Re: can I visualize clusters using the mahout binary?

[rahul raghavendhra <ra...@gmail.com>]

Hi All,

I want to visualize the clusters. So i decided to export as graph ML using

./mahout clusterdump --seqFileDir output/clusters-2-final --pointsDir
output/clusteredPoints --outputFormat GRAPH_ML -o answerq.txt

but it is not working and i got the following exception..

 Exception in thread "main" java.lang.NoSuchMethodError:
org.apache.mahout.common.StringUtils.escapeXML(Ljava/lang/String;)Ljava/lang/String;
    at
org.apache.mahout.utils.clustering.GraphMLClusterWriter.createNode(GraphMLClusterWriter.java:192)
    at
org.apache.mahout.utils.clustering.GraphMLClusterWriter.write(GraphMLClusterWriter.java:114)
    at
org.apache.mahout.utils.clustering.AbstractClusterWriter.write(AbstractClusterWriter.java:168)
    at
org.apache.mahout.utils.clustering.AbstractClusterWriter.write(AbstractClusterWriter.java:155)
    at
org.apache.mahout.utils.clustering.ClusterDumper.printClusters(ClusterDumper.java:187)
    at
org.apache.mahout.utils.clustering.ClusterDumper.run(ClusterDumper.java:153)
    at
org.apache.mahout.utils.clustering.ClusterDumper.main(ClusterDumper.java:102)
    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.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:57)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)

P.S :
 TEXT and CSV option is working.. Can we use that csv for visualizing ? if
so wat tool can be used ? please help


./rahul









On Thu, Feb 2, 2012 at 9:40 AM, Suneel Marthi <su...@yahoo.com>wrote:

> You can use mahout's clusterdump utility
>
>
> ./bin/mahout clusterdump
>
>
> to dump the clusters to a graphml file (look at the help for clusterdump
> ./bin/mahout clusterdump -help)
>
> You can then use a visualization tool like Gephi or Graphviz, to load the
> graphml file and visualize the clusters.
>
>
>
> ________________________________
>  From: Daniel Quach <da...@cs.ucla.edu>
> To: user@mahout.apache.org
> Sent: Wednesday, February 1, 2012 10:36 PM
> Subject: can I visualize clusters using the mahout binary?
>
> I just ran k-means over a set of data and I was wondering if there is a
> way to visualize these clusters on a 2D plane without having to write code,
> but rather running the mahout binary (bin/mahout)
>
> I don't see any available programs after calling bin/mahout to visualize
> clusters.
>