Hi, There is code in systemml to “estimate” the output sparsity of a matrix multiplication operation between two sparse matrices. Is there a citation for this? If not, have we done any tests to figure out how good these estimates are? https://github.com/nakul02/systemml/blob/df8d4a63d8d09cae94b6ca2634e31da554302c72/src/main/java/org/apache/sysml/hops/OptimizerUtils.java#L944-L953
Thanks, Nakul
