Under natural conditions on a class $\mathscr{F}$ of functions on a probability space, near optimal bounds are given for the probabilities $P\big(\sup_{f\in\mathscr{F}}|\sum_{i\leq n} f(X_i) - nE(f)| \geq M\sqrt n\big)$. The method is a variation of this author's method to study the tail probability of the supremum of a Gaussian process.
@article{1176988847,
author = {Talagrand, M.},
title = {Sharper Bounds for Gaussian and Empirical Processes},
journal = {Ann. Probab.},
volume = {22},
number = {4},
year = {1994},
pages = { 28-76},
language = {en},
url = {http://dml.mathdoc.fr/item/1176988847}
}
Talagrand, M. Sharper Bounds for Gaussian and Empirical Processes. Ann. Probab., Tome 22 (1994) no. 4, pp. 28-76. http://gdmltest.u-ga.fr/item/1176988847/