# Table 2 Direct information and essential information for each method

Method Direct information Essential information Explanation
Resnik IC(LCA(t 1,t 2)) IC(t), tT(t 1), IC(t), tT(t 2) The IC values of t, t T(t 1)
The IC values of t, t T(t 2)
Lin IC(t 1), IC(t 2), IC(LCA(t 1,t 2))
Jiang IC(t 1), IC(t 2), IC(LCA(t 1,t 2))
Pekar Dep (LCA (t 1, t 2)), Dep(t 1), Dep(t 2) Depth (t), t T(t 1)
Depth (t), t T(t 2)
The depth of t, t T(t 1)
The depth of t, t T(t 2)
Wang ∑(S t1(t) + S t2(t)), tT t1 ∩ T t2
SV(t 1), SV(t 2)
$$\begin{array}{l}{S}_{t_1}(t),t\in T\left({t}_1\right)\\ {}{S}_{t_2}(t),t\in T\left({t}_2\right)\end{array}$$ The S-values of t, t T(t 1)
The S-values of t, t T(t 2)
simUI |A(g i ) ∩ A(g j )|, |A(g i ) A(g j )| A(g i ), A(g 2)
simGIC $$\begin{array}{l}{\displaystyle \sum IC(t),t}\in A\left({g}_i\right)\cap A\left({g}_j\right)\\ {}{\displaystyle \sum IC(t),t}\in A\left({g}_i\right)\cup A\left({g}_j\right)\end{array}$$ $$\begin{array}{l}IC\left({t}_1\right),{t}_1\in A\left({g}_i\right)\\ {}IC\left({t}_2\right),{t}_2\in A\left({g}_j\right)\end{array}$$ The IC values of t, t A(g i )
The IC values of t, t A(g j )