The similarities between users are not calculated properly. That's why there is a strict threshold for them to be connected to each other. Thresholds lower than 0.7 make a huge community but thresholds greater than 0.75 just keep communities that their members have exactly the same connections (Which is also not a good thing! There are multiple nodes with exactly the same connections in the users' graphs).
The similarities between users are not calculated properly. That's why there is a strict threshold for them to be connected to each other. Thresholds lower than 0.7 make a huge community but thresholds greater than 0.75 just keep communities that their members have exactly the same connections (Which is also not a good thing! There are multiple nodes with exactly the same connections in the users' graphs).
0<Threshold<0.7:
0.75<Threshold<1