The invention discloses a training method, a training device, a dialogue method and a dialogue
system of a dialogue model. The training method comprises the steps of
total error constructing, whereina
total error function comprising a first error of a
natural language understanding model and a second error of a strategy generating model are constructed simultaneously; joint training, wherein withthe target of reducing the
total error function, a corpus sample is utilized to jointly
train the
natural language understanding model and the strategy generating model, input of the natural languageunderstanding model is dialogue sentences, output of the
natural language understanding model is internal representation obtained by analyzing the dialogue sentences, input of the strategy generatingmodel at least comprises the output of the
natural language understanding model, and output of the strategy generating model is motions aiming at the dialogue
sentence. Compared with the prior art, when an error occurs on the
natural language understanding model or the strategy generating model, the
system can normally conduct dialogues, and the error transferring problem in a traditional methodcaused when the
natural language understanding model and a
dialogue management model are modeled respectively is solved.