id author title date pages extension mime words sentence flesch summary cache txt v979v12182w Cheng Wang Three Essays on Triadic Evolution in a Large-scale Mobile Phone Network 2012 .txt text/plain 341 13 43 Real social networks are often compared to random graphs in order to assess whether their typological structure could be the result of random processes. I also review various theories of triangle formation and persistence – balance theory, predisposition theory, tie strength theory, status homophily theory and embeddedness theory – and assess the extent to which reported findings are consistent with these theories. cache/v979v12182w.txt txt/v979v12182w.txt