Time Series Analysis >DETERMINISTIC PARAMETER CHANGE MODELS IN CONTINUOUS AND DISCRETE TIME
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DETERMINISTIC PARAMETER CHANGE MODELS IN CONTINUOUS AND DISCRETE TIME

机译:连续和离散时间的确定性参数变化模型

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摘要

We consider a model of deterministic one-time parameter change in a continuous time autoregressive model around a deterministic trend function. The exact discrete time analogue model is detailed and compared to corresponding parameter change models adopted in the discrete time literature. The relationships between the parameters in the continuous time model and the discrete time analogue model are also explored. Our results show that the discrete time models used in the literature can be justified by the corresponding continuous time model, with a only a minor modification needed for the (most likely) case where the changepoint does not coincide with one of the discrete time observation points. The implications of our results for a number of extant discrete time models and testing procedures are discussed.
机译:我们考虑围绕确定性趋势函数的连续时间自回归模型中的确定性一次性参数变化模型。详细介绍了精确的离散时间模拟模型,并将其与离散时间文献中采用的相应参数更改模型进行了比较。还探讨了连续时间模型和离散时间模拟模型中参数之间的关系。我们的结果表明,文献中使用的离散时间模型可以通过相应的连续时间模型来证明是正确的,对于(最可能的)变更点与离散时间观察点之一不一致的情况,只需要进行少量修改即可。 。讨论了我们的结果对许多现存离散时间模型和测试程序的影响。

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