Regression tree generation method and apparatus therefor

Details Regression tree generation method and apparatus therefor Regression tree generation method and apparatus therefor

1998-04-02

2000-11-14

Amsbury, Wayne

Data processing: database and file management or data structures

Database design

Data structure types

G06F 1730

Patent

active

061483036

ABSTRACT:
To generate a more preferable regression tree by using two predicative numeric attributes as a rule for splitting. For N.times.M buckets of a plane that has two axes corresponding to two predicative numeric attributes of data in a database, which belongs to one node of a regression tree, the number u(i, j) of data, belonging to a bucket (coordinate (i, j)), and sum v(i, j) of an objective numeric attribute value of data belonging to the bucket are stored. A bucket region which maximizes the interclass variance is segmented from the plane. Nodes are prepared for the data included in the extracted bucket region and for data outside the bucket region.

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