1_modules_fraud_model.scala

/*Scala classes needed to transform data and implement the estimation procedure for the classification statistical methods
using the stage-defined pipeline model.*/
import org.apache.spark.ml.feature.{VectorAssembler}
import org.apache.spark.ml.Pipeline
import org.apache.spark.ml.classification.{DecisionTreeClassifier, GBTClassifier, RandomForestClassifier, NaiveBayes, LogisticRegression}
import org.apache.spark.ml.evaluation.BinaryClassificationEvaluator
import org.apache.spark.ml.tuning.{CrossValidator, CrossValidatorModel, ParamGridBuilder}