<s>
Eurisko	B-Algorithm
(	O
Gr.	O
,	O
I	O
discover	O
)	O
is	O
a	O
discovery	B-Algorithm
system	I-Algorithm
written	O
by	O
Douglas	O
Lenat	O
in	O
RLL-1	O
,	O
a	O
representation	O
language	O
itself	O
written	O
in	O
the	O
Lisp	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
A	O
sequel	O
to	O
Automated	B-General_Concept
Mathematician	I-General_Concept
,	O
it	O
consists	O
of	O
heuristics	B-Algorithm
,	O
i.e.	O
</s>
<s>
rules	O
of	O
thumb	O
,	O
including	O
heuristics	B-Algorithm
describing	O
how	O
to	O
use	O
and	O
change	O
its	O
own	O
heuristics	B-Algorithm
.	O
</s>
<s>
Lenat	O
was	O
frustrated	O
by	O
Automated	B-General_Concept
Mathematician	I-General_Concept
's	O
constraint	O
to	O
a	O
single	O
domain	O
and	O
so	O
developed	O
Eurisko	B-Algorithm
;	O
his	O
frustration	O
with	O
the	O
effort	O
of	O
encoding	O
domain	O
knowledge	O
for	O
Eurisko	B-Algorithm
led	O
to	O
Lenat	O
's	O
subsequent	O
(	O
and	O
,	O
,	O
continuing	O
)	O
development	O
of	O
Cyc	B-Language
.	O
</s>
<s>
Lenat	O
envisions	O
ultimately	O
coupling	O
the	O
Cyc	B-Language
knowledgebase	O
with	O
the	O
Eurisko	B-Algorithm
discovery	O
engine	O
.	O
</s>
<s>
But	O
when	O
the	O
implementation	O
was	O
changed	O
to	O
a	O
frame	O
language	O
based	O
representation	O
he	O
called	O
RLL	O
(	O
Representation	O
Language	O
Language	O
)	O
,	O
heuristic	B-Algorithm
creation	O
and	O
modification	O
became	O
much	O
simpler	O
.	O
</s>
<s>
Eurisko	B-Algorithm
was	O
then	O
applied	O
to	O
a	O
number	O
of	O
domains	O
with	O
surprising	O
success	O
,	O
including	O
VLSI	O
chip	O
design	O
.	O
</s>
<s>
Lenat	O
and	O
Eurisko	B-Algorithm
gained	O
notoriety	O
by	O
submitting	O
the	O
winning	O
fleet	O
(	O
a	O
large	O
number	O
of	O
stationary	O
,	O
lightly-armored	O
ships	O
with	O
many	O
small	O
weapons	O
)	O
to	O
the	O
United	O
States	O
Traveller	O
TCS	O
national	O
championship	O
in	O
1981	O
,	O
forcing	O
extensive	O
changes	O
to	O
the	O
game	O
's	O
rules	O
.	O
</s>
<s>
However	O
,	O
Eurisko	B-Algorithm
won	O
again	O
in	O
1982	O
when	O
the	O
program	O
discovered	O
that	O
the	O
rules	O
permitted	O
the	O
program	O
to	O
destroy	O
its	O
own	O
ships	O
,	O
permitting	O
it	O
to	O
continue	O
to	O
use	O
much	O
the	O
same	O
strategy	O
.	O
</s>
<s>
Tournament	O
officials	O
announced	O
that	O
if	O
Eurisko	B-Algorithm
won	O
another	O
championship	O
the	O
competition	O
would	O
be	O
abolished	O
;	O
Lenat	O
retired	O
Eurisko	B-Algorithm
from	O
the	O
game	O
.	O
</s>
<s>
In	O
the	O
first-season	O
The	O
X-Files	O
episode	O
"	O
Ghost	O
in	O
the	O
Machine	O
"	O
,	O
Eurisko	B-Algorithm
is	O
the	O
name	O
of	O
a	O
fictional	O
software	O
company	O
responsible	O
for	O
the	O
episode	O
's	O
"	O
monster	O
of	O
the	O
week	O
"	O
,	O
facilities	O
management	O
software	O
known	O
as	O
"	O
Central	O
Operating	O
System	O
"	O
,	O
or	O
"	O
COS	O
"	O
.	O
</s>
<s>
COS	O
(	O
described	O
in	O
the	O
episode	O
as	O
an	O
"	O
adaptive	O
network	O
"	O
)	O
is	O
shown	O
to	O
be	O
capable	O
of	O
learning	O
when	O
its	O
designer	O
arrives	O
at	O
Eurisko	B-Algorithm
headquarters	O
and	O
is	O
surprised	O
to	O
find	O
that	O
COS	O
has	O
given	O
itself	O
the	O
ability	O
to	O
speak	O
.	O
</s>
<s>
Lenat	O
is	O
mentioned	O
and	O
Eurisko	B-Algorithm
is	O
discussed	O
at	O
the	O
end	O
of	O
Richard	O
Feynman	O
's	O
Computer	O
Heuristics	B-Algorithm
Lecture	O
as	O
part	O
of	O
the	O
Idiosyncratic	O
Thinking	O
Workshop	O
Series	O
.	O
</s>
<s>
Lenat	O
and	O
Eurisko	B-Algorithm
are	O
mentioned	O
in	O
the	O
2019	O
James	O
Rollins	O
novel	O
Crucible	O
that	O
deals	O
with	O
artificial	B-Application
intelligence	I-Application
and	O
artificial	O
general	O
intelligence	O
.	O
</s>
