Nowadays, free online Journal Finder services are available to help authors to find a perfect Journal. Usually, we only need to enter our paper's abstract and sometimes title, then the services will automatically find best matches Journals (with similarity scores, impact factors, review time, production time, open access options and fee, etc.)
http://journalfinder.elsevier.com/
http://www.sjfinder.com/
http://www.edanzediting.com/journal_selector
https://www.springer.com/gp/authors-editors/journal-author/journal-author-helpdesk/preparation/1276
Recently, my students and I tried to find the most appropriate Journal to publish their works through these finders. We tried them all. From the results that are said as the good matches, however, we found that some of those are actually irrelevant to our works.
I began questioning: What algorithm they used (basic term-document frequency counting or else)? How deep is the search (how many n-grams)? How large is the input database? Which one is the best in providing the best matches answers? How can we evaluate them? Can RG provide a good Journal Finder that is both transparent and gives good matches?
Off course, Elsevier only find Elsevier Journals, whereas Springer only find Springer Journals. But using other service, I also found one questionable (predatory) journal in the results. Could this mislead the authors instead of helping them?
Hope RG friends have some answers or information to share on these matters.