Github user daniel-pape commented on a diff in the pull request:
https://github.com/apache/flink/pull/1078#discussion_r40507071
--- Diff:
flink-staging/flink-ml/src/main/scala/org/apache/flink/ml/math/SparseVector.scala
---
@@ -85,6 +85,34 @@ case class SparseVector(
}
}
+ /** Returns the outer product (a.k.a. Kronecker product) of `this`
+ * with `other`. The result is given in
[[org.apache.flink.ml.math.SparseMatrix]]
+ * representation.
+ *
+ * @param other a Vector
+ * @return the [[org.apache.flink.ml.math.SparseMatrix]] which equals
the outer product of `this`
+ * with `other.`
+ */
+ override def outer(other: Vector): SparseMatrix = {
+ val numRows = size
+ val numCols = other.size
+
+ val otherIndices = other match {
--- End diff --
Changed implementation to avoid call to SparseVector.apply. The referred
code snippet became obsolete during this.
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