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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SYSTEMML-2160) Incorporate sparsity in lower bound costs
Date Fri, 23 Feb 2018 00:27:13 GMT
Matthias Boehm created SYSTEMML-2160:
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             Summary: Incorporate sparsity in lower bound costs
                 Key: SYSTEMML-2160
                 URL: https://issues.apache.org/jira/browse/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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