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Method and system for document retrieval with selective document comparison

  • US 9,170,990 B2
  • Filed: 03/14/2013
  • Issued: 10/27/2015
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A method executed by a computer system for providing a user a comparison output of a document embodied in at least three versions stored on the system comprising:

  • determining a first, second and third version of the document using a tree data structure representing a version hierarchy resulting from a history of revisions to the document where a first version of the document is associated with a second and a third versions of the document, each of the second and third versions being descendant versions to the first version and neither the second nor third versions being ancestor versions of each other;

    automatically making a selection of one of either the second or third version of the document based on a predetermined selection rule; and

    generating a comparison output between the first version and the selected second or third version of the document.

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