A Closed form Token level Decomposition

The typos do not affect related conclusions. For unsupervised LCG experiments, we use Y elp Reviews (Cho et al., 2018) and WMT News section Please refer to the official website of WMT dataset (Bojar et al., 2017) for more information about For MT experiments, we load the MarianMT from the es-en checkpoint provided by huggingface. All the hyperparameters are tuned on the development set. We simply report the results after the maximum number of training epochs (usually 20). For more implementation details and tricks, please refer to our code.