A message from our CEO about the future of Stack Overflow and Stack Exchange. Read now.
1

How about March 1999 - US Patent 7,962,367 "As shown in FIG. 4 the present invention may include, but does not have to include, a user preference monitoring program." "The preferences may comprise a list of the type of products that the user has purchased and the frequency of those purchases." "For example, a user that has a preference for company X's ...


1

The term "aggregating preferences" comes to mind., e.g., http://www.cse.unsw.edu.au/~tw/prvwjlc08.pdf


1

This book was published in 2007: http://shop.oreilly.com/product/9780596529321.do Chapter 2 seems to cover much of this patent, specifically Collecting Preferences, finding similar uses, recommending items and matching products


Only top voted, non community-wiki answers of a minimum length are eligible