zenogantner/MyMediaLite — Issue #167: Correlations: make sparse storage an option
Author: zenogantner
Created: 2011-12-05 15:19:16+00:00
State: open
Labels: enhancement

Depending on the dataset and the exact measure, correlation matrices may be sparse, that is, contain many zero entries.

The user/programmer should be able to switch between dense and sparse memory representations.

Our homemade sparse matrix implementation is not the most efficient, by the way.
We should find a more efficient one.