[comp.ai.digest] Sigmoid function

ayl%hutds.hut.fi@FINGATE.BITNET (Antti Ylikoski) (08/23/88)

Date: Sat, 20 Aug 88 13:06 EDT
From: Antti Ylikoski <ayl%hutds.hut.fi%FINGATE.BITNET@MITVMA.MIT.EDU>
To: AIList@AI.AI.MIT.EDU
Subject: Sigmoid function
cc: ayl@hutds.hut.fi



One way to build a circuit that produces the true sigmoid function
would be to store the value-argument pairs into a ROM and use the
following circuit:
f
           |-----------------|  |------|  |-----------------|
input ---> | A / D converter |->|  ROM |->| D / A converter | ---> output
           |-----------------|  |------|  |-----------------|

Antti (Andy) Ylikoski
Helsinki University of Technology (I think a better translation would be
Helsinki Institute of technology)
Digital Systems Laboratory
YLIKOSKI@FINFUN.BITNET
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