1. A method comprising: classifying experience states based on a predefined hierarchical model of needs, to yield a classification; modeling a real-life environment into a model that includes a set of process instances associated with users; extracting experience-related data associated with the users from the model, based on the classification; and representing the experience-related data of each one of the process instance as a non-textual time series, based on the classification, wherein at least one of: the modeling, the extracting, and the representing is executed by a processor.