Retraction

RETRACTION : L. Sun , X. Xu , Y. Yang , W. Liu , and J. Jin , “,” Computational Intelligence 36 no. ( 2020 ): 1686 – 1703 , https://doi.org/10.1111/coin.12306 . The above article, published online on 04 March 2020 in Wiley Online Library ( wileyonlinelibrary.com ) has been retracted by agreement between the journal Editor‐in‐Chief, Diana Inkpen; and Wiley Periodicals LLC. The article was published as part of a guest‐edited issue. Following an investigation by the publisher, all parties have concluded that this article was accepted solely on the basis of a compromised peer review process. The editors have therefore decided to retract the article. The authors have been informed of the retraction.