I was reading through a paper, Learning Fast Approximations of Sparse Coding (LeCunn, ICML 2010) and ran across a phrase I'm not terribly familiar with. Apologetically, I quote with very little context (though I'll link to a copy of the paper):
[a function described in the paper] is a coordinate-wise shrinking function (...)
[Postscript version (ps.gz)], and a [google-created HTML version].
The question is, what does coordinate-wise mean preferably in a general sense, not just in the context of this paper.
I've removed the previous edit, as it doesn't appear that the second part of my question applies to the original question.