Is Scopus polluting its own database by indexing junk articles? A case study of five journals

The aim of this short research note is to demonstrate that Scopus is polluting its own databases, unintentionally or otherwise, by indexing junk articles. I have used five journals indexed by Scopus in this research note as examples in a case study format. I have found that the publication rate of junk articles for these five journals increased after they began to be indexed in Scopus. These journ…