[SPARK-8525] [MLLIB] fix LabeledPoint parser when there is a whitespace between label and features vector
fix LabeledPoint parser when there is a whitespace between label and features vector, e.g.
(y, [x1, x2, x3])
Author: Oleksiy Dyagilev <oleksiy_dyagilev@epam.com>
Closes #6954 from fe2s/SPARK-8525 and squashes the following commits:
0755b9d [Oleksiy Dyagilev] [SPARK-8525][MLLIB] addressing comment, removing dep on commons-lang
c1abc2b [Oleksiy Dyagilev] [SPARK-8525][MLLIB] fix LabeledPoint parser when there is a whitespace on specific position
(cherry picked from commit a8031183af
)
Signed-off-by: Xiangrui Meng <meng@databricks.com>
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parent
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@ -98,6 +98,8 @@ private[mllib] object NumericParser {
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}
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} else if (token == ")") {
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parsing = false
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} else if (token.trim.isEmpty){
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// ignore whitespaces between delim chars, e.g. ", ["
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} else {
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// expecting a number
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items.append(parseDouble(token))
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@ -31,6 +31,11 @@ class LabeledPointSuite extends SparkFunSuite {
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}
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}
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test("parse labeled points with whitespaces") {
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val point = LabeledPoint.parse("(0.0, [1.0, 2.0])")
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assert(point === LabeledPoint(0.0, Vectors.dense(1.0, 2.0)))
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}
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test("parse labeled points with v0.9 format") {
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val point = LabeledPoint.parse("1.0,1.0 0.0 -2.0")
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assert(point === LabeledPoint(1.0, Vectors.dense(1.0, 0.0, -2.0)))
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@ -37,4 +37,11 @@ class NumericParserSuite extends SparkFunSuite {
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}
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}
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}
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test("parser with whitespaces") {
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val s = "(0.0, [1.0, 2.0])"
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val parsed = NumericParser.parse(s).asInstanceOf[Seq[_]]
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assert(parsed(0).asInstanceOf[Double] === 0.0)
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assert(parsed(1).asInstanceOf[Array[Double]] === Array(1.0, 2.0))
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}
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}
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