Good Ratings Gone Bad: Study Shows Recommender Systems Can Manipulate Users' Opinions

This is a news article published in "Science Daily" on 8 april 2003. It says that according to a study conducted by University of Minnesota researchers a system which lies about user ratings can manipulate user's opnions. They conducted three different experiments where they tried different ratings and predictions for movies and examined how other users opnion changes according to this changes. For full article Click Here.