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Somayeh Ghafouri

Publications and source records attributed to Somayeh Ghafouri.

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Measures of inaccuracy based on Varextropy

Recently, varextropy has been introduced as a new dispersion index and a measure of information. In this article, we derive the generating function of extropy and present its infinite series representation. Furthermore, we propose new variability measures: the inaccuracy and weighted inaccuracy measures between two random variables based on varextropy and we investigate their properties. We also obtain lower bounds for the inaccuracy measure and compare them with each other. In addition, we introduce a discrimination measure based on varextropy and employ it both for comparing probability distributions and for assessing the goodness of fit of distributions to data model selection problems. The proposed measure is also compared with the dispersion index derived from the Kullback-Leibler divergence given in Balakrishnan et al. (2024).

math.ST

Varextropy of doubly truncated random variable

Recently, there has been growing attention to study uncertainty measures for doubly truncated random variables. In this paper, the concept of varextropy for doubly truncated random variables is introduced. The changes of this measure under linear transforms are investigated. Also, lower and upper bounds for the interval varextropy under some conditions are obtained and some other properties for this measure are proved. In the following, three estimators for the interval varextropy are proposed. A simulation study has been carried out to investigate the behavior of estimators. At the end, an application for these estimators is proposed.

math.ST