The paper presents a survey of the field of recommender systems anddescribes current recommendation methods that are usually classified into thefollowing three main categories: content-based, collaborative, and hybridrecommendation approaches. The paper also describes various limitations...

An approach to defining actionability as a measure ofinterestingness of patterns is proposed. This approachis based on the concept of an action hierarchy whichis defined as a tree of actions with patterns and patterntemplates (data mining queries) assigned to itsnodes. A method for discovering...

The paper presents a survey of the field of recommender systems anddescribes current recommendation methods that are usually classified into thefollowing three main categories: content-based, collaborative, and hybridrecommendation approaches. The paper also describes various limitations...

We study the problem of consumer acquisition in recommender systems, by considering a marketplace where a recommender system provider offers personalized incentives to encourage consumer participation. We investigate a model of consumer acquisition that accounts for several key market dynamics,...

Despite known advantages of combinatorial auctions, wide adoption of this allocation mechanism, especially in consumer-oriented marketplaces, is limited partially by the lack of effective bidder support information that can assist bidders to make bidding decisions. In this paper, we study the...