A Nonparametric Test for Autoregressive Conditional Heteroscedasticity: A Markov-Chain Approach
自回归条件异方差的非参数检验:马尔可夫链方法AI 解读 ↓
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自回归条件异方差的非参数检验:马尔可夫链方法AI 解读 ↓
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In this article we propose a nonparametric test for autoregressive conditional heteroscedasticity based on finite-state Markov chains. A simple Monte Carlo experiment suggests that in finite samples it performs comparably to the Lagrange multiplier test under conditional normality and is superior for the t, lognormal, and exponential distributions. As an illustration, we apply both tests to Canadian/U.S. forward foreign exchange data.
即期相关过程日内变动的非参数检验
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非线性模型时变参数的局部多项式估计
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协变量增强的累积和泡沫监测程序
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网络依赖时间序列的频域分析:全球银行关联应用
Financial spillovers in interconnected systems, such as global banking networks, require tools that capture temporal and frequency dynamics, while incorporating the underlying network topology. While current network time series models are developed in the time-domain, frequency-domain approaches, which reveal how cross-nodal dependencies vary across different cycles, remain under-explored. This paper develops a spectral analysis framework that accommodates flexible forms of…
理解金融时间序列多元分位数动态的非参数方法
Over the last decade, nonparametric methods have gained increasing attention for modeling complex data structures due to their flexibility and minimal structural assumptions. In this paper, we study a general multivariate nonparametric regression framework that encompasses a broad class of parametric models commonly used in financial econometrics. Both the response and the covariate processes are allowed to be multivariate with fixed finite dimensions, and the framework…