return rating * rating;
return rating * rating * rating;
  public float getProbability(Track track) {    if (track.isRated()) {      float rating = track.getRating();              // This will mean that a track is only recommended to a user if the        // rating is strictly above 5. That means that there has to be at least        // one person who think's it's better than just alright.      if (rating > 5)        return rating * rating;    }    return 0;  }