Most recently, Conneau et al. [3] have proposed an adversarial learning-based model in order to automatically, in a fully unsupervised fashion, create word translation pairs that can then be used to learn the same projection functions f S and f T as in the model of Smith et al. <cite>[19]</cite> . Let X be the set of all monolingual word embeddings from the source language, and Y the set of all target language embeddings.