A pairwise likelihood-based approach for changepoint detection in multivariate time series models
基于成对似然的多元时间序列变点检测AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究多元时间序列中的多个变点及分段模型选择,直接对应时间序列与结构变化方法。
基于成对似然的多元时间序列变点检测AI 解读 ↓
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This paper develops a composite likelihood-based approach for multiple changepoint estimation in multivariate time series. We derive a criterion based on pairwise likelihood and minimum description length for estimating the number and locations of changepoints and for performing model selection in each segment. The number and locations of the changepoints can be consistently estimated under mild conditions and the computation can be conducted efficiently with a pruned dynamic programming algorithm. Simulation studies and real data examples demonstrate the statistical and computational efficiency of the proposed method.
多维速度变化检测中惩罚最大似然估计的一致性
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拟最大似然断点估计的锐信噪比阈值
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基于 Copula 马尔可夫模型的 Weibull 时间序列变点估计
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分类时间序列的变点检测及加拿大每日总云量应用
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混合矩阵值自回归模型
Time series of matrix-valued data are increasingly available in various areas including economics, finance, social science, among others. These data may shed light on the inter-dynamical relationships between two sets of attributes, for instance, countries and economic indices. The matrix autoregressive (MAR) model provides a parsimonious approach for analyzing such data. However, the MAR model, being a linear model with parametric constraints, cannot capture the nonlinear…
含外生变量的组成时间序列序贯变点检测
Sequential change-point detection for time series enables us to sequentially check the hypothesis that the model still holds as more and more data are observed. It is widely used in data monitoring in practice. In this work, we consider sequential change-point detection for compositional time series, time series in which the observations are proportions. For fitting compositional time series, we propose a generalized Beta AR(1) model, which can incorporate exogenous…