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math.ST2025
Double Local-to-Unity: Inference under Nearly Nonstationary Volatility
Abir Sarkar, Martin T. Wells
This article develops a moderate-deviation limit theory for autoregressive models with jointly persistent mean and volatility dynamics. The autoregressive coefficient is allowed to…
math.ST2025
Constructing Bayes Minimax Estimators through Integral Transformations
Dominique Fourdrinier, William E. Strawderman, Martin T. Wells
The problem of Bayes minimax estimation for the mean of a multivariate normal distribution under quadratic loss has attracted significant attention recently. These estimators have…