Well that's how it is in biology as well...
Despite of gap-junctions all synapses are one directional.
This is also logically sensical, as one feature can predict another while
the other does not necessarily mean the first one is present. You want to
learn these connections separately.

On a high level you may draw the analogy that 'Car' implies 'seat'; but
'seat' does not necessarily  (or with the same strength) imply 'car'...
On Aug 2, 2015 4:26 AM, "Chandan Maruthi" <[email protected]> wrote:

> Is a Nupic synaptic connection 2 way? Or is it one way by default and has
> to explicitly be trained to learn a new connection back.
>
>
> So cell a on column a1 connected to cell b on column b1 does not
> automatically mean activation of b will result in prediction of a right?
>
> I see why it is so, but it seems inefficient , doesn't it?
>
>
>
> --
> Regards
> Chandan Maruthi
>
>
>

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