嗨,我正在试着运行simplekmeanclustering代码,从github来看看集群是如何工作的,我能够在我的windows eclipse上编译代码。
我为我的项目制作了一个jar,我想在一个单节点hadoop集群(chd-4.2.1)上运行它,并在其上安装mahout。mahout示例在这个集群上运行良好,因此没有安装问题。
我在command promt中使用下面的命令来运行我的jar,我不确定我的尝试是否正确。
user@infph01463u用法:~$mahout jar/home/user/apurv/kmean.jar tryout.simplekmeansclustering
我得到了相应的错误
未设置mahout\u local;正在将hadoop\ conf\ dir添加到类路径。在hadoop上运行,使用/usr/lib/hadoop/bin/hadoop和hadoop\u conf\u dir=/etc/hadoop/conf mahout job:/usr/lib/mahout/mahout-examples-0.7-cdh4.3.0-job.jar 13/06/06 14:42:18警告driver.mahoutdriver:无法添加类:jar java.lang.classnotfoundexception:jar at java.net.urlclassloader$1.run(urlclassloader)。java:202)在java.net.urlclassloader.findclass(urlclassloader)中的java.security.accesscontroller.doprivileged(本机方法)。java:190)在java.lang.classloader.loadclass(classloader。java:306)在java.lang.classloader.loadclass(classloader。java:247)在java.lang.class.forname0(本机方法)在java.lang.class.forname(类。java:169)在org.apache.mahout.driver.mahoutdriver.addclass(mahoutdriver。java:236)在org.apache.mahout.driver.mahoutdriver.main(mahoutdriver。java:128)在sun.reflect.nativemethodaccessorimpl.invoke0(本机方法)在sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl)。java:39)在sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl。java:25)在java.lang.reflect.method.invoke(方法。java:597)在org.apache.hadoop.util.runjar.main(runjar。java:208)13/06/06 14:42:18 warn driver.mahoutdriver:在类路径上找不到jar.props,将使用命令行参数仅选择未知程序“jar”。有效的程序名是:arff.vector::generate vectors from a arff file or directory baumwelch::baum welch algorithm for unsupervised hmm training canopy::canopy clustering cat::打印logistic回归模型将看到的文件或资源
cleansvd::svd output clusterdump::dump cluster output to text clusterpp::groups clustering output in clusters cmdump::dump html或文本格式的混淆矩阵的清理和验证
cvb::lda通过折叠的变异贝叶斯(第0阶导数)。近似值)
cvb0\u local::lda通过折叠的变异贝叶斯,在内存中本地执行。
dirichlet::dirichlet聚类eigencuts::eigencuts谱聚类evaluatefactorization::计算评级矩阵因式分解的rmse和mae fkmeans::模糊k均值聚类fpg::频繁模式增长hmm预测::根据给定的hmm项生成随机观察序列相似度::计算基于项目的协同过滤的项目相似性kmeans::k-means clustering lucene.vector::从lucene索引矩阵dump::csv格式的dump矩阵生成向量matrixmult::取两个矩阵的乘积meanshift::meanshift clustering minhash::run minhash clustering parallels::als wr factoriation of a ratingmatrix recommendfactorized::使用评级矩阵的因式分解计算建议
recommenditembased::使用基于项目的协作筛选计算建议regexconverter::基于正则表达式按行转换文本文件rowid::将sequencefileMap到{sequencefile,sequencefile}行相似度::计算矩阵行的成对相似度runadaptivelogistic::使用可能经过训练和验证的AdaptiveLogistic回归模型为新生产数据打分runlogistic::针对csv数据运行logistic回归模型seq2encoded::从文本序列文件生成编码的稀疏向量seq2sparse::从文本序列文件生成稀疏向量seqdirectory::从目录生成序列文件seqdumper::通用序列文件dumper seqmailarchives::从包含gzip邮件存档的目录创建序列文件seqwiki::wikipedia xml转储到序列文件spectralkmeans::spectral k-means聚类拆分::将输入数据拆分为测试集和训练集拆分数据集::将评级数据集拆分为训练和探测部分ssvd::随机svd svd::lanczos奇异值分解测试NB::测试基于向量的贝叶斯分类器trainadaptivelogistic::训练自适应回归模型trainlogistic::训练logistic使用随机梯度下降的回归trainnb::训练基于向量的贝叶斯分类器转置::对矩阵进行转置validateadaptivelogistic::根据保持数据集vecdist::计算一组向量(或簇或树冠)之间的距离,它们必须适合内存)和向量列表vectordump::将序列文件中的向量转储到文本viterbi::viterbi解码给定输出状态的隐藏状态序列13/06/06 14:42:18 info driver.mahoutdriver:程序耗时2毫秒(分钟:3.3335E-5)
下面是我正在使用的代码:
代码
package tryout;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.SequenceFile;
import org.apache.hadoop.io.Text;
import org.apache.mahout.math.RandomAccessSparseVector;
import org.apache.mahout.math.Vector;
import org.apache.mahout.math.VectorWritable;
import org.apache.mahout.clustering.kmeans.Kluster;
import org.apache.mahout.clustering.classify.WeightedVectorWritable;
import org.apache.mahout.clustering.kmeans.KMeansDriver;
import org.apache.mahout.common.distance.EuclideanDistanceMeasure;
public class SimpleKMeansClustering {
public static final double[][] points = { {1, 1}, {2, 1}, {1, 2},
{2, 2}, {3, 3}, {8, 8},
{9, 8}, {8, 9}, {9, 9}};
public static void writePointsToFile(List<Vector> points,
String fileName,FileSystem fs,Configuration conf) throws IOException {
Path path = new Path(fileName);
@SuppressWarnings("deprecation")
SequenceFile.Writer writer = new SequenceFile.Writer(fs, conf,path, LongWritable.class, VectorWritable.class);
long recNum = 0;
VectorWritable vec = new VectorWritable();
for (Vector point : points) {
vec.set(point);
writer.append(new LongWritable(recNum++), vec);
} writer.close();
}
public static List<Vector> getPoints(double[][] raw) {
List<Vector> points = new ArrayList<Vector>();
for (int i = 0; i < raw.length; i++) {
double[] fr = raw[i];
Vector vec = new RandomAccessSparseVector(fr.length);
vec.assign(fr);
points.add(vec);
}
return points;
}
public static void main(String args[]) throws Exception {
int k = 2;
List<Vector> vectors = getPoints(points);
File testData = new File("testdata");
if (!testData.exists()) {
testData.mkdir();
}
testData = new File("testdata/points");
if (!testData.exists()) {
testData.mkdir();
}
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get(conf);
writePointsToFile(vectors, "testdata/points/file1", fs, conf);
Path path = new Path("testdata/clusters/part-00000");
@SuppressWarnings("deprecation")
SequenceFile.Writer writer = new SequenceFile.Writer(fs, conf,path, Text.class, Kluster.class);
for (int i = 0; i < k; i++) {
Vector vec = vectors.get(i);
Kluster cluster = new Kluster(vec, i, new EuclideanDistanceMeasure());
writer.append(new Text(cluster.getIdentifier()), cluster);
}
writer.close();
KMeansDriver.run(conf, new Path("testdata/points"), new Path("testdata/clusters"),
new Path("output"), new EuclideanDistanceMeasure(), 0.001, 10,
true,0.0, false);
@SuppressWarnings("deprecation")
SequenceFile.Reader reader = new SequenceFile.Reader(fs,new Path("output/" + Kluster.CLUSTERED_POINTS_DIR+ "/part-m-00000"), conf);
IntWritable key = new IntWritable();
WeightedVectorWritable value = new WeightedVectorWritable();
while (reader.next(key, value)) {
System.out.println(value.toString() + " belongs to cluster " + key.toString());
}
reader.close();
}
}
有谁能给我指点一下。。。
2条答案
按热度按时间zujrkrfu1#
我认为命令应该是
mahout kmeans
,不是mahout jar
.https://cwiki.apache.org/mahout/k-means-clustering.html
你的命令不好。
bfrts1fy2#
你的命令根本不运行kmeans。你需要这样做:
请参阅以下链接:https://mahout.apache.org/users/clustering/k-means-clustering.html