Predictive analysis relating to nodes of a communication network is carried out by providing communication event information for a first set of nodes and a second set of nodes of the communication network, providing a set of attributes for the nodes of the first set, using the attributes and the communication event information for determining a set of groups among the first set of nodes, assigning each node of the second set to at least one group of the set of groups based at least on the communication event information available for the second group, the assigning resulting in membership information of the nodes of the second set, and deriving or applying a prediction model for the second set of nodes based on the communication event information for the second set and the membership information.