Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/16344#discussion_r93453273
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
---
@@ -303,14 +341,15 @@ object GeneralizedLinearRegression extends
DefaultParamsReadable[GeneralizedLine
/** Set of family and link pairs that GeneralizedLinearRegression
supports. */
private[regression] lazy val supportedFamilyAndLinkPairs = Set(
- Gaussian -> Identity, Gaussian -> Log, Gaussian -> Inverse,
- Binomial -> Logit, Binomial -> Probit, Binomial -> CLogLog,
- Poisson -> Log, Poisson -> Identity, Poisson -> Sqrt,
- Gamma -> Inverse, Gamma -> Identity, Gamma -> Log
+ "gaussian" -> Identity, "gaussian" -> Log, "gaussian" -> Inverse,
--- End diff --
String is error-prone, I think we can construct a member object for
```Tweedie``` whose ```variancePower``` is the default value(1.5).
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