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[SPARK-19155][ML] Make family case insensitive in GLM#16675

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actuaryzhang wants to merge 3 commits into from
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[SPARK-19155][ML] Make family case insensitive in GLM #16675

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d33e2f1
make getFamily case insensitive
actuaryzhang Jan 23, 2017
c2b4132
update binomial test
actuaryzhang Jan 23, 2017
97b0a1c
revert value of getFamily and convert its value to lower case in subs…
actuaryzhang Jan 23, 2017
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6 changes: 4 additions & 2 deletions mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
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Original file line numberDiff line numberDiff line change
Expand Up@@ -1044,7 +1044,8 @@ class GeneralizedLinearRegressionSummary private[regression] (
*/
@Since("2.0.0")
lazy val dispersion: Double = if (
model.getFamily == Binomial.name || model.getFamily == Poisson.name) {
model.getFamily.toLowerCase == Binomial.name ||
model.getFamily.toLowerCase == Poisson.name) {
1.0
} else {
val rss = pearsonResiduals.agg(sum(pow(col("pearsonResiduals"), 2.0))).first().getDouble(0)
Expand DownExpand Up@@ -1147,7 +1148,8 @@ class GeneralizedLinearRegressionTrainingSummary private[regression] (
@Since("2.0.0")
lazy val pValues: Array[Double] = {
if (isNormalSolver) {
if (model.getFamily == Binomial.name || model.getFamily == Poisson.name) {
if (model.getFamily.toLowerCase == Binomial.name ||
model.getFamily.toLowerCase == Poisson.name) {
tValues.map { x => 2.0 * (1.0 - dist.Gaussian(0.0, 1.0).cdf(math.abs(x))) }
} else {
tValues.map { x =>
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4 changes: 2 additions & 2 deletions mllib/src/test/scala/org/apache/spark/ml/regression/GeneralizedLinearRegressionSuite.scala
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Expand Up@@ -758,7 +758,7 @@ class GeneralizedLinearRegressionSuite
0.028480 0.069123 0.935495 -0.049613
*/
val trainer = new GeneralizedLinearRegression()
.setFamily("binomial")
.setFamily("Binomial")
.setWeightCol("weight")
.setFitIntercept(false)

Expand DownExpand Up@@ -875,7 +875,7 @@ class GeneralizedLinearRegressionSuite
-0.4378554 0.2189277 0.1459518 -0.1094638
*/
val trainer = new GeneralizedLinearRegression()
.setFamily("poisson")
.setFamily("Poisson")
.setWeightCol("weight")
.setFitIntercept(true)

Expand Down