Relax deformer equivalent?

[David Gallagher]

I'm putting a relax deformer on a characters upper arm/shoulder 
connection to make it smoother.

I'm looking for a similar deformer in Maya, but not finding a good one.
polyAverageVertex1 I suppose?
http://www.mediafire.com/view/32xn8diu6u77cju/relaxDeformer.png#