<s>
A	O
learning	B-General_Concept
automaton	I-General_Concept
is	O
one	O
type	O
of	O
machine	O
learning	O
algorithm	O
studied	O
since	O
1970s	O
.	O
</s>
<s>
Learning	B-General_Concept
automata	I-General_Concept
select	O
their	O
current	O
action	O
based	O
on	O
past	O
experiences	O
from	O
the	O
environment	O
.	O
</s>
<s>
Research	O
in	O
learning	B-General_Concept
automata	I-General_Concept
can	O
be	O
traced	O
back	O
to	O
the	O
work	O
of	O
Michael	O
Lvovitch	O
Tsetlin	O
in	O
the	O
early	O
1960s	O
in	O
the	O
Soviet	O
Union	O
.	O
</s>
<s>
Learning	B-General_Concept
automata	I-General_Concept
were	O
also	O
investigated	O
by	O
researches	O
in	O
the	O
United	O
States	O
in	O
the	O
1960s	O
.	O
</s>
<s>
However	O
,	O
the	O
term	O
learning	B-General_Concept
automaton	I-General_Concept
was	O
not	O
used	O
until	O
Narendra	O
and	O
Thathachar	O
introduced	O
it	O
in	O
a	O
survey	O
paper	O
in	O
1974	O
.	O
</s>
<s>
A	O
learning	B-General_Concept
automaton	I-General_Concept
is	O
an	O
adaptive	O
decision-making	O
unit	O
situated	O
in	O
a	O
random	O
environment	O
that	O
learns	O
the	O
optimal	O
action	O
through	O
repeated	O
interactions	O
with	O
its	O
environment	O
.	O
</s>
<s>
With	O
respect	O
to	O
the	O
field	O
of	O
reinforcement	O
learning	O
,	O
learning	B-General_Concept
automata	I-General_Concept
are	O
characterized	O
as	O
policy	O
iterators	O
.	O
</s>
<s>
Another	O
example	O
for	O
policy	O
iterators	O
are	O
evolutionary	B-Algorithm
algorithms	I-Algorithm
.	O
</s>
<s>
In	O
their	O
paper	O
,	O
they	O
investigate	O
only	O
stochastic	O
automata	O
with	O
r	O
=	O
s	O
and	O
G	O
being	O
bijective	B-Algorithm
,	O
allowing	O
them	O
to	O
confuse	O
actions	O
and	O
states	O
.	O
</s>
<s>
A	O
visualised	O
demo	O
/	O
Art	O
Work	O
of	O
a	O
single	O
Learning	B-General_Concept
Automaton	I-General_Concept
had	O
been	O
developed	O
by	O
µSystems	O
(	O
microSystems	O
)	O
Research	O
Group	O
at	O
Newcastle	O
University	O
.	O
</s>
<s>
Finite	O
action-set	O
learning	B-General_Concept
automata	I-General_Concept
(	O
FALA	O
)	O
are	O
a	O
class	O
of	O
learning	B-General_Concept
automata	I-General_Concept
for	O
which	O
the	O
number	O
of	O
possible	O
actions	O
is	O
finite	O
or	O
,	O
in	O
more	O
mathematical	O
terms	O
,	O
for	O
which	O
the	O
size	O
of	O
the	O
action-set	O
is	O
finite	O
.	O
</s>
