- Convergence rates of Laplace-transform based estimators
- Volume | Issue number
- 23 | 4A
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Korteweg-de Vries Institute for Mathematics (KdVI)
This paper considers the problem of estimating probabilities of the form IP(Y <= w), for a given value of w, in the situation that a sample of i.i.d. observations X-1,..., X-n of X is available, and where we explicitly know a functional relation between the Laplace transforms of the non-negative random variables X and Y. A plug-in estimator is constructed by calculating the Laplace transform of the empirical distribution of the sample X-1,..., X-n, applying the functional relation to it, and then (if possible) inverting the resulting Laplace transform and evaluating it in w. We show, under mild regularity conditions, that the resulting estimator is weakly consistent and has expected absolute estimation error O (n(-1/2) log(n + 1)). We illustrate our results by two examples: in the first we estimate the distribution of the workload in an M/G/1 queue from observations of the input in fixed time intervals, and in the second we identify the distribution of the increments when observing a compound Poisson process at equidistant points in time (usually referred to as "decompounding").
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