So I've got 0.8 now but I'm running into an error,
../../workspace2/trunk/bin/mahout seqdirectory -i
./contentDataDir/output-content-segment -o ./contentDataDir/sequenced
../../workspace2/trunk/bin/mahout seq2sparse -i ./contentDataDir/sequenced -o
./contentDataDir/sparseVectors --namedVector -wt tf
../../workspace2/trunk/bin/mahout rowid -i
./contentDataDir/sparseVectors/tf-vectors/ -o ./contentDataDir/matrix
../../workspace2/trunk/bin/mahout cvb -i ./contentDataDir/matrix -o cvb-output
-k 100 -x 1 -dict ./contentDataDir/sparseVectors/dictionary.file-0 -dt
cvb-topic-doc -mt cvb-topic-model
but the cvb command hits a class cast exception
java.lang.ClassCastException: org.apache.hadoop.io.Text cannot be cast to
org.apache.mahout.math.VectorWritable
at
org.apache.mahout.clustering.lda.cvb.CachingCVB0Mapper.map(CachingCVB0Mapper.java:55)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1136)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
I thought the seq2sparse took care of turning hadoop Text into mahouts
VectorWritable. Where have I gone wrong?
On 16 Apr 2013, at 14:45, Jake Mannix wrote:
> You should just be building off of trunk (0.8-snapshot) in which case you
> should be working just fine.
>
>
> On Tue, Apr 16, 2013 at 6:43 AM, Chris Harrington <[email protected]>wrote:
>
>> Hi all,
>>
>> I've been trying to get the vector dumper to work on the output from cub
>> but it's throwing lots of errors.
>>
>> I found several old mails on the mailing list regrading this issue
>> specifically this
>>
>>
>> http://mail-archives.apache.org/mod_mbox/mahout-user/201211.mbox/%3CCAHSfFsy2oWRuzwVzGW57LRYaJ+LuudNu-W5EO0wnV_ff=uy...@mail.gmail.com%3E
>>
>> That thread is a bit old so I was wondering was there a patch or anything
>> to fix it or do I need to use the 0.8-snapshot?
>
>
>
>
> --
>
> -jake
