Membership Cascade invitee invitee inviter Inviter invitee ·Q1: Who are inviters? ·Q2: Who are invitees?
16 Membership Cascade inviter inviter invitee invitee invitee • Q1: Who are inviters? • Q2: Who are invitees?
Membership Cascade-Inviter 1.0 1.0 0.8 0.8 0.6 06 04 04 0.2 0.2 0.0 0.0 10 Time interval between Time Interval between membership and first invitation(day) two consecutive invitations( day) >80% of consecutive 80% of the first invitations happen within 5 days after the invitations by the same inviter joining the group inviter happen within 2 days of interval
17 Membership Cascade—Inviter ~80% of the first invitations happen within 5 days after the inviter joining the group >80% of consecutive invitations by the same inviter happen within 2 days of interval