I don't understand this 2 lines. Why you choose 2 different columns to calculate precision and recall

[nhathuy13598]

CS5590_BigDataProgramming/Lab/Lab4/Source/DecisionTree.py

Lines 58 to 59 in c3ab6a5

	y_true = data.select("BMI").rdd.flatMap(lambda x: x).collect()
	y_pred = data.select("ROA").rdd.flatMap(lambda x: x).collect()