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Object oriented information retrieval framework mechanism

  • US 5,778,378 A
  • Filed: 04/30/1996
  • Issued: 07/07/1998
  • Est. Priority Date: 04/30/1996
  • Status: Expired due to Fees
First Claim
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1. A computer system comprising:

  • a central processing unit;

    a user interface; and

    a main memory having an operating system that supports an object oriented programming environment containing a framework that provides an extensible information retrieval system that operates on documents stored in the computer system, the framework including;

    index class objects having word index objects that map words contained in the stored documents to the documents that contain the words;

    a build index object that responds to a user build index request by processing a stored document and creating the word index objects such that they contain the document word mapping and document-related information produced by a preprocessing operation;

    a posting list class of objects that are pointed to by the word index objects and contain a frequency count that indicates the number of times a word appears in a word index object of a document;

    a document table class of objects that map a word index object to the indexed document from which it was preprocessed; and

    a query index object that processes a user query so as to produce a query result from comparison of the user query and the word index objects in response to a user query;

    wherein the query result identifies stored documents relevant to the user query.

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