The dependency relations describing relations between opinion words and targets include mod, pnmod, subj, s, obj, obj2 and desc; and the relations for opinion words and targets themselves contain only the conjunction relation conj.
we formulate OT-Rel, OO-Rel, or TT-Rel as a quadruple POS(w i ), DT, R, POS(w j ) , in which POS(w i ) is the POS tag of word w i , DT is the dependency type (i.e., DD or IDD), and R is the syntactic relation.