A 360-degree performance appraisal model dealing with heterogeneous information and dependent criteria

360-degree performance appraisal process is used as a tool that provides an evaluation about employees performance. It is based on the opinion of different groups of reviewers who socialize with evaluated employees. Many criteria must be considered in performance appraisal that may have different nature and usually present uncertainty. Therefore, it seems necessary and appropriate to provide a heterogeneous framework adapted to the nature of the criteria. In this context, criteria can be asses by reviewers, according to their background and degree of knowledge about evaluated employees. Furthermore, the interaction among criteria, as well as reviewers weights should be taken into account to ensure an effective aggregation process of the information, providing interpretable and understandable evaluations. In this paper, we present an integrated model for 360-degree performance appraisal that can manage heterogenous information and computes a final linguistic evaluation for each employee, applying an effective aggregation that considers the interaction among criteria and reviewers weights. We also present a real case study to show the usefulness and effectiveness of the proposed model.