tpoisot
commented
10 years ago Adressed in commit 6b1eab7 -- Q'R values are expected to be close to 0 if the modules are determined at random, but are expected to increase when modularity becomes more significant
The straightforward interpretation of QR is changed in Q'R, the version the author describes as being scaled between 0 and 1, only to report negative values later on in the paper (Fig. 2). For networks of unknown modularity, Q'R can actually take values between -1 and 1. Furthermore, the notion that negative values of Q'R detect cases of spuriously significant modularity is not generally correct. The threshold of meaningful modularity depends on the purpose and may be above or below Q'R =0.