Twitter-User Scroll-Timeline-Algorithm

ScrollTimeline.java

while( timeOfUseLessThan(30minutes) && endOfTimelineNotReached() ) {
  
  currentTweet = scrollOverTweets(Random(1, 10))
  
  // simulate reading current tweet
  waitRandomBetween(1second, 10seconds)
  
  // click depending on kind of tweet
  // not always clicking, since seeing the preview might be enough
  if (currentTweet.contains(Images) && Random(0, 1) <= 0.5 ) {
    currentTweet.viewImages()
  }
  if (currentTweet.contains(Video) && Random(0, 1) <= 0.3 ) {
    currentTweet.viewVideo()
  }
  if (currentTweet.contains(Link) && Random(0, 1) <= 0.3 ) {
    currentTweet.clickLink()
    // simulate reading link's content
    waitRandomBetween(30seconds, 5minutes)
  }
  
  // reasons to click for details
  if (currentTweet.isThread() && Random(0, 1) <= 0.4) {
    currentTweet.clickDetailView()
    // simulate reading thread
    waitRandomBetween(20seconds, 3minutes)
  }
  if (currentTweet.hasComments() && Random(0, 1) <= 0.4) {
    currentTweet.clickDetailView()
    // simulate reading comments
    waitRandomBetween(10seconds, 2minutes)
  }
  
  if (currentTweet.containsHashtags() && Random(0, 1) <= 0.2) {
    // clicking on hashtag initiates new (shortened) scroll session
    currentTweet.clickOnRandomHashtagAndViewRelatedTweets()
  }
  
  if (Random(0, 1) <= 0.1) {
    // viewing author's profile could also lead to a new scroll session
    viewAuthorsProfile()
  }
  
  if (authorNotAlreadyFollowed() && Random(0, 1) <= 0.05) {
    directlyFollowAuthor()
  }
  // other actions like participateInSurvey() possible…

  // other direct interactions with tweet
  // retweeting with probability of 40%
  r = Random(0, 1)
  if ( r <= 0.3 ) {
    currentTweet.retweet()
  } else if ( r <= 0.4 ) {
    currentTweet.retweetWithComment()
  }
  
  // liking with same probability as for retweeting
  if ( Random(0, 1) <= 0.4 ) {
    currentTweet.like()
  }
  
  if ( Random(0, 1) <= 0.1 ) {
    currentTweet.reply()
  }
  if ( Random(0, 1) <= 0.1 ) {
    currentTweet.shareExternally()
  }

  returnToTimeline()

}