16. The computer program product of claim 13 , wherein the computer readable second program code comprises code to cause the computer to represent a term not contained in the collection of documents in the abstract mathematical vector space prior to perturbing the abstract mathematical vector space to produce the perturbed abstract mathematical vector space.
13. A tangible computer program product comprising a computer readable storage medium having control logic stored therein for causing a computer to process text, the control logic comprising: computer readable first program code that causes the computer to generate an abstract mathematical vector space based on a collection of documents, wherein respective documents in the collection of documents have a representation in the abstract mathematical vector space and respective terms contained in the collection of documents have a representation in the abstract mathematical vector space; and computer readable second program code that causes the computer to perturb the abstract mathematical vector space to produce a perturbed abstract mathematical vector space that is stored in an electronic format accessible to a user, wherein perturbing the abstract mathematical vector space comprises at least one of (i) modifying the representation of a document with a newly computed representation for that document, and (ii) modifying the representation of a term with a newly computed representation for that term.