Semantic information ismore importa

Semantic information ismore important tohumansthan the complicated topology structure. For example, similar text information in their messages motivates us to conclude in the EZ case that Inez is similar to George, who is definitely a conspirator (for instance,“tired” when describing Inez and “stressed” when describing George). Similar cases can be also found in the 83-people network case: The word “Spanish” from known conspiratorial topic 7 is highly suspicious and appears repeatedly in otherunknowntopics (e.g., topic 2 and 12). The contents about “computer security,” which istreated as part of the key in the whole conspiracy, is also active in many other unknown topics, such as 5 and 15. Hence, it is natural to train acomputer to measure similarities among topics so as to reveal potential information.