At the end of the exception trace, you should see the list of options which
it will
take. As I said, it's missing a "--help" option, but all of the mahout
programs,
if given an incorrect argument, will give this stack trace, followed by the
list of arguments you *could* use.
In this case, they're printed below, I'll cut the part out you need:
---------------
Usage:
[--seqFile <seqFile> --output <output> --dictionaryType <dictionaryType>
--dictionary <dictionary> --csv --useKey --printKey --sizeOnly]
Options
--seqFile (-s) seqFile The Sequence File
containing the Vectors
--output (-o) output The output file. If
not specified,
dumps to the console
--dictionaryType (-dt) dictionaryType The dictionary
file type (text|sequencefile)
--dictionary (-d) dictionary The dictionary file.
--csv (-c) Output the Vector as
CSV. Otherwise
it substitutes in the terms for
vector cell entries
--useKey (-u) If the Key is a vector, then dump
that instead
--printKey (-p) Print out the key as
well, delimited
by a tab (or the value if
useKey is true)
--sizeOnly (-sz) Dump only the size of the vector
----------------
This means you want to do:
./bin/mahout -s path_to_docTopics_output -o
path_you_want_to_write_text_output_to
and then just look in path_you_want_to_write_text_output_to, and it should
have
what you want.
-jake
On Fri, Jul 8, 2011 at 6:16 AM, huaiyang gongzi <[email protected]>wrote:
> Thanks, Jake. But after typing mahout vectordump --help, I got sth like
> this
>
> 11/07/08 09:14:25 ERROR vectors.VectorDumper: Exception
> org.apache.commons.cli2.OptionException: Unexpected --help while processing
> Options
> at org.apache.commons.cli2.commandline.Parser.parse(Parser.java:99)
> at
> org.apache.mahout.utils.vectors.VectorDumper.main(VectorDumper.java:100)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
>
> org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
> at
> org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
> at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> Usage:
>
> [--seqFile <seqFile> --output <output> --dictionaryType
> <dictionaryType>
> --dictionary <dictionary> --csv --useKey --printKey
> --sizeOnly]
> Options
>
> --seqFile (-s) seqFile The Sequence File containing
> the
>
> Vectors
> --output (-o) output The output file. If not
> specified,
> dumps to the
> console
> --dictionaryType (-dt) dictionaryType The dictionary file
> type
>
> (text|sequencefile)
> --dictionary (-d) dictionary The dictionary
> file.
> --csv (-c) Output the Vector as CSV.
> Otherwise
> it substitutes in the terms
> for
> vector cell
> entries
> --useKey (-u) If the Key is a vector, then
> dump
> that
> instead
> --printKey (-p) Print out the key as well,
> delimited
> by a tab (or the value if useKey
> is
>
> true)
> --sizeOnly (-sz) Dump only the size of the
> vector
> 11/07/08 09:14:25 INFO driver.MahoutDriver: Program took 30 ms
>
>
> On Thu, Jul 7, 2011 at 5:56 PM, Jake Mannix <[email protected]> wrote:
>
> > On Thu, Jul 7, 2011 at 5:53 PM, wine lover <[email protected]> wrote:
> >
> > > Dear All,
> > >
> > > After running LDA analysis, I got the docTopic file, which is a regular
> > > sequence-file. How to transfer it into a readable format? I searched
> > > vectordumper, or vectordump, but did not get any useful results, such
> as
> > > how
> > > to use it in command-line? Thanks.
> > >
> >
> > So you say you "searched vectordumper/vectordump", you mean you
> > looked through the code looking for it, or you used it and it didn't do
> > what
> > you wanted?
> >
> > If you're just not sure how to use it, try running "./bin/mahout" from
> your
> > distribution directory, with no arguments, and it will print out a bunch
> of
> > possible commands, one of which is vectordump. If you try to run it
> > with no arguments, it will sadly exit silently, not telling you what the
> > usage is (this is a bug!), but if you try to give it an illegal argument,
> > like
> >
> > ./bin/mahout vectordump --help
> >
> > You'll see:
> > Usage:
> >
> > [--seqFile <seqFile> --output <output> --dictionaryType <dictionaryType>
> >
> > --dictionary <dictionary> --csv --useKey --printKey --sizeOnly]
> >
> > Options
> >
> > --seqFile (-s) seqFile The Sequence File containing
> the
> >
> > Vectors
> >
> > --output (-o) output The output file. If not
> > specified,
> > dumps to the console
> >
> > --dictionaryType (-dt) dictionaryType The dictionary file type
> >
> > (text|sequencefile)
> >
> > --dictionary (-d) dictionary The dictionary file.
> >
> > --csv (-c) Output the Vector as CSV.
> > Otherwise
> > it substitutes in the terms for
> >
> > vector cell entries
> >
> > --useKey (-u) If the Key is a vector, then
> dump
> >
> > that instead
> >
> > --printKey (-p) Print out the key as well,
> > delimited
> > by a tab (or the value if
> useKey
> > is
> > true)
> >
> > --sizeOnly (-sz) Dump only the size of the
> vector
> >
> >
> > -----
> >
> > If you use these instructions to point to the docTopics output location,
> > you can have it print out the p(topic | document) for each topic/document
> > pair in your collection.
> >
> > -jake
> >
>
