[Retracted] Preserving the Privacy of Healthcare Data over Social Networks Using Machine Learning

Table 1

Types of abnormal users.

Abnormal user types	Main existence platform
Spammer	Twitter, Weibo platform, CNN, Amazon, Yelp
Hoaxes	Wikipedia
Bot	Twitter
Sock-puppet	Wikipedia, Twitter, Facebook, CNN
Troll	Slashdot zoo, Wikipedia
Fake user	Google, Twitter, Amazon
Vandal	Twitter, Wikipedia, TCP