Method for creating sketches of sets to permit comparison

Details Method for creating sketches of sets to permit comparison Method for creating sketches of sets to permit comparison

2006-10-31

2010-02-23

Breene, John E (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C713S150000

Reexamination Certificate

active

07668852

ABSTRACT:
Provided is a method for creating sketches of sets to permit comparing set members selected from a universe. The method includes selecting a size for the sketch and providing a randomizer. In addition, a set is provided as a subset of the universe. The set is processed with the randomizer to provide a new vector. The new vector is normalized to provide a value. Dividing each element of the new vector by the determined value results in the sketch.

REFERENCES:
patent: 6470329 (2002-10-01), Livschitz
patent: 6839714 (2005-01-01), Wheeler et al.
patent: 2003/0081770 (2003-05-01), Futa et al.
patent: 2006/0193490 (2006-08-01), Srinivasan et al.
patent: WO 2005043808 (2005-04-01), None

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