1. A method for providing a structural representation of a physical entity, comprising: updating, through at least one iteration of an aggregation engine, a state and a label of a first processing unit based on a state and on a label of a second processing unit and based on a link defined between the first processing unit and the second processing unit; forming a graphical representation of the physical entity based on the link and on the labels of the first and second processing units; and outputting the graphical representation; wherein a state of a given processing unit reflects a level of influence the given processing unit on other processing units and wherein a label of the given processing unit is an internal representation of a given element of the physical entity; wherein updating the state and the label of the first processing unit is further based on the state and the label of the first processing unit before the at least one iteration; and wherein a strength of the link between the first and second processing units is set according to a relationship of respective elements of the physical entity.