摘要：AbstractIn this paper we discuss the concept of reciprocity in social network. The concept taken for the study is personal sharing among students of second year post graduate programme in two different Universities in India. The data collected is represented as a directed graph in which an arc from one vertex to another vertex represents the existence of personal sharing between the corresponding students. An analysis of these directed graphs is carried out and influential actors in the network are identified. Further the pattern of personal sharing between male and female students reveals a substantial difference of behaviour between the two Universities.
