# 분류 from pyspark.ml.classification import DecisionTreeClassifier from pyspark.ml.evaluation import BinaryClassificationEvaluator from pyspark.ml.feature import StringIndexer from pyspark.ml.feature import VectorAssembler from pyspark.ml.pipeline import Pipeline from pyspark.sql import SparkSession from pyspark.sql import functions spark = SparkSession \ .builder \ .appName("classfication_sample..