Roles have turned into the de facto standard for access control in enterprise identity management systems. However, as roles evolve over time, companies struggle to develop and maintain a consistent role model. Up to now, the core challenge of measuring the current quality of a role model and selecting criteria for its optimization remains unsolved. In this paper, we conduct a survey of existing role mining techniques and
identify quality criteria inherently used by these approaches. This guides organizations during the selection of a role mining technique that matches their company-specific quality references. Moreover, our analysis aims to stimulate the research community to integrate quality metrics in future role mining approaches.