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测试mahout in action 中kmean实例的时候,输入命令:
bin/mahout kmeans -i reuters-vectors/tfidf-vectors/ \
-c reuters-initial-clusters \
-o reuters-kmeans-clusters \
-dm org.apache.mahout.common.distance.SquaredEuclideanDistanceMeasure \
-cd 1.0 -k 20 -x 20 -cl
报出先面的错误
mahout kmeans -i tfidf-vectors/ -c reuters-initial-clusters o reuters-kmeans-clusters dm org.apache.mahout.common.distance.SquaredEuclideanDistanceMeasure cd 1.0 -k 20 -x 20 -cl Running on hadoop, using HADOOP_HOME=/usr/local/hadoop HADOOP_CONF_DIR=/usr/local/hadoop/conf 14/01/23 12:43:34 ERROR common.AbstractJob: Unexpected o while processing Job-Specific Options: usage: <command> [Generic Options] [Job-Specific Options] Generic Options: -archives <paths> comma separated archives to be unarchived on the compute machines. -conf <configuration file> specify an application configuration file -D <property=value> use value for given property -files <paths> comma separated files to be copied to the map reduce cluster -fs <local|namenode:port> specify a namenode -jt <local|jobtracker:port> specify a job tracker -libjars <paths> comma separated jar files to include in the classpath. Job-Specific Options: --input (-i) input Path to job input directory. --output (-o) output The directory pathname for output. --distanceMeasure (-dm) distanceMeasure The classname of the DistanceMeasure. Default is SquaredEuclidean --clusters (-c) clusters The input centroids, as Vectors. Must be a SequenceFile of Writable, Cluster/Canopy. If k is also specified, then a random set of vectors will be selected and written out to this path first --numClusters (-k) k The k in k-Means. If specified, then a random selection of k Vectors will be chosen as the Centroid and written to the clusters input path. --convergenceDelta (-cd) convergenceDelta The convergence delta value. Default is 0.5 --maxIter (-x) maxIter The maximum number of iterations. --overwrite (-ow) If present, overwrite the output directory before running job --clustering (-cl) If present, run clustering after the iterations have taken place --method (-xm) method The execution method to use: sequential or mapreduce. Default is mapreduce --help (-h) Print out help --tempDir tempDir Intermediate output directory --startPhase startPhase First phase to run --endPhase endPhase Last phase to run 14/01/23 12:43:35 INFO driver.MahoutDriver: Program took 149 ms
解决办法:输入命令参数o 前面没有加- ,mahout不能解析后面的参数,所以报出来的错误.
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