The Graded Possibilistic Clustering Model Francesco Masulli and Stefano Rovetta Abstract This paper presents the graded possibilistic model. After reviewing some clustering algorithms derived from c- Means, we provide a unified perspective on these clustering algorithms, focused on the memberships rather than on the cost function. Then the concept of graded possibility is introduced. This is a partially possibilistc version of the fuzzy clustering model, as compared to Krishnapuram and Keller’s possibilistic clustering. We outline a basic graded possibilistic clustering algorithm and highlight the different properties attainable by means of experimental demonstrations. Proceedings of the 2003 International Joint Conference on Neural networks