15. A method according to claim 14 , further comprising: identifying the clusters along a common vector as having a similar theme.
15. A method according to claim 14 , further comprising: identifying the clusters along a common vector as having a similar theme. 16. A method according to claim 15 , further comprising: designating the clusters along the common vector as having a theme similar to those clusters located along other vectors positioned at a small cosign rotation from the common vector.