Abstract
<abstract><p>A novel concentration inequality for the sum of independent sub-Gaussian variables with random dependent weights is introduced in statistical settings for high-dimensional data. The random dependent weights are functions of some regularized estimators. We applied the proposed concentration inequality to obtain a high probability bound for the stochastic Lipschitz constant for negative binomial loss functions involved in Lasso-penalized negative binomial regressions. We used this bound to study oracle inequalities for Lasso estimators. Additionally, a similar concentration inequality was derived for a randomly weighted sum of independent centred exponential family variables.</p></abstract>
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