If you need to see which options are available for a given job you can just
run $MAHOUT_HOME/bin/mahout jobname to see the usage:
$ bin/mahout trainnb
Running on hadoop, using /home/user/hadoop/bin/hadoop and HADOOP_CONF_DIR=
MAHOUT-JOB:
/home/user/mahout/examples/target/mahout-examples-1.0-SNAPSHOT-job.jar
14/03/25 06:24:22 WARN driver.MahoutDriver: No trainnb.props found on
classpath, will use command-line arguments only
14/03/25 06:24:23 ERROR common.AbstractJob: No input specified or
-Dmapred.input.dir must be provided to specify input directory
Usage:
[--input <input> --output <output> --labels <labels> --extractLabels
--alphaI
<alphaI> --trainComplementary --labelIndex <labelIndex> --overwrite --help
--tempDir <tempDir> --startPhase <startPhase> --endPhase <endPhase>]
Job-Specific Options:
--input (-i) input Path to job input directory.
--output (-o) output The directory pathname for output.
--labels (-l) labels comma-separated list of labels to
include in
training
--extractLabels (-el) Extract the labels from the input
--alphaI (-a) alphaI smoothing parameter
--trainComplementary (-c) train complementary?
--labelIndex (-li) labelIndex The path to store the label index in
--overwrite (-ow) If present, overwrite the output
directory
before running job
--help (-h) Print out help
--tempDir tempDir Intermediate output directory
--startPhase startPhase First phase to run
--endPhase endPhase Last phase to run
On Tue, Mar 25, 2014 at 3:17 AM, Mahmood Naderan <[email protected]>wrote:
> Hi,
> What is the correct syntax for this old command?
>
> mahout trainclassifier -i traininginput -o wikipediamodel -mf 4 -ms 4
>
> It seems that trainclassifier is replaced by trainnb but this one has no
> -mf option.
>
>
> Regards,
> Mahmood
