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From 周峰 <feng2...@gmail.com>
Subject Re: i have met a problem when i do "Creating Vectors from Text"
Date Thu, 22 Oct 2009 08:54:54 GMT
Thank you.you have reminded me to store term vectors.The class
"org.apache.lucene.demo.IndexFiles " (in
http://lucene.apache.org/java/2_9_0/demo.html)  which i used to create index
files does not store term vectors.

Now i can run the example of kmeans successfully.I have another
question.When i use the class
"org.apache.mahout.utils.vectors.lucene.Driver" to create vectors from index
files,this class can convert a field of index to an output file,and then the
KMeansDriver can run based on the output file.But in my application,i want
the kmeans to compute based on multi-field .Because in my application,i use
multi-field to describe one object.
How do i achieve my goal? Thanks



2009/10/22 Grant Ingersoll <gsingers@apache.org>

> Do you have Term Vectors stored?
>
>
> On Oct 21, 2009, at 9:52 AM, 周峰 wrote:
>
> yes.i have solved the problem.These jarfiles must be added in classpath.
>> root@master:/home/zhoufeng/mahout/trunk/utils/target/dependency# java -cp
>>
>> /home/zhoufeng/mahout/trunk/utils/target/mahout-utils-0.2-SNAPSHOT.jar:lucene-core-2.9.0.jar:slf4j-api-1.5.8.jar:slf4j-jcl-1.5.8.jar:commons-logging-1.1.1.jar:commons-cli-2.0-mahout.jar:/home/zhoufeng/mahout/trunk/core/target/mahout-core-0.2-SNAPSHOT.jar:hadoop-core-0.20.1.jar
>> org.apache.mahout.utils.vectors.lucene.Driver --dir
>> /home/zhoufeng/newdisk/newindex/ --field string -t
>> /home/zhoufeng/newdisk/di
>> ct.txt --output /home/zhoufeng/newdisk/out.txt --max 50
>>
>> 2009-10-21 21:44:39 org.slf4j.impl.JCLLoggerAdapter info
>>  Output File: /home/zhoufeng/newdisk/out.txt
>> 2009-10-21 21:44:40 org.apache.hadoop.util.NativeCodeLoader <clinit>
>>  Unable to load native-hadoop library for your platform... using
>> builtin-java classes where applicable
>> 2009-10-21 21:44:40 org.apache.hadoop.io.compress.CodecPool getCompressor
>>  Got brand-new compressor
>> Exception in thread "main" java.lang.NullPointerException
>>       at
>>
>> org.apache.mahout.utils.vectors.lucene.LuceneIterable$TDIterator.next(LuceneIterable.java:110)
>>       at
>>
>> org.apache.mahout.utils.vectors.lucene.LuceneIterable$TDIterator.next(LuceneIterable.java:81)
>>       at
>>
>> org.apache.mahout.utils.vectors.io.SequenceFileVectorWriter.write(SequenceFileVectorWriter.java:40)
>>       at
>> org.apache.mahout.utils.vectors.lucene.Driver.main(Driver.java:200)
>>
>> Does this exception show that there are some problems in my index files?
>>
>> i used the class  "org.apache.lucene.demo.IndexFiles " (in
>> http://lucene.apache.org/java/2_9_0/demo.html) to create my index
>> files.And
>> i have used the class "org.apache.lucene.demo.SearchFiles"(also in
>> http://lucene.apache.org/java/2_9_0/demo.html) to search the index
>> successfully.
>> 2009/10/21 Grant Ingersoll <gsingers@apache.org>
>>
>> Here's what I use to run it, as generated by IntelliJ (<substitute <HOME>
>>> with your appropriate value)
>>> :
>>> java -Xmx1024M -Dfile.encoding=UTF-8 -classpath
>>>
>>> <HOME>/projects/lucene/mahout/mahout-clean/utils/target/classes:<HOME>/projects/lucene/mahout/mahout-clean/core/target/classes:<HOME>/.m2/repository/org/apache/mahout/hadoop/hadoop-core/0.20.1/hadoop-core-0.20.1.jar:<HOME>/.m2/repository/org/apache/mahout/hbase/hbase/0.20.0/hbase-0.20.0.jar:<HOME>/.m2/repository/org/apache/mahout/kosmofs/kfs/0.3/kfs-0.3.jar:<HOME>/.m2/repository/org/apache/mahout/jets3t/jets3t/0.7.1/jets3t-0.7.1.jar:<HOME>/.m2/repository/xmlenc/xmlenc/0.52/xmlenc-0.52.jar:<HOME>/.m2/repository/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar:<HOME>/.m2/repository/commons-httpclient/commons-httpclient/3.1/commons-httpclient-3.1.jar:<HOME>/.m2/repository/commons-codec/commons-codec/1.2/commons-codec-1.2.jar:<HOME>/.m2/repository/commons-dbcp/commons-dbcp/1.2.2/commons-dbcp-1.2.2.jar:<HOME>/.m2/repository/commons-pool/commons-pool/1.4/commons-pool-1.4.jar:<HOME>/.m2/repository/log4j/log4j/1.2.15/log4j-1.2.15.jar:<HOME>/.m2/repository/javax/mail/mail/1.4/mail-1.4.jar:<HOME>/.m2/repository/javax/activation/activation/1.1/activation-1.1.jar:<HOME>/.m2/repository/org/slf4j/slf4j-api/1.5.8/slf4j-api-1.5.8.jar:<HOME>/.m2/repository/org/slf4j/slf4j-jcl/1.5.8/slf4j-jcl-1.5.8.jar:<HOME>/.m2/repository/commons-lang/commons-lang/2.4/commons-lang-2.4.jar:<HOME>/.m2/repository/org/apache/mahout/watchmaker/watchmaker-framework/0.6.2/watchmaker-framework-0.6.2.jar:<HOME>/.m2/repository/org/apache/mahout/watchmaker/watchmaker-swing/0.6.2/watchmaker-swing-0.6.2.jar:<HOME>/.m2/repository/org/apache/mahout/uncommons/math/uncommons-math/1.2/uncommons-math-1.2.jar:<HOME>/.m2/repository/com/thoughtworks/xstream/xstream/1.2.1/xstream-1.2.1.jar:<HOME>/.m2/repository/xpp3/xpp3_min/1.1.3.4.O/xpp3_min-1.1.3.4.O.jar:<HOME>/.m2/repository/org/apache/lucene/lucene-analyzers/2.9.0/lucene-analyzers-2.9.0.jar:<HOME>/.m2/repository/org/apache/lucene/lucene-core/2.9.0/lucene-core-2.9.0.jar:<HOME>/.m2/repository/org/apache/mahout/commons/commons-cli/2.0-mahout/commons-cli-2.0-mahout.jar:<HOME>/.m2/repository/commons-math/commons-math/1.2/commons-math-1.2.jar:<HOME>/.m2/repository/junit/junit/3.8.2/junit-3.8.2.jar:<HOME>/.m2/repository/org/easymock/easymockclassextension/2.2/easymockclassextension-2.2.jar:<HOME>/.m2/repository/org/easymock/easymock/2.2/easymock-2.2.jar:<HOME>/.m2/repository/cglib/cglib-nodep/2.1_3/cglib-nodep-2.1_3.jar:<HOME>/.m2/repository/com/google/code/gson/gson/1.3/gson-1.3.jar:<HOME>/.m2/repository/org/easymock/easymock/2.4/easymock-2.4.jar:<HOME>/.m2/repository/org/easymock/easymockclassextension/2.4/easymockclassextension-2.4.jar:<HOME>/.m2/repository/cglib/cglib/2.1_3/cglib-2.1_3.jar:<HOME>/.m2/repository/asm/asm/1.5.3/asm-1.5.3.jar
>>> org.apache.mahout.utils.vectors.lucene.Driver --dir
>>> <HOME>/projects/lucene/solr/wikipedia/solr/data/index --field body -t
>>> <HOME>/projects/lucene/solr/wikipedia/dict.txt --output
>>> <HOME>/projects/lucene/solr/wikipedia/part-50.txt --max 50
>>>
>>> One way to quickly get all of the dependencies in a single directory for
>>> inclusion on the command line is via Maven's copy-dependencies goal:  mvn
>>> dependency:copy-dependencies
>>>
>>> This will download all the dependencies under a subdir of the target dir.
>>>
>>>
>>> On Oct 21, 2009, at 4:04 AM, 周峰 wrote:
>>>
>>> At first,i have  built a Lucene index in my directory
>>>
>>>> "/home/zhoufeng/newdisk/newindex",then i want to create Vectors from the
>>>> index files.
>>>> then i met a problem
>>>> root@master:/home/zhoufeng/mahout/trunk/utils/target# java -cp
>>>>
>>>>
>>>> mahout-utils-0.2-SNAPSHOT.jar:/home/zhoufeng/mahout/trunk/core/target/mahout-core-0.2-SNAPSHOT.jar
>>>> org.apache.mahout.utils.vectors.lucene.Driver --dir
>>>> /home/zhoufeng/newdisk/newindex string --dictOut
>>>> /home/zhoufeng/newdisk/newindex/dict.txt --output
>>>> /home/zhoufeng/newdisk/newindex/out.txt -max 50
>>>> Exception in thread "main" java.lang.NoClassDefFoundError:
>>>> org/apache/commons/cli2/OptionException
>>>> Caused by: java.lang.ClassNotFoundException:
>>>> org.apache.commons.cli2.OptionException
>>>>     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>>>>     at java.security.AccessController.doPrivileged(Native Method)
>>>>     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>>>>     at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>>>>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>>>>     at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>>>>     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>>>> Could not find the main class:
>>>> org.apache.mahout.utils.vectors.lucene.Driver.  Program will exit.
>>>>
>>>> i do not know where is the java file
>>>> "org.apache.commons.cli2.OptionException".
>>>> Is It because some jar file is absent?
>>>>
>>>> can anyone help me? thanks
>>>>
>>>>
>>> --------------------------
>>> Grant Ingersoll
>>> http://www.lucidimagination.com/
>>>
>>> Search the Lucene ecosystem (Lucene/Solr/Nutch/Mahout/Tika/Droids) using
>>> Solr/Lucene:
>>> http://www.lucidimagination.com/search
>>>
>>>
>>>
> --------------------------
> Grant Ingersoll
> http://www.lucidimagination.com/
>
> Search the Lucene ecosystem (Lucene/Solr/Nutch/Mahout/Tika/Droids) using
> Solr/Lucene:
> http://www.lucidimagination.com/search
>
>

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