9. The method of claim 7 , wherein said constructing at least one graph comprises: constructing a first graph representing content similarities between the documents; and constructing a second graph indicating said relationship between the entities associated with the documents, said method further comprising: predicting whether an edge in the constructed first graph will be formed based on an uncovered relationship, predicting whether an edge in the second graph will be formed based on extracted topics, and constructing an entity relationship graph based the first graph and the second graphs.
10. The method of claim 9 , wherein weights of edges in said entity relationship graph that link between entities of different similarities are processed differently to uncover communities having community similarity.