Copula structured M4 processes with application to high-frequency financial data
Copula 结构的 M4 过程及其在高频金融数据中的应用AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确使用高频金融序列的日内极大值,并研究极端值的渐近依赖结构,对应高频计量与尾部风险。
Copula 结构的 M4 过程及其在高频金融数据中的应用AI 解读 ↓
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Statistical applications of classical parametric max-stable processes are still sparse mostly due to lack of (1) efficiency of statistical estimation of many parameters in the processes, (2) flexibility of concurrently modeling asymptotic independence and asymptotic dependence among variables, and (3) capability of fitting real data directly. This paper studies a more flexible model, i.e. a class of copula structured M4 (multivariate maxima and moving maxima) processes, and hence CSM4 for short. CSM4 processes are constructed by incorporating sparse random coefficients and structured extreme value copulas in asymptotically (in)dependent M4 (AIM4) processes. It is shown that the new model overcomes all of the aforementioned three constraints. The paper illustrates new features and advantages of the CSM4 model using simulated examples and real data of intra-daily maxima of high-frequency financial time series. The paper also studies probabilistic properties of the proposed model, and its statistical inference.