Re: Grid search with Random Forest

You can do grid search if you set the evaluator to a MulticlassClassificationEvaluator, which expects a prediction column, not a rawPrediction column. There's a JIRA for making BinaryClassificationEvaluator accept prediction instead of rawPrediction. Joseph On Tue, Dec 1, 2015 at 5:10 AM,

Re: Grid search with Random Forest

Thanks for the clarification. Gonna test that and give you feedbacks. Ndjido On Tue, 1 Dec 2015 at 19:29, Joseph Bradley wrote: > You can do grid search if you set the evaluator to a > MulticlassClassificationEvaluator, which expects a prediction column, not a >

Re: Grid search with Random Forest

It should work with 1.5+. On Thu, Nov 26, 2015 at 12:53 PM, Ndjido Ardo Bar wrote: > > Hi folks, > > Does anyone know whether the Grid Search capability is enabled since the > issue spark-9011 of version 1.4.0 ? I'm getting the "rawPredictionCol > column doesn't exist" when

Re: Grid search with Random Forest

Hi Joseph, Yes Random Forest support Grid Search on Spark 1.5.+ . But I'm getting a "rawPredictionCol field does not exist exception" on Spark 1.5.2 for Gradient Boosting Trees classifier. Ardo On Tue, 1 Dec 2015 at 01:34, Joseph Bradley wrote: > It should work with

Re: Grid search with Random Forest

Hi Ndjido, This is because GBTClassifier doesn't yet have a rawPredictionCol like the. RandomForestClassifier has. Cf: http://spark.apache.org/docs/latest/ml-ensembles.html#output-columns-predictions-1 On 1 Dec 2015 3:57 a.m., "Ndjido Ardo BAR" wrote: > Hi Joseph, > > Yes

Re: Grid search with Random Forest

Hi Benjamin, Thanks, the documentation you sent is clear. Is there any other way to perform a Grid Search with GBT? Ndjido On Tue, 1 Dec 2015 at 08:32, Benjamin Fradet wrote: > Hi Ndjido, > > This is because GBTClassifier doesn't yet have a rawPredictionCol like >