Following <cite>Reddy et al. (2011)</cite> , when using the UNI operation, we experiment with weighting the contributions of each constituent to the composed APT representation using the parameter, h. For example, if A 2 is the APT associated with the head of the phrase and A δ 1 is the properly aligned APT associated with the modifier where δ is the dependency path from the head to the modifier (e.g. NMOD or AMOD), the composition operations can be defined as: