Blar i Institutt for matematiske fag på forfatter "Ushakov, Vladimir"
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The multivariate distributions of output streams in a queueing system with preemptive repeat priority
Ushakov, Nikolai; Ushakov, Vladimir (Peer reviewed; Journal article, 2021)The paper studies a single server queuing system with r types of customers, preemptive repeat priority and an infinite number of positions in the queue. The arrival stream of customers of each type is a Poisson stream. Each ... -
On sensitivity of exponentiality tests to data rounding: a Monte Carlo simulation study
Ushakov, Nikolai; Ushakov, Vladimir (Journal article; Peer reviewed, 2021)Different statistical procedures are differently sensitive to data rounding. It turns out that tests for exponentiality are more sensitive to the data rounding than many classical parametric tests or than nonparametric ... -
On the effect of rounding on hypothesis testing when sample size is large
Ushakov, Nikolai; Ushakov, Vladimir (Peer reviewed; Journal article, 2022)It is well known that sample moments are more sensitive and less robust than order statistics for robustness with respect to outliers. In this article, we show that the situation is exactly the opposite for robustness with ...