Thanks for the explanation Fergal, > The Spatial Pooler is an artefact of NuPIC; Does this mean that it is not used anymore in the current state?
> it simulates the way a layer of columns becomes activated by feedforward > inputs. But this assumes then that the FF-inputs receive "true" SDR data, right? > In essence, the algorithm is: > > Get all columns to check their feedforward dendrite and generate an > activation score. > Pick the top 2% of columns based on activation score and activate them. > Update the permanences on the feedforward dendrites. This makes sense to me (assuming the input is SDR) > In the neocortex, the columns do this themselves, and they pick the top 2% > (may vary) by higher-score columns inhibiting nearby lower-score columns. > They also update their own synapses themselves. > > So the SP is simulating the inter-region communication as well as the > single-region sensory communication. Thank you for clarifying Regards Francisco
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