Optimization of e-business process allows increasing earning profits in e-business. Models based on gap processes for the analysis of buyers' burstiness in e-business process have attracted an increased research interest in order to succeed in the optimization of e-business process. The research aim is to find model approaches for creating gap structures and the description of their characteristic properties with a required accuracy underpinning elaboration of a new research question.

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... plinary research was carried out within the present investigation. The results of the present research show gap structures and gap characteristic properties. In e-business, gap structure means a range of shop visitors who do not buy any product. The gap characteristic properties are defined as gap density and gap distribution function. The empirical study involved eight experts from different countries to validate the model and to project the research. The findings of the study allow drawing the conclusions on the experts' positive evaluation of the mathematical model for analysis of buyers' burstiness in e-business process. The novel contribution of the paper is revealed by the comparison of model approaches for creating gap structures and the description of their characteristic properties with a required accuracy. Directions of further research are proposed.