http://www.dubberly.com/concept-maps
I rememeber years ago I came across a report produced by Debberly Design Office (ddo) on design process and was impressed by the nice way they articulated the evolving complexity embedded in different proposals of design process.
Guess now I am off to have a close look at all these diagrams - have to say as an information architect I love diagrams ;-)
By the way, this one is my favourite - was looking for something that present a rather distributed pattern for design process, and it's there~ right there~
image from Dubberly Design Office website, access via http://www.dubberly.com/concept-maps/creative-process.html