However, we do not use the whole formula.
, we use a similar formula that is specified as follows: Acu_Sim(w, c) = Sim(w, c) + Sim(w, c') in which, w is the phrase that needs to be annotated, c is the candidate concept and c' is the concept that is related to c. At the current node c while traversing, the similarity values between t and all children of c are calculated.