We have just started with the recommendation functionality in Target. We want to use the 'Most popular' algorithm on the page, but want to exclude the articles that are already viewed by the visitor. How can we set this up in Target for recommendations? With the exclusion functionality?
Adobe Target handles this out of the box as long as you have entity.id parameter for the Target call set up on the product pages. There is also a checkbox in the criteria creation screen to allow/disallow recommendations to be previously purchased (I think). In order for purchase to populate for the user profile, an order conversion will have to take place.