A method is provided in accordance with an aspect of the present disclosure. The method includes processing data related to a group of contacts, where the data includes at least one attribute related to each of the contacts. The method also includes defining the at least one attribute based on a probability distribution of a context in relation to attribute values of the at least one attribute for all contacts. The method further includes determining clusters of contacts based on the probability distribution of the context in relation to the attribute values of the at least one attribute for all contacts, and constructing a plurality of segments of similar contacts by using the clusters.