Online Supplementary Materials For

Online Supplementary Materials for

The Effect of Individual Opinions on the Life Cycle of Social Media

S1: Supplementary Table

The simulation procedures, inputs, and pseudocodes are provided in Table S1.

Table S1 Procedures, inputs, and pseudocodesin the simulation

Procedure/Function / Pseudocode
/ for(in)
if(not in)
return
/ Addto
/ new Story

Addto

/ return
/ for(in)
removefrom
/ if()

/ if()

//…
//same goes for other opinion groups

S2: Supplementary Figures

(a) Users-I: Supporter of the Iranian government and fan of yellow stories /
(b) Users-II: Supporter of the Iranian government and fan of green stories

(c) Users-III: Oppositions of the Iranian government and fan of yellow stories /
(d) Users-IV: Oppositions of the Iranian government and fan of green stories

Fig. S1 Average weekly post rate in each quadrant simulated for a symmetric community over 1,000 days

Fig. S2 Average weekly online rates in each quadrant simulated for a symmetric community over 1,000 days

Fig. S3 Total weekly comments simulated for a symmetric community over 1,000 days

Fig. S4 Average weekly comments in each quadrant simulated for a symmetric community over 1,000 days

Fig. S5 Average weekly comment rates in each quadrant simulated for a symmetric community over 1,000 days

Fig. S6 Average post rates in each quadrant simulated for neutral/extreme communities over 1,000 days

Red lines for more neutral communities and blue lines for more extreme communities

Fig. S7 Average online rates in each quadrant simulated for neutral/extreme communities over 1,000 days

Red lines for more neutral communities and blue lines for more extreme communities

Fig. S8 Average post rates in each quadrant simulated for communities generating less/more attractive content over 1,000 days

Red lines for communities generating less attractive content and blue lines for communities generating more attractive content

Fig. S9 Average online rates in each quadrant simulated for communities generating more/less attractive contentover 1,000 days

Red lines for communities generating lessattractive content and blue lines for communities generating more attractive content

Fig. S10 Average comment rates in each quadrant simulated for communities generating less/more attractive content over 1,000 days; Red lines for communities generating less attractive content and blue lines for communities generating more attractive content