Hanify & King, P.C.
System and method for building decision tree classifiers using bitmap techniques
A method, system, and computer program product for counting predictor-target pairs for a decision tree model provides the capability to generate count tables that is quicker and more efficient than previous techniques. A method of counting predictor-target pairs for a decision tree model, the decision tree model based on data stored in a database, the data comprising a plurality of rows of data, at least one predictor and at least one target, comprises generating a bitmap for each split node of data stored in a database system by intersecting a parent node bitmap and a bitmap of a predictor that satisfies a condition of the node, intersecting each split node bitmap with each predictor bitmap and with each target bitmap to form intersected bitmaps, and counting bits of each intersected bitmap to generate a count of predictor-target pairs.
Oracle International Corporation
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Y10S Y10S G06F
additional additional inventional
Shiby Joseph Mahesh Ari W. Wei
Thomas Yarmus Jagannath Mozes Li