After almost 10 months, google's official Panda refresh(Google Panda 4.2) is happening. Have you noticed that?
Just found this article...Though i am not sure, but i saw a sudden change in my site, crawl rate has increased dramatically, though it has not been updated recently.. let me know your experience. https://www.seroundtable.com/google-panda-42-release-20640.html
Yes google panda 4.2 is rolling in this weekend, many of you may not have noticed because this rollout is happening incredibly slowly. In fact, Google says the update can take months to fully roll out. That means that although the Panda algorithm is still site-wide, some of your Web pages might not see a change immediately.