Hi Kevin, If you're using no topology (and no local inhibition) then the fraction of active columns (2% in NuPIC) is the only important factor. With topology, you should choose winners relative to their neighbours. In either case, the first test is to count the fraction of active columns. In the second case, measure the average distance between active columns.
Regards, Fergal Byrne On Tue, Feb 4, 2014 at 6:05 PM, Kevin Martin <[email protected]>wrote: > Hi, > > I'm writing my own version of the CLA. I have not reached anywhere > significant and I have been playing with a very small number of columns > until now. I am starting by implementing a spatial pooler and spatial > pooling requires a large number of columns. So far it has been easy to > manually check if the synapses are distributed throughout the input, if the > winning columns are really sparse etc. But it is going to be impossible > when, say,I use 1000 columns. Have somebody used a test to check if the > spatial pooler outputs a sparse distribution? Any suggestions on how to > write a test? > > Thanks, > > Kevin Martin Jose > > _______________________________________________ > nupic mailing list > [email protected] > http://lists.numenta.org/mailman/listinfo/nupic_lists.numenta.org > > -- Fergal Byrne, Brenter IT <http://www.examsupport.ie>http://inbits.com - Better Living through Thoughtful Technology e:[email protected] t:+353 83 4214179 Formerly of Adnet [email protected] http://www.adnet.ie
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