OK. The wikipedia example in these pages http://mahout.apache.org/users/classification/wikipedia-bayes-example.html https://cwiki.apache.org/confluence/display/MAHOUT/Wikipedia+Bayes+Example
Are valid for older Mahouts. I have no problem with Mahout 0.6. However the last two commands (trainclassifier and testclassifier) are not valid on Mahout 0.9. For example, trainnb need a label option but I don't know what it is because trainclassifier has no such option. As I said the example is runnable under Mahout 0.6. If you confirm that Mahout 0.6 and 0.9 have no difference regarding the Wikipedia Bayes, then I will forget 0.9. I see many changes in the changelog. Regards, Mahmood On Tuesday, March 25, 2014 6:19 PM, Suneel Marthi <suneel_mar...@yahoo.com> wrote: If u r looking for an example usage, see examples/bin/classify-20newsgroups.sh Sent from my iPhone > On Mar 25, 2014, at 9:28 AM, Andrew Musselman <andrew.mussel...@gmail.com> > wrote: > > 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 <nt_mahm...@yahoo.com>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
