Matthias Boehm created SYSTEMML-1663:
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Summary: New simplification rewrite for binary multiplication
chains
Key: SYSTEMML-1663
URL: https://issues.apache.org/jira/browse/SYSTEMML-1663
Project: SystemML
Issue Type: Sub-task
Reporter: Matthias Boehm
There are various scripts that use chains of binary element-wise
multiplications such as {{A * B * B}} or {{B * A * B}}, which are currently
compiled to {{(A * B) * B}} and {{(B * A) * B}}, respectively. We should
explicitly reason about and simply this to expose the unary operation {{B^2}}
which can be evaluated much more efficiently, in case of both singlenode and
distributed operations.
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