Gist for Simple RTB Game

user_class.py

class user:
  """
  The user class defines a user which are a part of the game
  It keeps the views and clicks vector for all the ads and shares the
  data to the bidder only about the ads the bidder owns

  It also determines whether it will see the ad or not depending on
  the overall clicks and views of all ads.

  It also updates the vectors based on the view and click. The data about
  other preferences of the user is not revealed and the bidder never stores the
  user data, thus maintaing privacy
  """
  def __init__(self, view_vec, click_vec):
    self.view_vec = view_vec
    self.click_vec = click_vec
  
  def toss(self):
    clicks = np.zeros(self.view_vec.size)
    views_n = self.view_vec+0.1
    views_n = views_n/np.linalg.norm(views_n, 1)
    clicks_n = self.click_vec+0.1
    clicks_n = clicks_n/np.linalg.norm(clicks_n, 1)
    r = views_n/clicks_n
    prob = abs((1-r)/(1+r))
    for j in range(clicks.size):
      clicks[j] = np.random.binomial(1, prob[j])
    
    return clicks, views_n, clicks_n
  
  def update(self, view, click):
    if view>-1:
      self.view_vec[view]+=1
    if click==1:
      self.click_vec[view]+=1