AnEMApproachtoNon-autoregressiveConditionalSequenceGenerationZhiqingSun1YimingYang1Abstractconditionalprobabilityofygivenxisfactorizedas:Autoregressive(AR)modelshavebeenthedomi-Tnatingapproachtoconditionalsequencegenera-tion,butaresufferingfromtheissueofhighinfer-pAR(yx)=p(yix,y1,y2,...,yi−1).(1)encelatency.Non-autoregressive(NAR)modelshavebeenrecentlyproposedtoreducethelatencyi=1bygeneratinga...