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Computer information retrieval using latent semantic structure

  • US 4,839,853 A
  • Filed: 09/15/1988
  • Issued: 06/13/1989
  • Est. Priority Date: 09/15/1988
  • Status: Expired due to Term
First Claim
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1. An information retrieval method comprising the steps ofgenerating term-by-data object matrix data to represent information files stored in a computer system, said matrix data being indicative of the frequency of occurrence of selected terms contained in the data objects stored in the information files,decomposing said matrix into a reduced singular value representation composed of distinct term and data object files,in response to a user query, generating a pseudo-object utilizing said selected terms and inserting said pseudo-object into said matrix data, andexamining the similarity between said pseudo-object and said term and data object files to generate an information response and storing said response in the system in a form accessible by the user.

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