Alignment-Based Neural Machine Translation. - Tamer Alkhouli; Gabriel Bretschner; Jan-Thorsten Peter; Mohammed Hethnawi; Andreas Guta; Hermann Ney (WMT, 2016)

On The Alignment Problem In Multi-Head Attention-Based Neural Machine Translation. - Tamer Alkhouli; Gabriel Bretschner; Hermann Ney (WMT, 2018)