Method and apparatus for deriving association rules from data an

Details Method and apparatus for deriving association rules from data an Method and apparatus for deriving association rules from data an

1998-02-18

1999-11-23

Kulik, Paul V.

Data processing: database and file management or data structures

Database design

Data structure types

707 3, 707 6, G06F 1730

Patent

active

059917520

ABSTRACT:
The present application discloses a method and apparatus for extracting association rules from data having two or more numeric attributes and a true-false attribute, and for presenting the rules in an easily understandable form. The method comprises the steps of: (i) storing numbers u(i,j) and v(i,j) of data in each pixel whose true-false attribute is true, so as to correspond to each pixel in a plane; (ii) inputting a condition .theta.; (iii) segmenting from the plane a rectilinear region S of the pixels to maximize the equation ##EQU1## ;and (iv) outputting data included in the segmented rectilinear region S. The invention also allows regions to be derived which satisfy a desired support maximization rule, confidence maximization rule, optimized entropy rule, and optimized interclass variance rule.

REFERENCES:
patent: 5724573 (1998-03-01), Agrawal et al.
patent: 5812997 (1998-09-01), Morimoto et al.
patent: 5870748 (1999-02-01), Morimoto et al.

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