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Databricks Certified Machine Learning Associate100 / 137
Question 100 of 137
A data scientist is tuning a Spark ML regression pipeline that predicts house prices. They use CrossValidator with a ParamGridBuilder over regParam and elasticNetParam for a LinearRegression stage. They want the cross-validation to select the parameter combination that minimizes the average prediction error magnitude across folds. Which evaluator configuration should they pass to CrossValidator?
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