Github user yu-iskw commented on the pull request:
https://github.com/apache/spark/pull/1964#issuecomment-53347789
Hi @erikerlandson,
Thank you for your comment.
I use breeze.numerics.abs instead of Math.abs.
I tried to check the performance of both again. That of breeze.vector.abs
is better than Math.abs.
https://gist.github.com/yu-iskw/aa56aad7481c4b45192c
Mean of 100 times(breeze.numerics.abs): 964.64
Mean of 100 times(breeze.Math.abs): 1029.46
And, let me clarify my understanding.
As commented previously, I can't compile my code, using abs(vector) in
breeze.numerics.
Does Breeze library have abs() method for a vector?
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