Articles
14 AI MAGAZINE
word and some rules whereby sentences con-
taining it imply and are implied by others. This
idea has never been very precisely formulated
nor have examples been worked out.
3. Neuron Nets
How can a set of (hypothetical) neurons be
arranged so as to form concepts. Considerable
theoretical and experimental work has been
done on this problem by Uttley, Rashevsky and
his group, Farley and Clark, Pitts and McCul-
loch, Minsky, Rochester and Holland, and oth-
ers. Partial results have been obtained but the
problem needs more theoretical work.
4. Theory of the Size of a Calculation
If we are given a well-defined problem (one for
which it is possible to test mechanically
whether or not a proposed answer is a valid
answer) one way of solving it is to try all possi-
ble answers in order. This method is inefficient,
and to exclude it one must have some criterion
for efficiency of calculation. Some considera-
tion will show that to get a measure of the effi-
ciency of a calculation it is necessary to have
on hand a method of measuring the complex-
ity of calculating devices which in turn can be
done if one has a theory of the complexity of
functions. Some partial results on this problem
have been obtained by Shannon, and also by
McCarthy.
5. Self-lmprovement
Probably a truly intelligent machine will carry
out activities which may best be described as
self-improvement. Some schemes for doing
this have been proposed and are worth further
study. It seems likely that this question can be
studied abstractly as well.
6. Abstractions
A number of types of “abstraction” can be dis-
tinctly defined and several others less distinct-
ly. A direct attempt to classify these and to
describe machine methods of forming abstrac-
tions from sensory and other data would seem
worthwhile.
7. Randomness and Creativity
A fairly attractive and yet clearly incomplete
conjecture is that the difference between cre-
ative thinking and unimaginative competent
thinking lies in the injection of a some random-
ness. The randomness must be guided by intu-
ition to be efficient. In other words, the educat-
ed guess or the hunch include controlled
randomness in otherwise orderly thinking.
The Proposers
Claude E. Shannon
Claude E. Shannon, Mathematician, Bell Tele-
phone Laboratories. Shannon de veloped the
statistical theory of information, the applica-
tion of propositional calculus to switching cir-
cuits, and has results on the efficient synthesis
of switching circuits, the design of machines
that learn, cryptography, and the theory of Tur-
ing machines. He and J. McCarthy are coedit-
ing an Annals of Mathematics study on “The
Theory of Automata”.
Marvin L. Minsky
Marvin L. Minsky, Harvard Junior Fellow in
Mathematics and Neurology. Minsky has built
a machine for simulating learning by nerve
nets and has written a Princeton Ph.D thesis in
mathematics entitled, “Neural Nets and the
Brain Model Problem” which includes results
in learning theory and the theory of random
neural nets.
Nathaniel Rochester
Nathaniel Rochester, Manager of Information
Research, IBM Corporation, Poughkeepsie,
New York. Rochester was concerned with the
development of radar for seven years and com-
puting machinery for seven years. He and
another engineer were jointly responsible for
the design of the IBM Type 701 which is a large
scale automatic computer in wide use today.
He worked out some of the automatic program-
ming techniques which are in wide use today
and has been concerned with problems of how
to get machines to do tasks which previously
could be done only by people. He has also
worked on simulation of nerve nets with par-
ticular emphasis on using computers to test
theories in neurophysiology.
John McCarthy
John McCarthy, Assistant Professor of Mathe-
matics, Dartmouth College. McCarthy has
worked on a number of questions connected
with the mathematical nature of the thought
process including the theory of Turing ma -
chines, the speed of computers, the relation of
a brain model to its environment, and the use
of languages by machines. Some results of this
work are included in the forthcoming “Annals
Study” edited by Shannon and McCarthy.
McCarthy’s other work has been in the field of
differential equations.