spark JavaStandardScalerExample 源码
spark JavaStandardScalerExample 代码
文件路径：/examples/src/main/java/org/apache/spark/examples/ml/JavaStandardScalerExample.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.examples.ml;
import org.apache.spark.sql.SparkSession;
// $example on$
import org.apache.spark.ml.feature.StandardScaler;
import org.apache.spark.ml.feature.StandardScalerModel;
import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.Row;
// $example off$
public class JavaStandardScalerExample {
public static void main(String[] args) {
SparkSession spark = SparkSession
.builder()
.appName("JavaStandardScalerExample")
.getOrCreate();
// $example on$
Dataset<Row> dataFrame =
spark.read().format("libsvm").load("data/mllib/sample_libsvm_data.txt");
StandardScaler scaler = new StandardScaler()
.setInputCol("features")
.setOutputCol("scaledFeatures")
.setWithStd(true)
.setWithMean(false);
// Compute summary statistics by fitting the StandardScaler
StandardScalerModel scalerModel = scaler.fit(dataFrame);
// Normalize each feature to have unit standard deviation.
Dataset<Row> scaledData = scalerModel.transform(dataFrame);
scaledData.show();
// $example off$
spark.stop();
}
}
相关信息
相关文章
spark JavaAFTSurvivalRegressionExample 源码
spark JavaBisectingKMeansExample 源码
spark JavaBucketedRandomProjectionLSHExample 源码
spark JavaBucketizerExample 源码
spark JavaChiSqSelectorExample 源码
spark JavaChiSquareTestExample 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦