<s>
DiShIn	B-General_Concept
(	O
Disjunctive	O
Shared	O
Information	O
)	O
is	O
method	O
to	O
calculate	O
that	O
shared	O
information	O
content	O
by	O
complementing	O
the	O
value	O
of	O
most	O
informative	O
common	O
ancestor	O
(	O
MICA	O
)	O
with	O
their	O
disjunctive	O
ancestors	O
by	O
exploring	O
the	O
multiple	B-Application
inheritance	I-Application
of	O
an	O
ontology	O
.	O
</s>
<s>
DiShIn	B-General_Concept
re-defines	O
the	O
shared	O
information	O
content	O
between	O
two	O
concepts	O
as	O
the	O
average	O
of	O
all	O
their	O
disjunctive	O
ancestors	O
,	O
assuming	O
that	O
an	O
ancestor	O
is	O
disjunctive	O
if	O
the	O
difference	O
between	O
the	O
number	O
of	O
distinct	O
paths	O
from	O
the	O
concepts	O
to	O
it	O
is	O
different	O
from	O
that	O
of	O
any	O
other	O
more	O
informative	O
ancestor	O
.	O
</s>
<s>
DiShIn	B-General_Concept
is	O
an	O
improvement	O
of	O
GraSM	B-General_Concept
in	O
terms	O
of	O
computational	O
efficiency	O
and	O
in	O
the	O
management	O
of	O
parallel	O
interpretations	O
.	O
</s>
<s>
For	O
example	O
,	O
palladium	O
,	O
platinum	B-Operating_System
,	O
silver	O
and	O
gold	O
are	O
considered	O
to	O
be	O
precious	O
metals	O
,	O
and	O
silver	O
,	O
gold	O
and	O
copper	O
considered	O
to	O
be	O
coinage	O
metals	O
.	O
</s>
<s>
When	O
calculating	O
the	O
semantic	O
similarity	O
between	O
platinum	B-Operating_System
and	O
gold	O
,	O
</s>
<s>
DiShIn	B-General_Concept
starts	O
by	O
calculating	O
the	O
number	O
of	O
paths	O
difference	O
for	O
all	O
their	O
common	O
ancestors	O
:	O
</s>
<s>
For	O
metal	O
we	O
have	O
two	O
paths	O
from	O
gold	O
and	O
one	O
from	O
platinum	B-Operating_System
,	O
so	O
we	O
have	O
a	O
path	O
difference	O
of	O
one	O
.	O
</s>
<s>
When	O
calculating	O
the	O
semantic	O
similarity	O
between	O
platinum	B-Operating_System
and	O
palladium	O
,	O
</s>
<s>
DiShIn	B-General_Concept
starts	O
by	O
calculating	O
the	O
number	O
of	O
paths	O
difference	O
for	O
all	O
their	O
common	O
ancestors	O
:	O
</s>
<s>
Given	O
that	O
node-based	O
semantic	O
similarity	O
measures	O
are	O
proportional	O
to	O
the	O
average	O
of	O
the	O
information	O
content	O
of	O
their	O
common	O
disjunctive	O
ancestors	O
:	O
metal	O
and	O
precious	O
in	O
case	O
of	O
platinum	B-Operating_System
and	O
gold	O
;	O
and	O
precious	O
in	O
case	O
of	O
platinum	B-Operating_System
and	O
palladium	O
,	O
means	O
that	O
for	O
DiShIn	B-General_Concept
palladium	O
and	O
platinum	B-Operating_System
are	O
more	O
similar	O
than	O
platinum	B-Operating_System
and	O
gold	O
.	O
</s>
<s>
DiShIn	B-General_Concept
starts	O
by	O
calculating	O
the	O
number	O
of	O
paths	O
difference	O
for	O
all	O
their	O
common	O
ancestors	O
:	O
</s>
<s>
This	O
means	O
that	O
for	O
DiShIn	B-General_Concept
the	O
similarity	O
between	O
silver	O
and	O
gold	O
is	O
greater	O
or	O
equal	O
than	O
the	O
similarity	O
between	O
any	O
other	O
pair	O
of	O
the	O
leaf	O
concepts	O
.	O
</s>
<s>
Thus	O
,	O
DiShIn	B-General_Concept
does	O
not	O
penalize	O
parallel	O
interpretations	O
as	O
GraSM	B-General_Concept
did	O
.	O
</s>
