Re: [Databionic-esom-user] Parameter Selection for ESOM

[Mario N. <noe...@Ma...>]

Hi Michael,

the best size of the grid depends on the size of the dataset. Using
emergent SOMs you need of course much more neurons then datapoints.
Mostly we use grids with 50 rows and 82 columns, or 70 rows and 110
columns. We realized grids with a rectangular shape  offer the  best
results.

We mostly use 20-30 epochs of training without relating to the gridsize.

if there are more questions, please ask.

mario

Michael Dell Junior wrote:

> Hi all,
>  
> Congratulations on the development effort for the production of such a
> good tool.
>  
> I have a few questions regarding the use of the tool:
>  
>  
> 1) Is there a "right number" for the size of the grid for convergence
> to occur?
> 2) Is there a relationship (or a rule of thumb) between the number of
> traning instances used and the right size of the grid?
>  
>  
>  
> Your help will be very much appreciated.
>  
> Regards,
> Michael Dell Junior
>
>
>
> ------------------------------------------------------------------------
> Post your free ad now! *Yahoo! Canada Personals*
> <http://ca.personals.yahoo.com/>