Retracted: E-Learning Recommender Systems Based on Goal-Based Hybrid Filtering

The paper titled “E-Learning Recommender Systems Based on Goal-Based Hybrid Filtering” [1], published in International Journal of Distributed Sensor Networks, has been retracted as it was accepted for publication on the basis of peer review reports that were submitted from fraudulent reviewer accounts.

In late 2014, a number of publishers discovered widespread abuse of the peer review process, including cases of identity theft and faked review reports. In July 2015, Hindawi concluded an extensive investigation into peer review fraud and identified a number of articles that had been accepted on the basis of fraudulent peer review reports.

In accordance with the guidelines of the Committee on Publication Ethics (COPE), this article has been retracted on the basis that fraudulent review reports were submitted by one of the article's co-authors, Jason Jung.