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Improved Lower Bounds on the Total Variation Distance for the Poisson Approximation (1301.7504v4)
Published 31 Jan 2013 in cs.IT and math.IT
Abstract: New lower bounds on the total variation distance between the distribution of a sum of independent Bernoulli random variables and the Poisson random variable (with the same mean) are derived via the Chen-Stein method. The new bounds rely on a non-trivial modification of the analysis by Barbour and Hall (1984) which surprisingly gives a significant improvement. A use of the new lower bounds is addressed.