Table 1. Relative importance of dissemination across users, dissemination across threads, and frequency in word dynamics.

Group
comp.os.linux.misc
rec.music.hip-hop

Relative importance of the three factors as predictors of frequency change (), calculated using the method of Ref. [62]. Importance is based on the fraction of the variance of explained by each factor. This method conservatively estimates the relative importance of the independent variables in a multiple regression setting. The data are combined over all window pairs considered in Figure 3. To avoid artifactual correlations for small and large , the range of words is restricted in , as indicated in the caption of Figure 5.