This work has been supported by the Academy of Finland project “Nestor” (286211) and the EC H2020 RIA project “SoBigData” (654024). Difference of the probability that a random walk starting on one side of the partition will stay on the same side and the probability that the random walk will cross to the other side. Reducing Controversy by Connecting Opposing Views Kiran Garimella*, Gianmarco De Francisci Morales#, Aristides Gionis*, Michael Mathioudakis* *Aalto University/HIIT, #Qatar Computing Research Institute {kiran.garimella,aristides.gionis,michael.mathioudakis}@aalto.fi, gdfm@acm.org