Recently, morphological inflection has frequently been cast as a sequenceto-sequence task, mapping the characters of the input word together with the morphological features specifying the target to the characters of the corresponding inflected form (Cotterell et al., 2018).
closely is early stopping: a separate development or validation set is used to end training as soon as the loss on the development set L D (θ) starts increasing or model performance on the development set D starts decreasing.