[Pandas-dev] Make the underlying data structure of a sparse dataframe an sparse matrix instead of sparse series

[Siddarth Sen]

Hi

I would like to consider the option of converting the underlying structure
of a sparse Dataframe to a sparse matrix instead of multiple sparse series
in case all the columns of the Dataframe  are of the same dtype. This will
make row/column slicing of the Dataframe much faster that what it is
currently.
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