Also note the difference of our unary bucket features from the binary bucket features of <cite>Bansal et al. (2014)</cite> , <cite>who</cite> had to work with pairwise, conjoined features of the head and the argument. Hence, <cite>they</cite> used features on conjunctions of the two bucket values from the head and argument word vectors, firing one pairwise feature per dimension, because firing features on all dimension pairs (corresponding to an outer product) led to an infeasible number of features. The result discussion of these feature differences in presented in §3.2.