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Apparatus, method, and program for retrieving structured documents

  • US 6,889,223 B2
  • Filed: 03/28/2002
  • Issued: 05/03/2005
  • Est. Priority Date: 03/30/2001
  • Status: Expired due to Term
First Claim
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1. A computer program stored on a computer readable medium, and instructing the computer to retrieve structured documents from a structured-documents-database having a hierarchical structure and storing a plurality of structured documents each having a document structure and a plurality of data items, each of the document structures being constructed by a plurality of components, each of the component constructing the hierarchical structure, and each of the data items being stored in the structured-documents-database as a value included in one of the components, the computer program comprising:

  • first program instruction means for instructing a computer processor to receive at least one retrieval condition including at least one first desired word, and at least one first desired component including a value in which the first desired word is included;

    second program instruction means for instructing a computer processor to detect a plurality of second desired components each being similar to the first desired component, in the hierarchical structure;

    third program instruction means for instructing a computer processor to acquire a plurality of second desired words each being similar to the first desired word;

    fourth program instruction means for instructing a computer processor to retrieve a plurality of first structured documents each including at least one first component including a value in which at least one of the first desired word and the second desired words is included, from the structured-document-database; and

    fifth program instruction means for instructing a computer processor to retrieve a plurality of second structured documents each including a second component corresponding to one of the first desired component and the second desired components and including or corresponding to the first component, from the first structured documents.

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