There is a JIRA and PR around for supporting polynomial expansion with degree 1. Offhand I can't recall if it's been merged On Mon, 2 May 2016 at 17:45, Julio Antonio Soto de Vicente <ju...@esbet.es> wrote:
> Hi, > > Same goes for the PolynomialExpansion in org.apache.spark.ml.feature. It > would be dice to cross-validate with degree 1 polynomial expansion (this > is, with no expansion at all) vs other degree polynomial expansions. > Unfortunately, degree is forced to be >= 2. > > -- > Julio > > > El 2 may 2016, a las 9:05, Rahul Tanwani <tanwanira...@gmail.com> > escribió: > > > > Hi, > > > > In certain cases (mostly due to time constraints), we need some model to > run > > without cross validation. In such a case, since k-fold value for cross > > validator cannot be one, we have to maintain two different code paths to > > achieve both the scenarios (with and without cross validation). > > > > Would it be an okay idea to generalize the cross validator so it can work > > with k-fold value of 1? The only purpose for this is to avoid maintaining > > two different code paths and in functionality it should be similar to as > if > > the cross validation is not present. > > > > > > > > > > > > -- > > View this message in context: > http://apache-spark-developers-list.1001551.n3.nabble.com/Cross-Validator-to-work-with-K-Fold-value-of-1-tp17404.html > > Sent from the Apache Spark Developers List mailing list archive at > Nabble.com. > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: dev-unsubscr...@spark.apache.org > > For additional commands, e-mail: dev-h...@spark.apache.org > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@spark.apache.org > For additional commands, e-mail: dev-h...@spark.apache.org > >
