Perturbing latent semantic indexing spaces

A computer-based text processing method, comprising:

• (a) providing a first abstract mathematical vector space and a second abstract mathematical vector space, wherein the first abstract mathematical vector space is based on a first collection of documents and the second abstract mathematical vector space is based on a second collection of documents;
• and
• (b) merging the first abstract mathematical vector space with the second abstract mathematical vector space to produce a merged abstract mathematical vector space that is stored in an electronic format accessible to a. user, wherein merging is based on a vector averaging of vectors in the first abstract mathematical vector space with vectors in the second abstract mathematical vector space.

A computer program product comprising a computer usable medium having control logic stored therein for processing 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, or (ii) modifying the representation of a term with a newly computed representation for that term.

A computer program product comprising a computer usable medium having control logic stored therein for processing text, the control logic comprising:

• computer readable first program code that causes the computer to provide a first abstract mathematical vector space and a second abstract mathematical vector space, wherein the first abstract mathematical vector space is based on a first collection of documents and the second abstract mathematical vector space is based on a second collection of documents;
• and
• computer readable second program code that causes the computer to merge the first abstract mathematical vector space with the second abstract mathematical vector space to produce a merged abstract mathematical vector space that is stored in an electronic format accessible to a user, wherein merging is based on a vector averaging of vectors in the first abstract mathematical vector space with vectors in the second abstract mathematical vector space.