A __________ in a social graph is a group of people who interact frequently with each other and less frequently with others.
(a) semi-cluster
(b) partial cluster
(c) full cluster
(d) none of the mentioned
(a) semi-cluster
(b) partial cluster
(c) full cluster
(d) none of the mentioned
Correct option is (a) semi-cluster
To explain: semi-cluster is different from ordinary clustering in the sense that a vertex may belong to more than one semi-cluster.