In consensus recommendations, the rationale for the last step is that each user will benefit from the best option according to her own preferences (Lu and Boutilier, 2011a); in this case, the “representative” of a voter is her most preferred item in S. 6,7 The latter interpretation leads to an obvious choice for defining representative items for voters: if the set of items S is chosen, then the representative item of voter i is c ∈ S if c i c for all c ∈ C \{c}. Alternatively, we say that each agent is represented by an item in S. In committee elections, this principle is the basis of the Chamberlin and Courant multiwinner election scheme (discussed later)