<s>
A	O
chord	B-Application
diagram	I-Application
is	O
a	O
graphical	O
method	O
of	O
displaying	O
the	O
inter-relationships	O
between	O
data	O
in	O
a	O
matrix	B-Architecture
.	O
</s>
<s>
The	O
format	O
can	O
be	O
aesthetically	O
pleasing	O
,	O
making	O
it	O
a	O
popular	O
choice	O
in	O
the	O
world	O
of	O
data	B-Application
visualization	I-Application
.	O
</s>
<s>
The	O
primary	O
use	O
of	O
chord	B-Application
diagrams	I-Application
is	O
to	O
show	O
the	O
flows	O
or	O
connections	O
between	O
several	O
entities	O
(	O
called	O
nodes	O
)	O
.	O
</s>
<s>
Chord	B-Application
diagrams	I-Application
get	O
their	O
name	O
from	O
terminology	O
used	O
in	O
geometry	O
.	O
</s>
<s>
Chord	B-Application
diagrams	I-Application
are	O
also	O
known	O
as	O
radial	O
network	O
diagrams	O
and	O
may	O
sometimes	O
be	O
referred	O
to	O
as	O
a	O
type	O
of	O
circular	O
layout	O
.	O
</s>
<s>
To	O
reduce	O
the	O
visual	O
complexity	O
,	O
chord	B-Application
diagrams	I-Application
employ	O
a	O
technique	O
called	O
hierarchical	O
edge	O
bundling	O
.	O
</s>
<s>
Chord	B-Application
diagrams	I-Application
are	O
useful	O
for	O
showing	O
relationships	O
between	O
entities	O
and	O
their	O
relative	O
magnitudes	O
in	O
comparison	O
to	O
alternative	O
arcs	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
chord	B-Application
diagrams	I-Application
are	O
popular	O
in	O
migration	O
studies	O
,	O
economic	O
flows	O
,	O
and	O
genome	O
studies	O
.	O
</s>
<s>
They	O
have	O
also	O
been	O
used	O
to	O
highlight	O
unexplored	O
relationships	O
to	O
help	O
address	O
the	O
problem	O
of	O
filter	B-Algorithm
bubbles	I-Algorithm
.	O
</s>
