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https://issues.apache.org/jira/browse/SYSTEMML-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-2160.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 1.1
> 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
> Assignee: Matthias Boehm
> Priority: Major
> Fix For: SystemML 1.1
>
>
> 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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