<s>
The	B-Application
Leaf	I-Application
Project	O
is	O
a	O
group	O
robot	B-Algorithm
development	O
program	O
whose	O
objective	O
is	O
to	O
develop	O
a	O
robot	B-Algorithm
platform	O
that	O
supports	O
experiments	O
with	O
artificial	B-Application
intelligence	I-Application
,	O
vision	B-Application
,	O
navigation	O
etc	O
.	O
</s>
<s>
It	O
is	O
an	O
artificial	O
life	O
program	O
,	O
inspired	O
by	O
Steve	O
Grand	O
's	O
computer	O
game	O
Creatures	B-Application
,	O
in	O
which	O
artificial	O
beings	O
hatch	O
,	O
develop	O
,	O
and	O
interact	O
in	O
a	O
simulated	O
environment	O
.	O
</s>
<s>
A	O
software-only	O
version	O
of	O
Leaf	O
developed	O
for	O
PC	B-Device
was	O
demonstrated	O
in	O
2003	O
,	O
and	O
construction	O
of	O
the	O
first	O
robot	B-Algorithm
began	O
in	O
early	O
2004	O
.	O
</s>
<s>
Three	O
Leaf	O
robots	B-Algorithm
were	O
completed	O
in	O
2004	O
and	O
four	O
more	O
were	O
built	O
in	O
2006	O
.	O
</s>
