Directly copy/paste from
Wikipedia. By the way people are going to research due to merit reward

. I just avoid him to report plagiarism as well he try to research.
Sorry for posting on a row, just by mistake during collect quote. Unable to delete before 24 hour's, pugman please delete it. I have save on draft & I will update on my Above post.
Nopes, This guy copied from that paper (the PDF reference in the post). Since I do not expect a research paper to be plagiarized, and both paper and wikipedia having same definition, I make assumption might be wikipedia is plagiarized.
PS: Still make me wonder how somebody looking for a simple definition find a complex research paper in which definition is in the third page of the research paper not even in the first and did he/she really read that paper to that point?