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Re:Directed Edge sees a post-search web where recommendation... by 10ren on Thursday August 06, 2009 @06:01AM (#745117)
They have a couple of articles on their site: http://directededge.com/tech.html
Re:Directed Edge sees a post-search web where recommendation... by rwolf on Thursday August 06, 2009 @06:03AM (#745118)
Thanks, you replied right before I was going to edit in the answer from http://developer.directededge.com/article/Introduction_to_Re...:

"Graph-based recommendation systems".

Something new to learn!

edit: the linked page mentions the book I'm reading! Looks like the answer was a few pages further in :)