Nitis Mukhopadhyay

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We give some comments and supplementary results on Professor Frisén's comprehensive survey of sequential surveillance and its applications. Our discussion focuses on evaluation criteria and optimality, multivariate and Markov-dependent observations, financial and public health applications, and a tractable Bayesian model that can accommodate unknown pre-and(More)
Let X 1 X 2 X n be independent and identically distributed with distribution function F. A statistician may choose two X values from the sequence by means of two stopping rules t 1 t 2 , with the goal of maximizing EEX t 1 ∨ X t 2. We describe the optimal stopping rules and the asymptotic behavior of the optimal expected stopping values, V 2 n , as n → →,(More)
Quickest detection is a fascinating area of sequential analysis that spans across various branches of science and engineering. It is a pleasure to welcome Professor Albert Shiryaev's article, which provides a comprehensive overview (both scientific and historic) of this area. In this discussion, we expand on some of the issues raised in the article that we(More)