Fig. 2From: Online social image ranking in diversified preferencesIllustration of position-sensitive rank aggregation. Given a set of ranking lists ordered in columns, the list in red color denotes the semantic ranking result, and the list in blue color denotes the preference ranking lists. A preference matrix is generated according to the weights of each ranking list and the position of each document. Then, a Quicksort algorithm is employed to calculate the final ranking list, which is denoted by the list in purple colorBack to article page