spark JavaAssociationRulesExample 源码

2022-10-20
浏览 (257)

spark JavaAssociationRulesExample 代码

文件路径：/examples/src/main/java/org/apache/spark/examples/mllib/JavaAssociationRulesExample.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.mllib;

// $example on$
import java.util.Arrays;

import org.apache.spark.api.java.JavaRDD;
import org.apache.spark.api.java.JavaSparkContext;
import org.apache.spark.mllib.fpm.AssociationRules;
import org.apache.spark.mllib.fpm.FPGrowth;
import org.apache.spark.mllib.fpm.FPGrowth.FreqItemset;
// $example off$

import org.apache.spark.SparkConf;

public class JavaAssociationRulesExample {

  public static void main(String[] args) {

    SparkConf sparkConf = new SparkConf().setAppName("JavaAssociationRulesExample");
    JavaSparkContext sc = new JavaSparkContext(sparkConf);

    // $example on$
    JavaRDD<FPGrowth.FreqItemset<String>> freqItemsets = sc.parallelize(Arrays.asList(
      new FreqItemset<>(new String[] {"a"}, 15L),
      new FreqItemset<>(new String[] {"b"}, 35L),
      new FreqItemset<>(new String[] {"a", "b"}, 12L)
    ));

    AssociationRules arules = new AssociationRules()
      .setMinConfidence(0.8);
    JavaRDD<AssociationRules.Rule<String>> results = arules.run(freqItemsets);

    for (AssociationRules.Rule<String> rule : results.collect()) {
      System.out.println(
        rule.javaAntecedent() + " => " + rule.javaConsequent() + ", " + rule.confidence());
    }
    // $example off$

    sc.stop();
  }
}

相关信息

spark 源码目录

相关文章

spark JavaALS 源码

spark JavaBinaryClassificationMetricsExample 源码

spark JavaBisectingKMeansExample 源码

spark JavaChiSqSelectorExample 源码

spark JavaCorrelationsExample 源码

spark JavaDecisionTreeClassificationExample 源码

spark JavaDecisionTreeRegressionExample 源码

spark JavaElementwiseProductExample 源码

spark JavaGaussianMixtureExample 源码

spark JavaGradientBoostingClassificationExample 源码

0 赞

所属分类： 前端技术
本文标签： 大数据
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/f709ca95ff2c4493a2c046e94d169b93

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
6、 harmony 鸿蒙初识ArkTS语言
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...