Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
1997-06-13
2001-02-06
Breene, John (Department: 2777)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C707S793000, C707S793000, C707S793000, C707S960000
Reexamination Certificate
active
06185550
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The embodiments of the present invention relate to a method and apparatus for classification of documents within defined categories using a class hierarchy having document categories and corresponding category definitions. More particularly, the embodiments of the present invention relate to a method and apparatus for comparing a document to be classified to the category definitions to determine appropriate category classification for the document and classifying the document within the appropriate category or categories.
2. Background of the Invention
Libraries and other institutions have historically categorized documents by hand. Furthermore, information retrieval systems exist which provide documents for automated retrieval. For example, Yahoo!®, an information storage and retrieval system available to Internet users at http://www.yahoo.com, allows a user to search for information according to various search terms.
Yahoo!® allows a user to classify a document within various categories. However, Yahoo!® requires a user to determine appropriate classification for each document prior to classifying the document. In today's computerized society, it would be extremely beneficial to provide a means for automating this process of document categorization. A need exists in the prior art for an automated document classification system for categorizing a document based upon the content of the document.
BRIEF DESCRIPTION OF THE INVENTION
A method and apparatus for classification of documents based on content within a class hierarchy is provided. The class hierarchy comprises a plurality of category nodes stored within a tree data structure. Each of the plurality of category nodes includes a category name corresponding to a unique directly and a category definition comprising a set of defining terms. In accordance with the invention, the class hierarchy is searched to determine appropriate categories for classification of the document. The document is stored in directories corresponding to the categories selected for classification. If no categories are produced by the search, a system administrator is notified of the unsuccessful search.
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Mocker Joseph D.
Snow William A.
Breene John
Channavajjala Srirama
D'Alessandro & Ritchie
Sun Microsystems Inc.
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