Repository: spark Updated Branches: refs/heads/master 774099670 -> 1ad04dae0
http://git-wip-us.apache.org/repos/asf/spark/blob/1ad04dae/mllib/src/main/scala/org/apache/spark/mllib/linalg/Vectors.scala ---------------------------------------------------------------------- diff --git a/mllib/src/main/scala/org/apache/spark/mllib/linalg/Vectors.scala b/mllib/src/main/scala/org/apache/spark/mllib/linalg/Vectors.scala index 188d1e5..f6bcdf8 100644 --- a/mllib/src/main/scala/org/apache/spark/mllib/linalg/Vectors.scala +++ b/mllib/src/main/scala/org/apache/spark/mllib/linalg/Vectors.scala @@ -587,6 +587,28 @@ class DenseVector(val values: Array[Double]) extends Vector { } new SparseVector(size, ii, vv) } + + /** + * Find the index of a maximal element. Returns the first maximal element in case of a tie. + * Returns -1 if vector has length 0. + */ + private[spark] def argmax: Int = { + if (size == 0) { + -1 + } else { + var maxIdx = 0 + var maxValue = values(0) + var i = 1 + while (i < size) { + if (values(i) > maxValue) { + maxIdx = i + maxValue = values(i) + } + i += 1 + } + maxIdx + } + } } object DenseVector { --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
