Custom search - Yacy

Hello. Is it possibile when I do a file search to include just certain providers?
I don’t need Wikipedia and other sites, I need only certain site, like Research gate.

You can use filters like the host navigation or the collection feature.
However I believe that the special file search interface does not have navigation buttons? You can still use query attributes to apply filters. In your case it would need negative filters like
“-host:www.researchgate.net”. I hope that works…