Translation model training method, translation method and translation model training device

The embodiment of the invention provides a translation model training method and device and a translation method and device. The model training method comprises the following steps: respectively inputting a source language statement and a noisy source language statement in a parallel bilingual sentence pair into a translation model to obtain a first prediction target language statement and a second prediction target language statement, first prediction probability distribution and second prediction probability distribution of the translation model and/or first feature vectors and second feature vectors output by the hidden layers are obtained respectively; based on the first prediction target language statement and the target language statement in the parallel bilingual sentence pair, the second prediction target language statement and the target language statement corresponding to the noise-added source language statement, the first feature vector and the second feature vector and/or the first prediction probability distribution and the second prediction probability distribution; determining the current training loss of the translation model, and adjusting the parameters of the translation model. According to the embodiment of the invention, the robustness of the translation model can be improved, the training method is simple, and model training is stable.