The training objective is to maximize the joint likelihood for the tasks of paradigm completion and autoencoding: where A is a set of autoencoding examples, e ✓ is the encoder, and D is a labeled training set of tuples of source s, morphological source tag t S , morphological target tag t T , and target w. MED was originally developed for morphological reinflection.
it operates on pairs consisting of a single source and a single target form.