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From Grant Ingersoll <gsing...@apache.org>
Subject [Canopy] Picking t1 and t2 was Re: [jira] Commented: (MAHOUT-121) Speed up distance calculations for sparse vectors
Date Wed, 17 Jun 2009 11:16:25 GMT
Shashikant asked this over on mahout-dev, but I thought I would move  
it to user so that others can benefit from the discussion.


On Jun 17, 2009, at 1:12 AM, Shashikant Kore (JIRA) wrote:
>
> Shashikant Kore commented on MAHOUT-121:
> ----------------------------------------
>
>
> [OT] Also, was wondering how you came up with the values of t1 and  
> t2 as 1.3 & 1.0. This is  voodoo for me. For the dataset I am  
> working with has a window of 0.05 in which the result changes from 0  
> canopies to 3,000 canopies.

I just picked some numbers based on what you did!  It is voodoo to me  
too.  I have not done much clustering, so I'm learning a lot here.  As  
for MAHOUT-121, I just wanted something to run.
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