<s>
Tunebot	B-Application
is	O
a	O
music	O
search	O
engine	O
developed	O
by	O
the	O
Interactive	O
Audio	O
Lab	O
at	O
Northwestern	O
University	O
.	O
</s>
<s>
Tunebot	B-Application
is	O
a	O
Query	B-Application
by	I-Application
humming	I-Application
system	O
.	O
</s>
<s>
In	O
addition	O
to	O
note	O
intervals	O
,	O
Tunebot	B-Application
compares	O
a	O
query	O
with	O
potential	O
targets	O
by	O
using	O
rhythmic	O
ratios	O
between	O
notes	O
.	O
</s>
<s>
Each	O
of	O
these	O
recordings	O
is	O
associated	O
with	O
a	O
corresponding	O
song	O
on	O
Amazon	B-Application
.	O
</s>
<s>
Tunebot	B-Application
learns	O
from	O
user	O
input	O
,	O
and	O
it	O
improve	O
its	O
results	O
as	O
each	O
user	O
submits	O
more	O
queries	O
.	O
</s>
<s>
By	O
choosing	O
a	O
song	O
from	O
a	O
list	O
of	O
ranked	O
results	O
,	O
users	O
tell	O
Tunebot	B-Application
which	O
song	O
was	O
correct	O
.	O
</s>
<s>
Tunebot	B-Application
then	O
pairs	O
that	O
song	O
with	O
the	O
user	O
's	O
query	O
,	O
analyzes	O
the	O
differences	O
,	O
and	O
runs	O
a	O
Genetic	B-Algorithm
Algorithm	I-Algorithm
.	O
</s>
