[jira] [Commented] (MAHOUT-899) Add Point Sampling, Color coding to ClusterDumper

["Lance Norskog (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAHOUT-899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158236#comment-13158236 ] 

Lance Norskog commented on MAHOUT-899:
--------------------------------------

Suggestion on sampling: use reservoir sampling instead of "first N". With a fixed seed.

Other ideas: 
* make edges directed based on distance from centroid. Given (n1, n2, e) and n1 is farther from the centroid than n2, make the edge point from n1 -> n2. This creates a cool partial ordering.
* add node/edge weights based on whatever is appropriate in the algorithm.
* add node weight based on distance.
* if vectors are NamedVector add the name as a node attribute.

I find Gephi baffling, but I'm sure an expert would find these cool additions.

                
> Add Point Sampling, Color coding to ClusterDumper
> -------------------------------------------------
>
>                 Key: MAHOUT-899
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-899
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Clustering, Integration
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 0.6
>
>         Attachments: MAHOUT-899.patch
>
>
> When running the cluster dumper, or outputting values to a file for display purposes, it is useful to not have to deal with all the points per cluster.  This issue will add the ability to specify a maximum number of points to output per cluster in the cluster dumper.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira