Title
SPEED AND CONCENTRATION OF THE COVERING TIME FOR STRUCTURED COUPON COLLECTORS
Abstract
Let V be an n-set, and let X be a random variable taking values in the power-set of V. Suppose we are given a sequence of random coupons X-1, X-2, ..., where the X-i are independent random variables with distribution given by X. The covering time T is the smallest integer t >= 0 such that boolean OR(t)(i=1) X-i = V. The distribution of T is important in many applications in combinatorial probability, and has been extensively studied. However the literature has focused almost exclusively on the case where X is assumed to be symmetric and/or uniform in some way. In this paper we study the covering time for much more general random variables X; we give general criteria for T being sharply concentrated around its mean, precise tools to estimate that mean, as well as examples where T fails to be concentrated and when structural properties in the distribution of X allow for a very different behaviour of T relative to the symmetric/uniform case.
Year
DOI
Venue
2016
10.1017/apr.2020.5
ADVANCES IN APPLIED PROBABILITY
Keywords
Field
DocType
Coupon collector,concentration inequalities,combinatorial probability
Coupon,Discrete mathematics,Combinatorics,Random variable,Mathematics
Journal
Volume
Issue
ISSN
52.0
2
0001-8678
Citations 
PageRank 
References 
0
0.34
2
Authors
3
Name
Order
Citations
PageRank
Victor Falgas-Ravry1287.46
Joel Larsson200.34
Klas Markström316225.84