05937422 is referenced by 255 patents and cites 7 patents.

A method of automatically generating a topical description of text by receiving the text containing input words; stemming each input word to its root form; assigning a user-definable part-of-speech score to each input word; assigning a language salience score to each input word; assigning an input-word score to each input word; creating a tree structure under each input word, where each tree structure contains the definition of the corresponding input word; assigning a definition-word score to each definition word; collapsing each tree structure to a corresponding tree-word list; assigning a tree-word-list score to each entry in each tree-word list; combining the tree-word lists into a final word list; assigning each word in the final word list a final-word-list score; and choosing the top N scoring words in the final word list as the topic description of the input text. Document searching and sorting may be accomplished by performing the method described above on each document in a database and then comparing the similarity of the resulting topical descriptions.

Title
Automatically generating a topic description for text and searching and sorting text by topic using the same
Application Number
8/834263
Publication Number
5937422
Application Date
April 15, 1997
Publication Date
August 10, 1999
Inventor
Richard Michael Bates
Greenbelt
MD, US
Patrick John Schone
Elkridge
MD, US
Douglas J Nelson
Columbia
MD, US
Agent
Robert D Morelli
Assignee
The United States of America represented by the National Security Agency
DC, US
IPC
G06F 17/30
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