Hi,
I have downloaded Mahout and tried to execute Partial Implementation. When I
try to run I am getting the parsing error:
$HADOOP_HOME/hadoop jar
$MAHOUT_HOME/examples/target/mahout-examples-0.7-job.jar
org.apache.mahout.classifier.df.mapreduce.BuildForest -oob -d
/testdata/KDDTrain+.arff -ds /testdata/KDDTrain+.info -sl 5 -p -t 100 -o
/testdata/nsl-forest
13/01/21 18:16:24 ERROR mapreduce.BuildForest: Exception
org.apache.commons.cli2.OptionException: Unexpected /testdata/nsl-forest while
processing Options
at org.apache.commons.cli2.commandline.Parser.parse(Parser.java:99)
at
org.apache.mahout.classifier.df.mapreduce.BuildForest.run(BuildForest.java:139)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at
org.apache.mahout.classifier.df.mapreduce.BuildForest.main(BuildForest.java:253)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Usage:
[--data <path> --dataset <dataset> --selection <m> --no-complete --minsplit
<minsplit> --minprop <minprop> --seed <seed> --partial --nbtrees <nbtrees>
--output <path> --help]
Options
--data (-d) path Data path
--dataset (-ds) dataset Dataset path
--selection (-sl) m Optional, Number of variables to select randomly
at each tree-node.
For classification problem, the default is
square root of the number of explanatory
variables.
For regression problem, the default is 1/3 of
the number of explanatory variables.
--no-complete (-nc) Optional, The tree is not complemented
--minsplit (-ms) minsplit Optional, The tree-node is not divided, if the
branching data size is smaller than this value.
The default is 2.
--minprop (-mp) minprop Optional, The tree-node is not divided, if the
proportion of the variance of branching data is
smaller than this value.
In the case of a regression problem, this value
is used. The default is 1/1000(0.001).
--seed (-sd) seed Optional, seed value used to initialise the
Random number generator
--partial (-p) Optional, use the Partial Data implementation
--nbtrees (-t) nbtrees Number of trees to grow
--output (-o) path Output path, will contain the Decision Forest
--help (-h) Print out help
If I try to run with Mahout-0.5, its working fine and generating
/testdata/nsl-forest/forest.seq in hdfs.
Is this a bug in Mahout-0.7 or am I doing something wrong.
Please Suggest
Thanks
Stuti Awasthi
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