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From Grant Ingersoll <gsing...@apache.org>
Subject Re: Clustering graph coloring and layout
Date Thu, 01 Dec 2011 19:25:03 GMT

On Dec 1, 2011, at 5:02 AM, Steven Bourke wrote:

> Sorry I wasn't really following this thread - I've got lots of random throw
> away's for gephi visualisations for clustering and graphs (But not mahout
> based). Does the patch (https://issues.apache.org/jira/browse/MAHOUT-899)
> have an output file that I can use to generate visuals from? I'll can clean
> something up and add it to the patch.

It does.  Apply the patch and then build.  Then use the ClusterDumper.  Here's my example:

bin/mahout clusterdump --seqFileDir ~/projects/content/apache/sfmum/clustering/kmeans/clusters-2-final/
-o ~/projects/content/apache/sfmum/clustering/kmeans/clusters.graphml -of GRAPH_ML --distanceMeasure
org.apache.mahout.common.distance.CosineDistanceMeasure --pointsDir ~/projects/content/apache/sfmum/clustering/kmeans/clusteredPoints/
--dictionaryType sequencefile --dictionary ~/projects/content/apache/sfmum/clustering/seq2sparse/dictionary.file-0
-n 3 -sp 500

> 
> 
> On Thu, Dec 1, 2011 at 7:57 AM, Dawid Weiss <dawid.weiss@cs.put.poznan.pl>wrote:
> 
>> This looks great, Ted, thanks for sharing.
>> 
>> Dawid
>> 
>> On Thu, Dec 1, 2011 at 3:32 AM, Ted Dunning <ted.dunning@gmail.com> wrote:
>>> Sure.  I attached it, but those get stripped.  I didn't realize that this
>>> was going to the list.
>>> 
>>> Try here: http://dl.dropbox.com/u/36863361/cluster-viz.r
>>> 
>>> And here for the image: http://dl.dropbox.com/u/36863361/xyz.png
>>> 
>>> On Wed, Nov 30, 2011 at 4:04 PM, Grant Ingersoll <gsingers@apache.org
>>> wrote:
>>> 
>>>> Can you share the R code too?
>>>> 
>>>> On Nov 30, 2011, at 2:58 PM, Ted Dunning wrote:
>>>> 
>>>>> Here is some that I just whipped up.  I have also attached an example
>> of
>>>> the output.
>>>>> 
>>>>> In the sample output, notice how you can see different stories about
>>>> what clusters the brown-ish and purple clusters are near.<xyz.png>
>>>>> 
>>>>> On Tue, Nov 29, 2011 at 8:03 AM, Grant Ingersoll <gsingers@apache.org
>>> 
>>>> wrote:
>>>>> I'm still learning R, do you have code handy you could share?
>>>>> 
>>>>> On Nov 29, 2011, at 6:25 AM, Ted Dunning wrote:
>>>>> 
>>>>>> Coloring is pretty easy in R, which is what I use.  I just build
a
>>>> color
>>>>>> map with the right number of indices and use the cluster id to index
>>>> the
>>>>>> colormap.  For grins, I vary the transparency according to how
>>>> seriously
>>>>>> down-sampled the cluster is.  That lets me get a good visual feel
>> for
>>>> the
>>>>>> actual cluster size.
>>>>>> 
>>>>>> On Tue, Nov 29, 2011 at 5:03 AM, Grant Ingersoll <
>> gsingers@apache.org
>>>>> wrote:
>>>>>> 
>>>>>>> Anyone have an easy algorithm for coloring clusters in a nice
way?
>>>> That
>>>>>>> is, given k clusters, color each centroid and all of it's
>> associated
>>>> points
>>>>>>> in such a way that it is visually appealing and avoids, to the
>> extent
>>>> it
>>>>>>> can, coloring two unique clusters the same color.
>>>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>> 
>>>> --------------------------------------------
>>>> Grant Ingersoll
>>>> http://www.lucidimagination.com
>>>> 
>>>> 
>>>> 
>>>> 
>> 

--------------------------------------------
Grant Ingersoll
http://www.lucidimagination.com




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