Patrick Pisciuneri created SPARK-29121:
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Summary: Support Dot Product for Vectors
Key: SPARK-29121
URL: https://issues.apache.org/jira/browse/SPARK-29121
Project: Spark
Issue Type: Improvement
Components: ML, MLlib
Affects Versions: 2.3.5, 2.4.5, 3.0.0
Reporter: Patrick Pisciuneri
Fix For: 3.0.0
I believe *org.apache.spark.ml.linalg.Vectors* and
*org.apache.spark.mllib.linalg.Vectors* should support the dot product. The
necessary BLAS routines are already there, just a simple wrapper is needed.
I know there has been a lot of discussion about how much of a linear algebra
package should spark attempt to be, but I have found that the dot product comes
up quite a bit for feature engineering and scoring. In the past we have
created our own *org.apache.spark.ml.linalg* package to expose the private
methods, but it's an annoying hack.
See also:
SPARK-6442
SPARK-10989
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