11. The system of claim 9 , wherein a weighted edge connecting a pair of nodes has a weight that is indicative of a number of sequential selections of images represented by the pair of nodes.
11. The system of claim 9 , wherein a weighted edge connecting a pair of nodes has a weight that is indicative of a number of sequential selections of images represented by the pair of nodes. 12. The system of claim 11 , wherein each weighted edge has directional components indicating a source image and a destination image, the source image being an image that was selected for presentation prior to the destination image being selected for presentation.