Article ID Journal Published Year Pages File Type
1155335 Statistics & Probability Letters 2006 5 Pages PDF
Abstract
We study the deviation probability P{|∥X∥-E∥X∥|>t} where X is a ϕ-subgaussian random element taking values in the Hilbert space l2 and ϕ(x) is an N-function. It is shown that the order of this deviation is exp{-ϕ*(Ct)}, where C depends on the sum of ϕ-subgaussian standard of the coordinates of the random element X and ϕ*(x) is the Young-Fenchel transform of ϕ(x). An application to the classically subgaussian random variables (ϕ(x)=x2/2) is given.
Related Topics
Physical Sciences and Engineering Mathematics Statistics and Probability
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