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Bottom-Up Cubing Algorithm in Java
Java
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BottomUpCubingAlgorithm.java
ColumnComparator.java
CubeTests.java
CubingAlgorithm.java
Dataset.java
LICENSE
Measure.java
README.md
ResultCollector.java
Util.java

README.md

Cubist

Implementation of Bottom-Up Cubing Algorithm for Iceberg Cubes, Beyer et al, SIGMOD 99.

Assumes Measure is monotonically increasing i.e. M(A union B) >= M(A)

Successively sort and partition data by columns, aborting sort if partition's aggregate doesn't meet threshold, since it's sub-partitions will apriori not meet threshold either.

License

3-clause BSD.

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