ai.h2o.sparkling.ml.algos.classification.DistributionForClassificationCheck.scala Maven / Gradle / Ivy
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* http://www.apache.org/licenses/LICENSE-2.0
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package ai.h2o.sparkling.ml.algos.classification
import ai.h2o.sparkling.H2OFrame
import ai.h2o.sparkling.ml.algos.{H2OAlgoCommonUtils, ProblemType}
import org.apache.spark.sql.Dataset
trait DistributionForClassificationCheck extends H2OAlgoCommonUtils {
def getDistribution(): String
override private[sparkling] def prepareDatasetForFitting(dataset: Dataset[_]): (H2OFrame, Option[H2OFrame]) = {
val distribution = getDistribution()
val problemType = ProblemType.distributionToProblemType(distribution)
if (problemType != ProblemType.Both && problemType != ProblemType.Classification) {
throw new RuntimeException(s"Distribution '$distribution' is not supported for a classification problem.")
}
super.prepareDatasetForFitting(dataset)
}
}