Displacement Representations

Arthur T. Murray uj797 at victoria.tc.ca
Sun Sep 12 08:51:36 EST 2004

minsky at media.mit.edu (Marvin Minsky) wrote on 11 Sep 2004:

> "Lance Sherman" <lancesherman at insightBB.com> wrote in message
> news:<V0I0d.23947$MQ5.12109 at attbi_s52>...
>> I'm not sure I see the question -
>> by "biological neural network", do you mean a biologically plausible
>> artificial NN?
>> "Harry Erwin" <herwin at theworld.com> wrote in message
>> news:1gjy8r1.1ov7fmr5a7cl2N%herwin at theworld.com...
>> > I've been exploring neural implementations of displacement
>> > representations. I'm suspicious that Minsky and Papert (1969) implies
>> > that it is very difficult to use a biological neural network to do
>> > vector operations. Any pointers?
>> >
>> > --
>> > Harry Erwin <http://www.theworld.com/~herwin>
>> > My neuroscience wikiwiki is at
>> > <http://scat-he-g4.sunderland.ac.uk/~harryerw/phpwiki/index.php>
>Well, It is easy to make analog networks that do matrix-like
>operations, but non-linear networks (e.g., with thresholds) would make
>that rather difficult!  However, what we showed in 1969 was
>non-looping neural networks could not recognize topological features
>of things in was that woulkd be scalable.  And those theorems still
--------------ways that would be scalable (?)
>are true, regardless of improvements in how fast such networks can
>learn the things  that they can learn.

Best wishes from
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