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Java - Code Samples

 Sample 1. Code Sample / Example / Snippet of org.apache.spark.ml.feature.StandardScaler

  public static void main(String[] args) {

SparkConf conf = new SparkConf().setAppName("JavaStandardScalerExample");

JavaSparkContext jsc = new JavaSparkContext(conf);

SQLContext jsql = new SQLContext(jsc);



DataFrame dataFrame = jsql.read().format("libsvm").load("data/mllib/sample_libsvm_data.txt");



StandardScaler scaler = new StandardScaler()

.setInputCol("features")

.setOutputCol("scaledFeatures")

.setWithStd(true)

.setWithMean(false);



StandardScalerModel scalerModel = scaler.fit(dataFrame);



DataFrame scaledData = scalerModel.transform(dataFrame);

scaledData.show();

jsc.stop();

}


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