<s>
LightGBM	B-Algorithm
,	O
short	O
for	O
light	O
gradient-boosting	B-Algorithm
machine	O
,	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
distributed	O
gradient-boosting	B-Algorithm
framework	O
for	O
machine	O
learning	O
,	O
originally	O
developed	O
by	O
Microsoft	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
decision	B-Algorithm
tree	I-Algorithm
algorithms	O
and	O
used	O
for	O
ranking	O
,	O
classification	B-General_Concept
and	O
other	O
machine	O
learning	O
tasks	O
.	O
</s>
<s>
The	O
LightGBM	B-Algorithm
framework	O
supports	O
different	O
algorithms	O
including	O
GBT	O
,	O
GBDT	O
,	O
GBRT	B-Algorithm
,	O
GBM	B-Algorithm
,	O
MART	B-Algorithm
and	O
RF	B-Algorithm
.	O
</s>
<s>
LightGBM	B-Algorithm
has	O
many	O
of	O
XGBoost	B-Language
's	O
advantages	O
,	O
including	O
sparse	O
optimization	O
,	O
parallel	O
training	O
,	O
multiple	O
loss	O
functions	O
,	O
regularization	O
,	O
bagging	O
,	O
and	O
early	O
stopping	O
.	O
</s>
<s>
LightGBM	B-Algorithm
does	O
not	O
grow	O
a	O
tree	O
level-wise	O
—	O
row	O
by	O
row	O
—	O
as	O
most	O
other	O
implementations	O
do	O
.	O
</s>
<s>
Besides	O
,	O
LightGBM	B-Algorithm
does	O
not	O
use	O
the	O
widely	O
used	O
sorted-based	O
decision	B-Algorithm
tree	I-Algorithm
learning	O
algorithm	O
,	O
which	O
searches	O
the	O
best	O
split	O
point	O
on	O
sorted	O
feature	O
values	O
,	O
as	O
XGBoost	B-Language
or	O
other	O
implementations	O
do	O
.	O
</s>
<s>
Instead	O
,	O
LightGBM	B-Algorithm
implements	O
a	O
highly	O
optimized	O
histogram-based	O
decision	B-Algorithm
tree	I-Algorithm
learning	O
algorithm	O
,	O
which	O
yields	O
great	O
advantages	O
on	O
both	O
efficiency	O
and	O
memory	O
consumption	O
.	O
</s>
<s>
The	O
LightGBM	B-Algorithm
algorithm	O
utilizes	O
two	O
novel	O
techniques	O
called	O
Gradient-Based	O
One-Side	O
Sampling	O
(	O
GOSS	O
)	O
and	O
Exclusive	O
Feature	O
Bundling	O
(	O
EFB	O
)	O
which	O
allow	O
the	O
algorithm	O
to	O
run	O
faster	O
while	O
maintaining	O
a	O
high	O
level	O
of	O
accuracy	O
.	O
</s>
<s>
LightGBM	B-Algorithm
works	O
on	O
Linux	B-Application
,	O
Windows	B-Application
,	O
and	O
macOS	B-Application
and	O
supports	O
C++	B-Language
,	O
Python	B-Language
,	O
R	B-Language
,	O
and	O
C#	B-Application
.	O
</s>
<s>
The	O
source	O
code	O
is	O
licensed	O
under	O
MIT	B-License
License	I-License
and	O
available	O
on	O
GitHub	B-Application
.	O
</s>
