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.
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I've removed the previous edit, as it doesn't appear that the second part of my question applies to the original question.