Although activity gaps are inevitable, it is crucial to retrieve the most active users while avoiding activity gaps in their timelines.
Figures 8 and 9 show the daily activity of the 100 most active users during 632 days for the activity-based and random sampling respectively.
We decided to sample from Twitter's most active users to find early-adopter activity.
We address two main characteristics in our sampling model: (a) obtaining the most active users, (b) avoiding missing content or activity gaps over time.
In fact, we leverage user profiles to estimate their activities in the past and to determine the most active users as opposed to expert users.
The most active users of the system have been surveyed.
On other online social networks the most active users typically produce just 30% of all content.
Overall, the number of driving trips increased among users, but that difference was small among the most active users.
"They were like, 'Ugh, I don't need that,' but now, some of them are our most active users," he said.
Since he discovered Twitter, last spring, he has become one of China's most active users, with about thirty-six thousand followers.
The new fees will affect only the most active users, those who spend an average of nearly five hours on line a day.
