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Probabilistic forecasting of bubbles and flash crashes

机译:漏洞和闪存的概率预测

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We propose a near-explosive random coefficient autoregressive model (NERC) to obtain predictive probabilities of the apparition and devolution of bubbles. The distribution of the autoregressive coefficient of this model is allowed to be centred at an O(T~(-α)) distance of unity, with α ∈ (0, 1). When the expectation of the autoregressive coefficient lies on the explosive side of unity, the NERC helps to model the temporary explosiveness of time series and obtain related predictive probabilities. We study the asymptotic properties of the NERC and provide a procedure for inference on the parameters. In empirical illustrations, we estimate predictive probabilities of bubbles or flash crashes in financial asset prices.
机译:我们提出了一种近爆炸的随机系数自回归模型(NERC),以获得气泡幻觉和下放的预测概率。允许该模型的自回归系数的分布以o(t〜( - α))为中心的统一距离,α∈(0,1)。当对自归系数​​的期望在于统一的爆炸方面时,NERC有助于模拟时间序列的临时爆炸性并获得相关的预测概率。我们研究了NERC的渐近性质,并提供了对参数推断的过程。在经验的插图中,我们估计金融资产价格中泡沫或闪存崩溃的预测概率。

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