资 源 简 介
PURPOSE
This is a set of algorithms implemented in Java. The goal of these
algorithms is to minimize the number of column runs, to improve
run-length encoding compression in database tables.
IS THIS FOR YOU?
This library is strictly for researchers with a working knowledge of
Java who are interested in studying our implementation.
For a simple Java demo of the Vortex order described in one of our paper, please see https://github.com/lemire/SimpleVortex
REFERENCES
Daniel Lemire and Owen Kaser, Reordering Columns for Smaller Indexes http://arxiv.org/abs/0909.1346
Daniel Lemire, Owen Kaser, Eduardo Gutarra, Reordering Rows for Better Compression: Beyond the Lexicographic Order, to appear ACM Transactions on Database Systems. http://arxiv.org/abs/1207.2189
USAGE
We expect CSV input files (comma-separated values). They must be
first tr
