- The contextual intersection ΠS between
Fa and Fc in the context of the set S is
|{f:f∈S,s∈sym(f)}|
∑ ( 1 - ------------------- )
s∈(sym(Fa)∩sym(Fb)) |S|
- The contextual direct relevance between Fa
and Fc in the context of the set S is
|sym(Fa) ΠS sym(Fc)|
--------------------
|sym(Fa) ∪ sym(Fc)|
- The directed contextual direct relevance from Fa
to Fc in the context of the set S is
|sym(Fa) ΠS sym(Fc)|
--------------------
|sym(Fc)|