PhFit: A General Phase-type Fitting Tool

András Horváth, Miklós Telek


PhFit, a new Phase-type fitting tool is presented in this paper. The presented tool is novel from several aspects. It allows for approximating distributions or set of samples not only by continuous but by discrete Phase-type distributions as well. The implemented algorithms separate the fitting of the body and the tail part of the distribution which results in satisfactory fitting also for heavy-tail distributions. Moreover, PhFit allows the user to choose the distance measure according to which the fitting is performed. In order to facilitate to control the fitting process, the tool is equipped with a graphical interface that visualizes the goodness of the provided approximation from several aspects.


[Publications of András Horváth]

András Horváth, 2008-06-25