14. The method according to claim 9 , further comprising: providing a compass within which one or more of the clusters organized along the spines are displayed on a display; displaying different one or more of the clusters in the compass upon receiving a user command, wherein the clusters are emphasized when displayed within the compass and deemphasized when displayed outside of the compass.
14. The method according to claim 9 , further comprising: providing a compass within which one or more of the clusters organized along the spines are displayed on a display; displaying different one or more of the clusters in the compass upon receiving a user command, wherein the clusters are emphasized when displayed within the compass and deemphasized when displayed outside of the compass. 15. The method according to claim 14 , further comprising: associating a label with each of the spines, each label associated with one or more concepts from the documents in the clusters along that spine; and displaying the labels circumferentially outside of the compass, wherein the displayed labels do not overlap.