测试kmean时报错怎么解决

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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 -clRunning on hadoop, using HADOOP_HOME=/usr/local/hadoopHADOOP_CONF_DIR=/usr/local/hadoop/conf14/01/23 12:43:34 ERROR common.AbstractJob: Unexpected o while processing Job-Specific Options:usage:  [Generic Options] [Job-Specific Options]Generic Options: -archives              comma separated archives to be unarchived                               on the compute machines. -conf     specify an application configuration file -D            use value for given property -files                 comma separated files to be copied to the                               map reduce cluster -fs      specify a namenode -jt    specify a job tracker -libjars               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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