Matthias Boehm created SYSTEMML-2160:

             Summary: Incorporate sparsity in lower bound costs
                 Key: SYSTEMML-2160
             Project: SystemML
          Issue Type: Sub-task
            Reporter: Matthias Boehm

So far, the codegen optimizer computes the lower bound costs for cost-based 
pruning without proper awareness of sparsity exploiting operators. This led to 
suboptimal plans because sub areas of the search space are pruned too eagerly.

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