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arXiv 2406.02152econ.EMmath.STstat.TH
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多元非线性模型中体制数量选择的序贯检验程序

A sequential test procedure for the choice of the number of regimes in multivariate nonlinear models

Andrea Bucci

AI总结:

本文提出一种序贯检验程序,通过线性和无额外非线性检验确定非线性多元自回归模型的体制数量,模拟与实证均验证了其有效性。

摘要:

本文提出了一种序贯检验程序,用于确定非线性多元自回归模型中的体制数量。该程序依赖于线性检验和无额外非线性检验,适用于多元平滑转换自回归模型和阈值自回归模型。我们通过模拟研究评估了所提检验在小样本下的有限样本性质。研究结果表明,该检验具有令人满意的水平性质,其中重标度的Lagrange Multiplier检验统计量在大多数模拟设置中表现最佳。该序贯程序还被应用于两个实证案例:美国月度利率和冰岛河流流量。在两个案例中,检测到的体制数量与现有文献高度一致。

英文摘要:

This paper proposes a sequential test procedure for determining the number of regimes in nonlinear multivariate autoregressive models. The procedure relies on linearity and no additional nonlinearity tests for both multivariate smooth transition and threshold autoregressive models. We conduct a simulation study to evaluate the finite-sample properties of the proposed test in small samples. Our findings indicate that the test exhibits satisfactory size properties, with the rescaled version of the Lagrange Multiplier test statistics demonstrating the best performance in most simulation settings. The sequential procedure is also applied to two empirical cases, the US monthly interest rates and Icelandic river flows. In both cases, the detected number of regimes aligns well with the existing literature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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