RowFeatureIndex Optimization#531
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…ndex.py Co-authored-by: Peter St. John <pstjohn@nvidia.com> Signed-off-by: polinabinder1 <pbinder@nvidia.com>
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With this PR, if an identical dataframe is appended to RowFeatureIndex as the last one it, instead of storing it, the counter corresponding to the previous dataframe is incremented. This becomes an issue in very large datasets.
Previously, if we had dataframe A corresponding to row [0,2] and we wanted to add the same dataframe A corresponding to 4 more rows, we would store dataframe A twice, with the first copy corresponding to rows [0,2] and the second to [2,6].
Now, we would store dataframe A once and it would correspond to rows [0,6].